That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
My brother-in-law's new build (in Ireland) is very comfortably warm with a heat pump alone. I reckon you could mandate all new builds to be built to a standard that included heat pumps for heating. The technology is there.
For existing houses, not so much, but that's why people are developing things like the microwave boiler. Give people a problem to fix and they will come up with multiple solutions. Exciting times.
Electric Waistcoats!
Reminds me of similar attempts for the RAF air gunners on Lancasters etc. in WW2. But they were apt to short-circuit ... as in this instance high above Pforzheim:
" 2230 Hrs: Suddenly, I feel a burning sensation on my right foot and ankle, I quickly switch off the power supply to my electric suit, the pain subsides and I estimate I will be without the warmth of my flying suit for the next five hours. I assured the skipper I can cope, but didn’t tell him my biggest worry was would I be able to play football the following day"
“I love our big induction range – I’d never go back to gas,” declares James Ramsden, food writer and co-proprietor of the Michelin-starred East London restaurant Pidgin.
Ramsden says amateur cooks can create culinary wonders even on a smaller induction hob. “Once you get the hang of them, they’re far easier than cooking on gas or electric.”
Chefs love induction cooking because of the extremely fast heating and precise heat control provided through a high-performance glass-ceramic surface.
Also, induction technology warms the pan and not the surface or surrounding area, so very little heat escapes into the room. Keeping the temperature cool in the restaurant kitchen is a big benefit.
Renowned Australian Chef Neil Perry was one of the first to adopt induction hobs in his award-winning restaurants’ kitchens, Rockpool Bar & Grill, Spice Temple and Rosetta. He talks about induction cooking in a GoodFood article.
My brother-in-law's new build (in Ireland) is very comfortably warm with a heat pump alone. I reckon you could mandate all new builds to be built to a standard that included heat pumps for heating. The technology is there.
My house in France (in Bretagne so not exactly a benign climate) has a Viessmann GSHP which works fine. I can get 70 deg system temperature at zero deg ambient. The 10kw solar array can run it flat out during the day. Retrofitting one in an existing house would be an absolute pain in the dick though. You also need a very well insulated and glazed house to get the best out of them.
Our 1983-build 5,000 sq ft farmhouse is both heated in winter and cooled in summer very largely on 3 heat pumps. Our cast iron wood stove makes up the difference in winter when we often have 4-6 weeks in the -10 to -20C temps, so it is only during the one or two weeks of 38-40C summer weather that we have a big electricity draw for cooling.
As you indicated, key is that it is well insulated and that windows are double-glazed (with heat reflective blinds) and seal very well.
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
What are the current green alternatives to a gas boiler which heats radiators and water for a terraced house in London, say?
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
My brother-in-law's new build (in Ireland) is very comfortably warm with a heat pump alone. I reckon you could mandate all new builds to be built to a standard that included heat pumps for heating. The technology is there.
For existing houses, not so much, but that's why people are developing things like the microwave boiler. Give people a problem to fix and they will come up with multiple solutions. Exciting times.
We have just done one in a large house, the client hates it, they were expecting something like a boiler, its nothing like that, there is so much pipework and equipment and it just provides background heat. The pump uses the heat in the outside air and ground so on a very cold day they will struggle to warm a house. The idea that you could retrofit current three bed semis with heat pumps is a non starter.
We are certainly not recommending them at the moment. They are eye wateringly expensive, usually 5 times the cost of a boiler and do not work anywhere near as well in heating a house.
You shouldn't struggle to heat the house if the air is cold if the pump (and heating system) has been sized correctly... However in my experience this often requires multiple heat pumps or a 3-phase power supply for a large retrofit.
Genuine question as I know little of heat pumps
If a I gather heat pumps extract heat from the outside air to warm the inside of the house then what is the effect of densely packed housing in london say on the outside air temperature when all homes are busy sucking the heat out the air?
Shouldn't really be a problem. At the end of the day you're taking the latent heat out of the air in the same way a fridge takes the latent heat out of your sausages and dumps the heat in your kitchen, and there's a lot of air.
Heat pumps do have requirements in terms of how much empty space you need in front of them. You can't put them on a side wall, facing another building that is close by, for example.
One surprise for many about heat pumps is just how much air they need to push through. It is a *lot* - probably much more than your super Turbo-Kitchen-Extractor for your 6 ring range on full chat, and that usually prevents them going in e.g. a traditional loft.
One important thing for ASHPs is to make your house efficient first, so you only need say half the heat demand to keep it warm. Which means you need a much smaller cheaper heat pump when the difference may pay for part of the other work.
ASHPs can struggle for efficiency as you get below say 5C. But if you have done the fabric work well your house will stay warm for a long time.
I would always aim for a reversible ASHP such that it can be used for coolth in summer. Requires the right kind of heat distribution system inside the house.
Having said that, the London Heat Island effect may help with air temperature.
You can now get single room type heat pumps.
I'm getting ready to have one on my house after my current boiler, and just making sure that I have the stuff in place to swap it when necessary each time I do things. I currently have oversized rads anyway as I run my central heating at 40-45C for greater efficiency.
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
What are the current green alternatives to a gas boiler which heats radiators and water for a terraced house in London, say?
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
My brother-in-law's new build (in Ireland) is very comfortably warm with a heat pump alone. I reckon you could mandate all new builds to be built to a standard that included heat pumps for heating. The technology is there.
For existing houses, not so much, but that's why people are developing things like the microwave boiler. Give people a problem to fix and they will come up with multiple solutions. Exciting times.
We have just done one in a large house, the client hates it, they were expecting something like a boiler, its nothing like that, there is so much pipework and equipment and it just provides background heat. The pump uses the heat in the outside air and ground so on a very cold day they will struggle to warm a house. The idea that you could retrofit current three bed semis with heat pumps is a non starter.
We are certainly not recommending them at the moment. They are eye wateringly expensive, usually 5 times the cost of a boiler and do not work anywhere near as well in heating a house.
You shouldn't struggle to heat the house if the air is cold if the pump (and heating system) has been sized correctly... However in my experience this often requires multiple heat pumps or a 3-phase power supply for a large retrofit.
Genuine question as I know little of heat pumps
If a I gather heat pumps extract heat from the outside air to warm the inside of the house then what is the effect of densely packed housing in london say on the outside air temperature when all homes are busy sucking the heat out the air?
Shouldn't really be a problem. At the end of the day you're taking the latent heat out of the air in the same way a fridge takes the latent heat out of your sausages and dumps the heat in your kitchen, and there's a lot of air.
Heat pumps do have requirements in terms of how much empty space you need in front of them. You can't put them on a side wall, facing another building that is close by, for example.
One surprise for many about heat pumps is just how much air they need to push through. It is a *lot* - probably much more than your super Turbo-Kitchen-Extractor for your 6 ring range on full chat, and that usually prevents them going in e.g. a traditional loft.
One important thing for ASHPs is to make your house efficient first, so you only need say half the heat demand to keep it warm. Which means you need a much smaller cheaper heat pump when the difference may pay for part of the other work.
ASHPs can struggle for efficiency as you get below say 5C. But if you have done the fabric work well your house will stay warm for a long time.
I would always aim for a reversible ASHP such that it can be used for coolth in summer. Requires the right kind of heat distribution system inside the house.
Having said that, the London Heat Island effect may help with air temperature.
You can now get single room type heat pumps.
I'm getting ready to have one on my house after my current boiler, and just making sure that I have the stuff in place to swap it when necessary each time I do things. I currently have oversized rads anyway as I run my central heating at 40-45C for greater efficiency.
My question was more about unanticipated climate effects if everyone uses one.....heat pumps were invented to solve a problem and I doubt anyone at the time sat down and thought out what happens if every house uses one
“I love our big induction range – I’d never go back to gas,” declares James Ramsden, food writer and co-proprietor of the Michelin-starred East London restaurant Pidgin.
Ramsden says amateur cooks can create culinary wonders even on a smaller induction hob. “Once you get the hang of them, they’re far easier than cooking on gas or electric.”
Chefs love induction cooking because of the extremely fast heating and precise heat control provided through a high-performance glass-ceramic surface.
Also, induction technology warms the pan and not the surface or surrounding area, so very little heat escapes into the room. Keeping the temperature cool in the restaurant kitchen is a big benefit.
Renowned Australian Chef Neil Perry was one of the first to adopt induction hobs in his award-winning restaurants’ kitchens, Rockpool Bar & Grill, Spice Temple and Rosetta. He talks about induction cooking in a GoodFood article.
What percentage of restaurant kitchens mainline on induction hobs do you think?
That's probably more related to inertia and cost than it is to do with quality.
That's certainly a factor that's not been covered – induction is extremely expensive to repair (and much more likely to require repairing).
We had a holiday let one summer – a mate dropped a pan or vase from the shelf above onto the cooking surface of Bosch induction hob, cracking the glass (again, glass – WTF?). They had to replace the entire plate – cost us about £400 for the repair IIRC!
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
What are the current green alternatives to a gas boiler which heats radiators and water for a terraced house in London, say?
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
My brother-in-law's new build (in Ireland) is very comfortably warm with a heat pump alone. I reckon you could mandate all new builds to be built to a standard that included heat pumps for heating. The technology is there.
For existing houses, not so much, but that's why people are developing things like the microwave boiler. Give people a problem to fix and they will come up with multiple solutions. Exciting times.
We have just done one in a large house, the client hates it, they were expecting something like a boiler, its nothing like that, there is so much pipework and equipment and it just provides background heat. The pump uses the heat in the outside air and ground so on a very cold day they will struggle to warm a house. The idea that you could retrofit current three bed semis with heat pumps is a non starter.
We are certainly not recommending them at the moment. They are eye wateringly expensive, usually 5 times the cost of a boiler and do not work anywhere near as well in heating a house.
You shouldn't struggle to heat the house if the air is cold if the pump (and heating system) has been sized correctly... However in my experience this often requires multiple heat pumps or a 3-phase power supply for a large retrofit.
Genuine question as I know little of heat pumps
If a I gather heat pumps extract heat from the outside air to warm the inside of the house then what is the effect of densely packed housing in london say on the outside air temperature when all homes are busy sucking the heat out the air?
Shouldn't really be a problem. At the end of the day you're taking the latent heat out of the air in the same way a fridge takes the latent heat out of your sausages and dumps the heat in your kitchen, and there's a lot of air.
Heat pumps do have requirements in terms of how much empty space you need in front of them. You can't put them on a side wall, facing another building that is close by, for example.
One surprise for many about heat pumps is just how much air they need to push through. It is a *lot* - probably much more than your super Turbo-Kitchen-Extractor for your 6 ring range on full chat, and that usually prevents them going in e.g. a traditional loft.
One important thing for ASHPs is to make your house efficient first, so you only need say half the heat demand to keep it warm. Which means you need a much smaller cheaper heat pump when the difference may pay for part of the other work.
ASHPs can struggle for efficiency as you get below say 5C. But if you have done the fabric work well your house will stay warm for a long time.
I would always aim for a reversible ASHP such that it can be used for coolth in summer. Requires the right kind of heat distribution system inside the house.
Having said that, the London Heat Island effect may help with air temperature.
You can now get single room type heat pumps.
I'm getting ready to have one on my house after my current boiler, and just making sure that I have the stuff in place to swap it when necessary each time I do things. I currently have oversized rads anyway as I run my central heating at 40-45C for greater efficiency.
My question was more about unanticipated climate effects if everyone uses one.....heat pumps were invented to solve a problem and I doubt anyone at the time sat down and thought out what happens if every house uses one
The answer is that the second law of thermodynamics wins in the end: the net result is it all gets a bit hotter.
Strange lack of attention for what I believe is the first British world champion in the 4 belt era, perhaps he was waving the wrong flag after the match. A world title fight on the castle esplanade would be cool tho’.
Yes. The BBC ignored it so comprehsively that they only posted highlights at the top of the Boxing page
And that notorious SNP mouthpiece, the Daily Mail, calling "the immortal Scot" having one of the "finest wins ever" was a clear slur on the good name of your country
The classic 'no one is talking about X because of political thing Y, oh wait, they are talking about it' backfire. Happens every time, though usually in the other direction.
It's like pointing out someone's spelling or grammar errors, invariably you miss your own in doing so.
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
What are the current green alternatives to a gas boiler which heats radiators and water for a terraced house in London, say?
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
My brother-in-law's new build (in Ireland) is very comfortably warm with a heat pump alone. I reckon you could mandate all new builds to be built to a standard that included heat pumps for heating. The technology is there.
For existing houses, not so much, but that's why people are developing things like the microwave boiler. Give people a problem to fix and they will come up with multiple solutions. Exciting times.
We have just done one in a large house, the client hates it, they were expecting something like a boiler, its nothing like that, there is so much pipework and equipment and it just provides background heat. The pump uses the heat in the outside air and ground so on a very cold day they will struggle to warm a house. The idea that you could retrofit current three bed semis with heat pumps is a non starter.
We are certainly not recommending them at the moment. They are eye wateringly expensive, usually 5 times the cost of a boiler and do not work anywhere near as well in heating a house.
You shouldn't struggle to heat the house if the air is cold if the pump (and heating system) has been sized correctly... However in my experience this often requires multiple heat pumps or a 3-phase power supply for a large retrofit.
Genuine question as I know little of heat pumps
If a I gather heat pumps extract heat from the outside air to warm the inside of the house then what is the effect of densely packed housing in london say on the outside air temperature when all homes are busy sucking the heat out the air?
Shouldn't really be a problem. At the end of the day you're taking the latent heat out of the air in the same way a fridge takes the latent heat out of your sausages and dumps the heat in your kitchen, and there's a lot of air.
Heat pumps do have requirements in terms of how much empty space you need in front of them. You can't put them on a side wall, facing another building that is close by, for example.
One surprise for many about heat pumps is just how much air they need to push through. It is a *lot* - probably much more than your super Turbo-Kitchen-Extractor for your 6 ring range on full chat, and that usually prevents them going in e.g. a traditional loft.
One important thing for ASHPs is to make your house efficient first, so you only need say half the heat demand to keep it warm. Which means you need a much smaller cheaper heat pump when the difference may pay for part of the other work.
ASHPs can struggle for efficiency as you get below say 5C. But if you have done the fabric work well your house will stay warm for a long time.
I would always aim for a reversible ASHP such that it can be used for coolth in summer. Requires the right kind of heat distribution system inside the house.
Having said that, the London Heat Island effect may help with air temperature.
You can now get single room type heat pumps.
I'm getting ready to have one on my house after my current boiler, and just making sure that I have the stuff in place to swap it when necessary each time I do things. I currently have oversized rads anyway as I run my central heating at 40-45C for greater efficiency.
My question was more about unanticipated climate effects if everyone uses one.....heat pumps were invented to solve a problem and I doubt anyone at the time sat down and thought out what happens if every house uses one
I'm a bit concerned about noise. has anybody any direct experience?
Strange lack of attention for what I believe is the first British world champion in the 4 belt era, perhaps he was waving the wrong flag after the match. A world title fight on the castle esplanade would be cool tho’.
Yes. The BBC ignored it so comprehsively that they only posted highlights at the top of the Boxing page
And that notorious SNP mouthpiece, the Daily Mail, calling "the immortal Scot" having one of the "finest wins ever" was a clear slur on the good name of your country
I knew I could rely on you. At least I got you off your ass for an I assume enjoyable 50 minutes of trawling Google so you can be right on the internet, I hope you're suitably grateful.
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
What are the current green alternatives to a gas boiler which heats radiators and water for a terraced house in London, say?
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
My brother-in-law's new build (in Ireland) is very comfortably warm with a heat pump alone. I reckon you could mandate all new builds to be built to a standard that included heat pumps for heating. The technology is there.
For existing houses, not so much, but that's why people are developing things like the microwave boiler. Give people a problem to fix and they will come up with multiple solutions. Exciting times.
We have just done one in a large house, the client hates it, they were expecting something like a boiler, its nothing like that, there is so much pipework and equipment and it just provides background heat. The pump uses the heat in the outside air and ground so on a very cold day they will struggle to warm a house. The idea that you could retrofit current three bed semis with heat pumps is a non starter.
We are certainly not recommending them at the moment. They are eye wateringly expensive, usually 5 times the cost of a boiler and do not work anywhere near as well in heating a house.
You shouldn't struggle to heat the house if the air is cold if the pump (and heating system) has been sized correctly... However in my experience this often requires multiple heat pumps or a 3-phase power supply for a large retrofit.
Genuine question as I know little of heat pumps
If a I gather heat pumps extract heat from the outside air to warm the inside of the house then what is the effect of densely packed housing in london say on the outside air temperature when all homes are busy sucking the heat out the air?
Shouldn't really be a problem. At the end of the day you're taking the latent heat out of the air in the same way a fridge takes the latent heat out of your sausages and dumps the heat in your kitchen, and there's a lot of air.
Heat pumps do have requirements in terms of how much empty space you need in front of them. You can't put them on a side wall, facing another building that is close by, for example.
One surprise for many about heat pumps is just how much air they need to push through. It is a *lot* - probably much more than your super Turbo-Kitchen-Extractor for your 6 ring range on full chat, and that usually prevents them going in e.g. a traditional loft.
One important thing for ASHPs is to make your house efficient first, so you only need say half the heat demand to keep it warm. Which means you need a much smaller cheaper heat pump when the difference may pay for part of the other work.
ASHPs can struggle for efficiency as you get below say 5C. But if you have done the fabric work well your house will stay warm for a long time.
I would always aim for a reversible ASHP such that it can be used for coolth in summer. Requires the right kind of heat distribution system inside the house.
Having said that, the London Heat Island effect may help with air temperature.
You can now get single room type heat pumps.
I'm getting ready to have one on my house after my current boiler, and just making sure that I have the stuff in place to swap it when necessary each time I do things. I currently have oversized rads anyway as I run my central heating at 40-45C for greater efficiency.
My question was more about unanticipated climate effects if everyone uses one.....heat pumps were invented to solve a problem and I doubt anyone at the time sat down and thought out what happens if every house uses one
I can't imagine it would have much if any climate change effect. The amount of air outside, versus inside, is such as to likely dwarf any impact.
Locally it might reduce the heat island effect of cities making cities marginally colder. From the twin effects of dumping cold air outside and from the effect of not heating the air inside in the first place.
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
What are the current green alternatives to a gas boiler which heats radiators and water for a terraced house in London, say?
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
My brother-in-law's new build (in Ireland) is very comfortably warm with a heat pump alone. I reckon you could mandate all new builds to be built to a standard that included heat pumps for heating. The technology is there.
For existing houses, not so much, but that's why people are developing things like the microwave boiler. Give people a problem to fix and they will come up with multiple solutions. Exciting times.
We have just done one in a large house, the client hates it, they were expecting something like a boiler, its nothing like that, there is so much pipework and equipment and it just provides background heat. The pump uses the heat in the outside air and ground so on a very cold day they will struggle to warm a house. The idea that you could retrofit current three bed semis with heat pumps is a non starter.
We are certainly not recommending them at the moment. They are eye wateringly expensive, usually 5 times the cost of a boiler and do not work anywhere near as well in heating a house.
You shouldn't struggle to heat the house if the air is cold if the pump (and heating system) has been sized correctly... However in my experience this often requires multiple heat pumps or a 3-phase power supply for a large retrofit.
Genuine question as I know little of heat pumps
If a I gather heat pumps extract heat from the outside air to warm the inside of the house then what is the effect of densely packed housing in london say on the outside air temperature when all homes are busy sucking the heat out the air?
Shouldn't really be a problem. At the end of the day you're taking the latent heat out of the air in the same way a fridge takes the latent heat out of your sausages and dumps the heat in your kitchen, and there's a lot of air.
Heat pumps do have requirements in terms of how much empty space you need in front of them. You can't put them on a side wall, facing another building that is close by, for example.
One surprise for many about heat pumps is just how much air they need to push through. It is a *lot* - probably much more than your super Turbo-Kitchen-Extractor for your 6 ring range on full chat, and that usually prevents them going in e.g. a traditional loft.
One important thing for ASHPs is to make your house efficient first, so you only need say half the heat demand to keep it warm. Which means you need a much smaller cheaper heat pump when the difference may pay for part of the other work.
ASHPs can struggle for efficiency as you get below say 5C. But if you have done the fabric work well your house will stay warm for a long time.
I would always aim for a reversible ASHP such that it can be used for coolth in summer. Requires the right kind of heat distribution system inside the house.
Having said that, the London Heat Island effect may help with air temperature.
You can now get single room type heat pumps.
I'm getting ready to have one on my house after my current boiler, and just making sure that I have the stuff in place to swap it when necessary each time I do things. I currently have oversized rads anyway as I run my central heating at 40-45C for greater efficiency.
My question was more about unanticipated climate effects if everyone uses one.....heat pumps were invented to solve a problem and I doubt anyone at the time sat down and thought out what happens if every house uses one
I can't imagine it would have much if any climate change effect. The amount of air outside, versus inside, is such as to likely dwarf any impact.
Locally it might reduce the heat island effect of cities making cities marginally colder. From the twin effects of dumping cold air outside and from the effect of not heating the air inside in the first place.
Yup - the climate change issue is the CO2 forming a better "trap" for heat.
Directly emitting more heat will make no difference for ludicrous increases - orders of magnitude over current levels.
My brother-in-law's new build (in Ireland) is very comfortably warm with a heat pump alone. I reckon you could mandate all new builds to be built to a standard that included heat pumps for heating. The technology is there.
My house in France (in Bretagne so not exactly a benign climate) has a Viessmann GSHP which works fine. I can get 70 deg system temperature at zero deg ambient. The 10kw solar array can run it flat out during the day. Retrofitting one in an existing house would be an absolute pain in the dick though. You also need a very well insulated and glazed house to get the best out of them.
Our 1983-build 5,000 sq ft farmhouse is both heated in winter and cooled in summer very largely on 3 heat pumps. Our cast iron wood stove makes up the difference in winter when we often have 4-6 weeks in the -10 to -20C temps, so it is only during the one or two weeks of 38-40C summer weather that we have a big electricity draw for cooling.
As you indicated, key is that it is well insulated and that windows are double-glazed (with heat reflective blinds) and seal very well.
5,000 square feet? That’s not a farmhouse, it’s a *compound*.
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
What are the current green alternatives to a gas boiler which heats radiators and water for a terraced house in London, say?
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
My brother-in-law's new build (in Ireland) is very comfortably warm with a heat pump alone. I reckon you could mandate all new builds to be built to a standard that included heat pumps for heating. The technology is there.
For existing houses, not so much, but that's why people are developing things like the microwave boiler. Give people a problem to fix and they will come up with multiple solutions. Exciting times.
We have just done one in a large house, the client hates it, they were expecting something like a boiler, its nothing like that, there is so much pipework and equipment and it just provides background heat. The pump uses the heat in the outside air and ground so on a very cold day they will struggle to warm a house. The idea that you could retrofit current three bed semis with heat pumps is a non starter.
We are certainly not recommending them at the moment. They are eye wateringly expensive, usually 5 times the cost of a boiler and do not work anywhere near as well in heating a house.
You shouldn't struggle to heat the house if the air is cold if the pump (and heating system) has been sized correctly... However in my experience this often requires multiple heat pumps or a 3-phase power supply for a large retrofit.
Genuine question as I know little of heat pumps
If a I gather heat pumps extract heat from the outside air to warm the inside of the house then what is the effect of densely packed housing in london say on the outside air temperature when all homes are busy sucking the heat out the air?
Shouldn't really be a problem. At the end of the day you're taking the latent heat out of the air in the same way a fridge takes the latent heat out of your sausages and dumps the heat in your kitchen, and there's a lot of air.
Heat pumps do have requirements in terms of how much empty space you need in front of them. You can't put them on a side wall, facing another building that is close by, for example.
One surprise for many about heat pumps is just how much air they need to push through. It is a *lot* - probably much more than your super Turbo-Kitchen-Extractor for your 6 ring range on full chat, and that usually prevents them going in e.g. a traditional loft.
One important thing for ASHPs is to make your house efficient first, so you only need say half the heat demand to keep it warm. Which means you need a much smaller cheaper heat pump when the difference may pay for part of the other work.
ASHPs can struggle for efficiency as you get below say 5C. But if you have done the fabric work well your house will stay warm for a long time.
I would always aim for a reversible ASHP such that it can be used for coolth in summer. Requires the right kind of heat distribution system inside the house.
Having said that, the London Heat Island effect may help with air temperature.
You can now get single room type heat pumps.
I'm getting ready to have one on my house after my current boiler, and just making sure that I have the stuff in place to swap it when necessary each time I do things. I currently have oversized rads anyway as I run my central heating at 40-45C for greater efficiency.
My question was more about unanticipated climate effects if everyone uses one.....heat pumps were invented to solve a problem and I doubt anyone at the time sat down and thought out what happens if every house uses one
I can't imagine it would have much if any climate change effect. The amount of air outside, versus inside, is such as to likely dwarf any impact.
Locally it might reduce the heat island effect of cities making cities marginally colder. From the twin effects of dumping cold air outside and from the effect of not heating the air inside in the first place.
We as a race have a habit of doing things assuming they wont have any effect on climate as the atmosphere is so huge. Our weather systems are huge complex things and I can well imagine some areas becoming slightly colder could have magnified effects on for example wind patterns, which then will have a knockon effect etc. This is the whole premise of the butterfly effect. Small local changes getting amplified via knock on effects.
Lithuania has decided that all flights to and from Lithuanian airports must avoid the airspace of neighbouring Belarus, the transport minister said on Monday.
Marius Skuodis said the ban would come into effect at 3 a.m. on Tuesday (midnight GMT).
I just changed my 2nd AZ jab from the end of July to end of June. If anyone is waiting for a 2nd jab using the online NHS system you can re-book to bring it forward. You do have to cancel your existing appointment first. Hope it helps someone.
I'm a bit concerned about noise. has anybody any direct experience?
Very loud, when the fan is running
As with most things involving pumps and fans - varies massively.
Some systems I have seen would make William, Froude (https://en.wikipedia.org/wiki/William_Froude) cry bitter tears. His work on propellor shapes carries over into fan design..... And yet people still make fans that are really noise makers that accidentally move air.
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
What are the current green alternatives to a gas boiler which heats radiators and water for a terraced house in London, say?
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
My brother-in-law's new build (in Ireland) is very comfortably warm with a heat pump alone. I reckon you could mandate all new builds to be built to a standard that included heat pumps for heating. The technology is there.
For existing houses, not so much, but that's why people are developing things like the microwave boiler. Give people a problem to fix and they will come up with multiple solutions. Exciting times.
We have just done one in a large house, the client hates it, they were expecting something like a boiler, its nothing like that, there is so much pipework and equipment and it just provides background heat. The pump uses the heat in the outside air and ground so on a very cold day they will struggle to warm a house. The idea that you could retrofit current three bed semis with heat pumps is a non starter.
We are certainly not recommending them at the moment. They are eye wateringly expensive, usually 5 times the cost of a boiler and do not work anywhere near as well in heating a house.
You shouldn't struggle to heat the house if the air is cold if the pump (and heating system) has been sized correctly... However in my experience this often requires multiple heat pumps or a 3-phase power supply for a large retrofit.
Genuine question as I know little of heat pumps
If a I gather heat pumps extract heat from the outside air to warm the inside of the house then what is the effect of densely packed housing in london say on the outside air temperature when all homes are busy sucking the heat out the air?
Shouldn't really be a problem. At the end of the day you're taking the latent heat out of the air in the same way a fridge takes the latent heat out of your sausages and dumps the heat in your kitchen, and there's a lot of air.
Heat pumps do have requirements in terms of how much empty space you need in front of them. You can't put them on a side wall, facing another building that is close by, for example.
One surprise for many about heat pumps is just how much air they need to push through. It is a *lot* - probably much more than your super Turbo-Kitchen-Extractor for your 6 ring range on full chat, and that usually prevents them going in e.g. a traditional loft.
One important thing for ASHPs is to make your house efficient first, so you only need say half the heat demand to keep it warm. Which means you need a much smaller cheaper heat pump when the difference may pay for part of the other work.
ASHPs can struggle for efficiency as you get below say 5C. But if you have done the fabric work well your house will stay warm for a long time.
I would always aim for a reversible ASHP such that it can be used for coolth in summer. Requires the right kind of heat distribution system inside the house.
Having said that, the London Heat Island effect may help with air temperature.
You can now get single room type heat pumps.
I'm getting ready to have one on my house after my current boiler, and just making sure that I have the stuff in place to swap it when necessary each time I do things. I currently have oversized rads anyway as I run my central heating at 40-45C for greater efficiency.
My question was more about unanticipated climate effects if everyone uses one.....heat pumps were invented to solve a problem and I doubt anyone at the time sat down and thought out what happens if every house uses one
You might have an urban heat sink effect, a reverse of the current heat island effect caused (in winter) by people's leaky homes heating the city at large.
The effect would be large enough to be measurable, but not large enough to cause any issues.
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
What are the current green alternatives to a gas boiler which heats radiators and water for a terraced house in London, say?
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
My brother-in-law's new build (in Ireland) is very comfortably warm with a heat pump alone. I reckon you could mandate all new builds to be built to a standard that included heat pumps for heating. The technology is there.
For existing houses, not so much, but that's why people are developing things like the microwave boiler. Give people a problem to fix and they will come up with multiple solutions. Exciting times.
We have just done one in a large house, the client hates it, they were expecting something like a boiler, its nothing like that, there is so much pipework and equipment and it just provides background heat. The pump uses the heat in the outside air and ground so on a very cold day they will struggle to warm a house. The idea that you could retrofit current three bed semis with heat pumps is a non starter.
We are certainly not recommending them at the moment. They are eye wateringly expensive, usually 5 times the cost of a boiler and do not work anywhere near as well in heating a house.
You shouldn't struggle to heat the house if the air is cold if the pump (and heating system) has been sized correctly... However in my experience this often requires multiple heat pumps or a 3-phase power supply for a large retrofit.
Genuine question as I know little of heat pumps
If a I gather heat pumps extract heat from the outside air to warm the inside of the house then what is the effect of densely packed housing in london say on the outside air temperature when all homes are busy sucking the heat out the air?
Shouldn't really be a problem. At the end of the day you're taking the latent heat out of the air in the same way a fridge takes the latent heat out of your sausages and dumps the heat in your kitchen, and there's a lot of air.
Heat pumps do have requirements in terms of how much empty space you need in front of them. You can't put them on a side wall, facing another building that is close by, for example.
One surprise for many about heat pumps is just how much air they need to push through. It is a *lot* - probably much more than your super Turbo-Kitchen-Extractor for your 6 ring range on full chat, and that usually prevents them going in e.g. a traditional loft.
One important thing for ASHPs is to make your house efficient first, so you only need say half the heat demand to keep it warm. Which means you need a much smaller cheaper heat pump when the difference may pay for part of the other work.
ASHPs can struggle for efficiency as you get below say 5C. But if you have done the fabric work well your house will stay warm for a long time.
I would always aim for a reversible ASHP such that it can be used for coolth in summer. Requires the right kind of heat distribution system inside the house.
Having said that, the London Heat Island effect may help with air temperature.
You can now get single room type heat pumps.
I'm getting ready to have one on my house after my current boiler, and just making sure that I have the stuff in place to swap it when necessary each time I do things. I currently have oversized rads anyway as I run my central heating at 40-45C for greater efficiency.
My question was more about unanticipated climate effects if everyone uses one.....heat pumps were invented to solve a problem and I doubt anyone at the time sat down and thought out what happens if every house uses one
I can't imagine it would have much if any climate change effect. The amount of air outside, versus inside, is such as to likely dwarf any impact.
Locally it might reduce the heat island effect of cities making cities marginally colder. From the twin effects of dumping cold air outside and from the effect of not heating the air inside in the first place.
We as a race have a habit of doing things assuming they wont have any effect on climate as the atmosphere is so huge. Our weather systems are huge complex things and I can well imagine some areas becoming slightly colder could have magnified effects on for example wind patterns, which then will have a knockon effect etc. This is the whole premise of the butterfly effect. Small local changes getting amplified via knock on effects.
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
What are the current green alternatives to a gas boiler which heats radiators and water for a terraced house in London, say?
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
My brother-in-law's new build (in Ireland) is very comfortably warm with a heat pump alone. I reckon you could mandate all new builds to be built to a standard that included heat pumps for heating. The technology is there.
For existing houses, not so much, but that's why people are developing things like the microwave boiler. Give people a problem to fix and they will come up with multiple solutions. Exciting times.
We have just done one in a large house, the client hates it, they were expecting something like a boiler, its nothing like that, there is so much pipework and equipment and it just provides background heat. The pump uses the heat in the outside air and ground so on a very cold day they will struggle to warm a house. The idea that you could retrofit current three bed semis with heat pumps is a non starter.
We are certainly not recommending them at the moment. They are eye wateringly expensive, usually 5 times the cost of a boiler and do not work anywhere near as well in heating a house.
You shouldn't struggle to heat the house if the air is cold if the pump (and heating system) has been sized correctly... However in my experience this often requires multiple heat pumps or a 3-phase power supply for a large retrofit.
Genuine question as I know little of heat pumps
If a I gather heat pumps extract heat from the outside air to warm the inside of the house then what is the effect of densely packed housing in london say on the outside air temperature when all homes are busy sucking the heat out the air?
Shouldn't really be a problem. At the end of the day you're taking the latent heat out of the air in the same way a fridge takes the latent heat out of your sausages and dumps the heat in your kitchen, and there's a lot of air.
Heat pumps do have requirements in terms of how much empty space you need in front of them. You can't put them on a side wall, facing another building that is close by, for example.
One surprise for many about heat pumps is just how much air they need to push through. It is a *lot* - probably much more than your super Turbo-Kitchen-Extractor for your 6 ring range on full chat, and that usually prevents them going in e.g. a traditional loft.
One important thing for ASHPs is to make your house efficient first, so you only need say half the heat demand to keep it warm. Which means you need a much smaller cheaper heat pump when the difference may pay for part of the other work.
ASHPs can struggle for efficiency as you get below say 5C. But if you have done the fabric work well your house will stay warm for a long time.
I would always aim for a reversible ASHP such that it can be used for coolth in summer. Requires the right kind of heat distribution system inside the house.
Having said that, the London Heat Island effect may help with air temperature.
You can now get single room type heat pumps.
I'm getting ready to have one on my house after my current boiler, and just making sure that I have the stuff in place to swap it when necessary each time I do things. I currently have oversized rads anyway as I run my central heating at 40-45C for greater efficiency.
My question was more about unanticipated climate effects if everyone uses one.....heat pumps were invented to solve a problem and I doubt anyone at the time sat down and thought out what happens if every house uses one
I can't imagine it would have much if any climate change effect. The amount of air outside, versus inside, is such as to likely dwarf any impact.
Locally it might reduce the heat island effect of cities making cities marginally colder. From the twin effects of dumping cold air outside and from the effect of not heating the air inside in the first place.
We as a race have a habit of doing things assuming they wont have any effect on climate as the atmosphere is so huge. Our weather systems are huge complex things and I can well imagine some areas becoming slightly colder could have magnified effects on for example wind patterns, which then will have a knockon effect etc. This is the whole premise of the butterfly effect. Small local changes getting amplified via knock on effects.
The mathematics tell us that it is fart-in-a-thunderstorm territory.
The curious thing about the polls in recent months is how rapidly they have swung one way and then another. My theory is that's related to the marmite nature of the PM. It's impossible to be neutral on him.
That means that if everything is going well, he is triumphant, but also that his support melts away like the snow in... erm... late May when things go badly.
So to bet on the next election is mostly to bet on where we are in the love-hate cycle in a few years time. And whilst regaining control of the election date will help him a lot there, it's not foolproof.
And there is still the Max Hastings theory- everyone who has dealings with the Bozza regrets it in the end. It's just that some people haven't regretted it yet. Eventually the gap between his ability to tell stories and to deliver on them gets too big to ignore. (See fishermen, unionists, farmers...)
When everything was going badly for Boris it was neck and neck. Now everything’s going well, he is streets ahead, that’s why I think the Cons are a good bet at EVS for a majority
And that's the thing. At neck-and-neck, the Conservatives are out. (From memory, the breakpoint is Cons +2 and they are relying on the DUP... good luck with that!) It depends a lot on how efficiently the opposition votes are distributed. So to bet on how the next GE goes is to bet on how well Johnson's government governs. If he screws up, the public look like they are willing to, somewhat grumpily, line up behind the alternative.
Exactly. His detractors - many of whom have literally no grasp of political strategy - set the bar so low by calling him all the worst things under the sun that the reality can't help but exceed expectations. So as he becomes more popular they sit in stunned perplexity, learn nothing from their mistakes, and double down on the petty smears because they worked so well last time...
Nah it's not that. He is a liar unfit for office. Nothing has changed, no bars have been set, no expectations have been met, exceeded or fallen short.
The issue is that people like you like support him regardless of such failings which you don't think are failings at all. You think they are strengths and indeed they are electoral strengths.
And that's fine. It's called democracy. Just as people supported Jeremy Corbyn and thought that his value system was one they wanted to see exhibited by a Prime Minister, by Prime Minister Corbyn.
Doesn't mean that I think Jeremy Corbyn or Boris Johnson are appropriate people to be Prime Minister.
An even bigger liar than Boris won three consecutive General Elections though, didn't he?
Given the success of Boris and "Bliar" I doubt there's going to be much incentive for honest politicians going forwards.
Yes I never voted for TB. And I agree there's no incentive for honest politicians.
I think it's a shame. Others celebrate it as it's "their" liar currently in power.
It is a sad state of affairs that there are a significant number of people that think having a demonstrably dishonest person for their leader is OK providing they win elections. I loathed Blair, but I think he was honest compared to Johnson. Blair was a dissembler and a purveyor of half truths, which is not uncommon among politicians. Personally I think it unnecessary in any walk of life. Johnson has gulled some people (indeed quite a lot) into believing lying is perfectly acceptable, because that is the way he has always lived his life, and to him it is as normal as cleaning his teeth. The country will eventually pay a price for it, if it hasn't already.
The difference between not telling the whole truth (which politicians have done forever) and outright lying is a subtle one- the sort of thing that ought to cause one's conscience to chafe. But difference there definitely is, and one of the worst things that Johnson has done is to elevate the idea that, because nobody is totally truthful, it's OK for him to spout bilge whenever it's convenient.
One of them means that, with effort and asking the right questions, truth can be established. The other means that there is no way of knowing which way is up and which is down. If you are prepared to just make stuff up, and do a runner when the lies get exposed, you're playing life on easy mode. It's frankly boorish.
Well let’s bet! All I’m saying is that makes Con Maj a great bet at EVS. I’ll have as much as you want to lay at EVS that Con win a majority at the next election.
UPDATE: Ryanair has now amended its statement on the abduction of the Belarus journalist from its plane in Minsk. "Nothing untoward" has been changed to "an act of aviation piracy. https://twitter.com/LizSly/status/1396803200578199560?s=20
I'm a bit concerned about noise. has anybody any direct experience?
Very loud, when the fan is running
As with most things involving pumps and fans - varies massively.
Some systems I have seen would make William, Froude (https://en.wikipedia.org/wiki/William_Froude) cry bitter tears. His work on propellor shapes carries over into fan design..... And yet people still make fans that are really noise makers that accidentally move air.
Yep, because the propellers on ships (and later planes) have to be as efficient as possible, with massive performance gains and fuel savings for getting the shape right in those use cases.
Most companies today (who aren’t building ships or planes) probably just buy standard 13A electric fans off the shelf, without a lot of consideration into the nuances of performance, efficiency and noise.
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
What are the current green alternatives to a gas boiler which heats radiators and water for a terraced house in London, say?
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
My brother-in-law's new build (in Ireland) is very comfortably warm with a heat pump alone. I reckon you could mandate all new builds to be built to a standard that included heat pumps for heating. The technology is there.
For existing houses, not so much, but that's why people are developing things like the microwave boiler. Give people a problem to fix and they will come up with multiple solutions. Exciting times.
We have just done one in a large house, the client hates it, they were expecting something like a boiler, its nothing like that, there is so much pipework and equipment and it just provides background heat. The pump uses the heat in the outside air and ground so on a very cold day they will struggle to warm a house. The idea that you could retrofit current three bed semis with heat pumps is a non starter.
We are certainly not recommending them at the moment. They are eye wateringly expensive, usually 5 times the cost of a boiler and do not work anywhere near as well in heating a house.
You shouldn't struggle to heat the house if the air is cold if the pump (and heating system) has been sized correctly... However in my experience this often requires multiple heat pumps or a 3-phase power supply for a large retrofit.
Genuine question as I know little of heat pumps
If a I gather heat pumps extract heat from the outside air to warm the inside of the house then what is the effect of densely packed housing in london say on the outside air temperature when all homes are busy sucking the heat out the air?
Shouldn't really be a problem. At the end of the day you're taking the latent heat out of the air in the same way a fridge takes the latent heat out of your sausages and dumps the heat in your kitchen, and there's a lot of air.
Heat pumps do have requirements in terms of how much empty space you need in front of them. You can't put them on a side wall, facing another building that is close by, for example.
One surprise for many about heat pumps is just how much air they need to push through. It is a *lot* - probably much more than your super Turbo-Kitchen-Extractor for your 6 ring range on full chat, and that usually prevents them going in e.g. a traditional loft.
One important thing for ASHPs is to make your house efficient first, so you only need say half the heat demand to keep it warm. Which means you need a much smaller cheaper heat pump when the difference may pay for part of the other work.
ASHPs can struggle for efficiency as you get below say 5C. But if you have done the fabric work well your house will stay warm for a long time.
I would always aim for a reversible ASHP such that it can be used for coolth in summer. Requires the right kind of heat distribution system inside the house.
Having said that, the London Heat Island effect may help with air temperature.
You can now get single room type heat pumps.
I'm getting ready to have one on my house after my current boiler, and just making sure that I have the stuff in place to swap it when necessary each time I do things. I currently have oversized rads anyway as I run my central heating at 40-45C for greater efficiency.
My question was more about unanticipated climate effects if everyone uses one.....heat pumps were invented to solve a problem and I doubt anyone at the time sat down and thought out what happens if every house uses one
I can't imagine it would have much if any climate change effect. The amount of air outside, versus inside, is such as to likely dwarf any impact.
Locally it might reduce the heat island effect of cities making cities marginally colder. From the twin effects of dumping cold air outside and from the effect of not heating the air inside in the first place.
Yup - the climate change issue is the CO2 forming a better "trap" for heat.
Directly emitting more heat will make no difference for ludicrous increases - orders of magnitude over current levels.
I once calculated the direct heating effect on the atmosphere from waste heat as about 0.02C when averaged globally. At 1% of the radiative effect from doubling CO2 it was a lot larger than I expected.
Removing that heating from winter cities would be measurable. You'd expect people to have more garden frosts, for example.
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
What are the current green alternatives to a gas boiler which heats radiators and water for a terraced house in London, say?
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
My brother-in-law's new build (in Ireland) is very comfortably warm with a heat pump alone. I reckon you could mandate all new builds to be built to a standard that included heat pumps for heating. The technology is there.
For existing houses, not so much, but that's why people are developing things like the microwave boiler. Give people a problem to fix and they will come up with multiple solutions. Exciting times.
We have just done one in a large house, the client hates it, they were expecting something like a boiler, its nothing like that, there is so much pipework and equipment and it just provides background heat. The pump uses the heat in the outside air and ground so on a very cold day they will struggle to warm a house. The idea that you could retrofit current three bed semis with heat pumps is a non starter.
We are certainly not recommending them at the moment. They are eye wateringly expensive, usually 5 times the cost of a boiler and do not work anywhere near as well in heating a house.
You shouldn't struggle to heat the house if the air is cold if the pump (and heating system) has been sized correctly... However in my experience this often requires multiple heat pumps or a 3-phase power supply for a large retrofit.
Genuine question as I know little of heat pumps
If a I gather heat pumps extract heat from the outside air to warm the inside of the house then what is the effect of densely packed housing in london say on the outside air temperature when all homes are busy sucking the heat out the air?
Shouldn't really be a problem. At the end of the day you're taking the latent heat out of the air in the same way a fridge takes the latent heat out of your sausages and dumps the heat in your kitchen, and there's a lot of air.
Heat pumps do have requirements in terms of how much empty space you need in front of them. You can't put them on a side wall, facing another building that is close by, for example.
One surprise for many about heat pumps is just how much air they need to push through. It is a *lot* - probably much more than your super Turbo-Kitchen-Extractor for your 6 ring range on full chat, and that usually prevents them going in e.g. a traditional loft.
One important thing for ASHPs is to make your house efficient first, so you only need say half the heat demand to keep it warm. Which means you need a much smaller cheaper heat pump when the difference may pay for part of the other work.
ASHPs can struggle for efficiency as you get below say 5C. But if you have done the fabric work well your house will stay warm for a long time.
I would always aim for a reversible ASHP such that it can be used for coolth in summer. Requires the right kind of heat distribution system inside the house.
Having said that, the London Heat Island effect may help with air temperature.
You can now get single room type heat pumps.
I'm getting ready to have one on my house after my current boiler, and just making sure that I have the stuff in place to swap it when necessary each time I do things. I currently have oversized rads anyway as I run my central heating at 40-45C for greater efficiency.
My question was more about unanticipated climate effects if everyone uses one.....heat pumps were invented to solve a problem and I doubt anyone at the time sat down and thought out what happens if every house uses one
You might have an urban heat sink effect, a reverse of the current heat island effect caused (in winter) by people's leaky homes heating the city at large.
The effect would be large enough to be measurable, but not large enough to cause any issues.
You are just recycling heat. Most from the vicinity of the house, plus some from the vicinity of a wind turbine.
If the house wasn't leaking it back out again, it would get intolerably hot after a while.
The one thing you are definitely not doing is cooling the atmosphere, at least in the long run.
A Black Lives Matter activist shot in the head when gang members opened fire on partygoers was "caught in the firing line", a friend says.
It is not believed Oxford graduate Sasha Johnson, 27, was the "intended victim" of the drive-by shooting, which left her in a critical condition in hospital, said friend and fellow activist Imarn Ayton.
It is thought a "dispute" between rival gangs led to the shooting as the mum-of-three and others gathered in a garden in Peckham, south-east London, just before 3am on Sunday.
I'm a bit concerned about noise. has anybody any direct experience?
Very loud, when the fan is running
That would be a show stopper in many situations. I suppose ground source are quieter and could be sound proofed but they require a big garden or deep pile. Capital cost is relatively high. No easy answers except much cheaper electricity and as thing stand there has to be a nuclear programme. One problem we have is top-down selection of technical solutions at an early stage of the process. Suppose hydrogen fuel cells become the best technology for cars? Suppose we can produce electricity more cheaply and so can create hydrogen and then package it as synthetic (non-)fossil fuels so cars and domestic heating can continue with updated current technology?
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
What are the current green alternatives to a gas boiler which heats radiators and water for a terraced house in London, say?
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
My brother-in-law's new build (in Ireland) is very comfortably warm with a heat pump alone. I reckon you could mandate all new builds to be built to a standard that included heat pumps for heating. The technology is there.
For existing houses, not so much, but that's why people are developing things like the microwave boiler. Give people a problem to fix and they will come up with multiple solutions. Exciting times.
We have just done one in a large house, the client hates it, they were expecting something like a boiler, its nothing like that, there is so much pipework and equipment and it just provides background heat. The pump uses the heat in the outside air and ground so on a very cold day they will struggle to warm a house. The idea that you could retrofit current three bed semis with heat pumps is a non starter.
We are certainly not recommending them at the moment. They are eye wateringly expensive, usually 5 times the cost of a boiler and do not work anywhere near as well in heating a house.
You shouldn't struggle to heat the house if the air is cold if the pump (and heating system) has been sized correctly... However in my experience this often requires multiple heat pumps or a 3-phase power supply for a large retrofit.
Genuine question as I know little of heat pumps
If a I gather heat pumps extract heat from the outside air to warm the inside of the house then what is the effect of densely packed housing in london say on the outside air temperature when all homes are busy sucking the heat out the air?
Shouldn't really be a problem. At the end of the day you're taking the latent heat out of the air in the same way a fridge takes the latent heat out of your sausages and dumps the heat in your kitchen, and there's a lot of air.
Heat pumps do have requirements in terms of how much empty space you need in front of them. You can't put them on a side wall, facing another building that is close by, for example.
One surprise for many about heat pumps is just how much air they need to push through. It is a *lot* - probably much more than your super Turbo-Kitchen-Extractor for your 6 ring range on full chat, and that usually prevents them going in e.g. a traditional loft.
One important thing for ASHPs is to make your house efficient first, so you only need say half the heat demand to keep it warm. Which means you need a much smaller cheaper heat pump when the difference may pay for part of the other work.
ASHPs can struggle for efficiency as you get below say 5C. But if you have done the fabric work well your house will stay warm for a long time.
I would always aim for a reversible ASHP such that it can be used for coolth in summer. Requires the right kind of heat distribution system inside the house.
Having said that, the London Heat Island effect may help with air temperature.
You can now get single room type heat pumps.
I'm getting ready to have one on my house after my current boiler, and just making sure that I have the stuff in place to swap it when necessary each time I do things. I currently have oversized rads anyway as I run my central heating at 40-45C for greater efficiency.
My question was more about unanticipated climate effects if everyone uses one.....heat pumps were invented to solve a problem and I doubt anyone at the time sat down and thought out what happens if every house uses one
You might have an urban heat sink effect, a reverse of the current heat island effect caused (in winter) by people's leaky homes heating the city at large.
The effect would be large enough to be measurable, but not large enough to cause any issues.
You are just recycling heat.
You are only putting in to the house what the house is leaking to the atmosphere, plus whatever you've taken out of the air in the vicinity of the wind turbine.
Otherwise your house is going to get intolerably hot after a while.
The one thing you are definitely not doing is cooling the vicinity.
You're redistributing heat. Obviously you're removing some from outside, though after a while you're only replacing heat that you've since lost - so a steady state. This is a large difference with the status quo.
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
What are the current green alternatives to a gas boiler which heats radiators and water for a terraced house in London, say?
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
My brother-in-law's new build (in Ireland) is very comfortably warm with a heat pump alone. I reckon you could mandate all new builds to be built to a standard that included heat pumps for heating. The technology is there.
For existing houses, not so much, but that's why people are developing things like the microwave boiler. Give people a problem to fix and they will come up with multiple solutions. Exciting times.
We have just done one in a large house, the client hates it, they were expecting something like a boiler, its nothing like that, there is so much pipework and equipment and it just provides background heat. The pump uses the heat in the outside air and ground so on a very cold day they will struggle to warm a house. The idea that you could retrofit current three bed semis with heat pumps is a non starter.
We are certainly not recommending them at the moment. They are eye wateringly expensive, usually 5 times the cost of a boiler and do not work anywhere near as well in heating a house.
You shouldn't struggle to heat the house if the air is cold if the pump (and heating system) has been sized correctly... However in my experience this often requires multiple heat pumps or a 3-phase power supply for a large retrofit.
Genuine question as I know little of heat pumps
If a I gather heat pumps extract heat from the outside air to warm the inside of the house then what is the effect of densely packed housing in london say on the outside air temperature when all homes are busy sucking the heat out the air?
Shouldn't really be a problem. At the end of the day you're taking the latent heat out of the air in the same way a fridge takes the latent heat out of your sausages and dumps the heat in your kitchen, and there's a lot of air.
Heat pumps do have requirements in terms of how much empty space you need in front of them. You can't put them on a side wall, facing another building that is close by, for example.
One surprise for many about heat pumps is just how much air they need to push through. It is a *lot* - probably much more than your super Turbo-Kitchen-Extractor for your 6 ring range on full chat, and that usually prevents them going in e.g. a traditional loft.
One important thing for ASHPs is to make your house efficient first, so you only need say half the heat demand to keep it warm. Which means you need a much smaller cheaper heat pump when the difference may pay for part of the other work.
ASHPs can struggle for efficiency as you get below say 5C. But if you have done the fabric work well your house will stay warm for a long time.
I would always aim for a reversible ASHP such that it can be used for coolth in summer. Requires the right kind of heat distribution system inside the house.
Having said that, the London Heat Island effect may help with air temperature.
You can now get single room type heat pumps.
I'm getting ready to have one on my house after my current boiler, and just making sure that I have the stuff in place to swap it when necessary each time I do things. I currently have oversized rads anyway as I run my central heating at 40-45C for greater efficiency.
My question was more about unanticipated climate effects if everyone uses one.....heat pumps were invented to solve a problem and I doubt anyone at the time sat down and thought out what happens if every house uses one
You might have an urban heat sink effect, a reverse of the current heat island effect caused (in winter) by people's leaky homes heating the city at large.
The effect would be large enough to be measurable, but not large enough to cause any issues.
You are just recycling heat.
You are only putting in to the house what the house is leaking to the atmosphere, plus whatever you've taken out of the air in the vicinity of the wind turbine.
Otherwise your house is going to get intolerably hot after a while.
The one thing you are definitely not doing is cooling the vicinity.
You're redistributing heat. Obviously you're removing some from outside, though after a while you're only replacing heat that you've since lost - so a steady state. This is a large difference with the status quo.
A loss of heat island effect you mean, rather than active cooling?
Most of the heat island effect is to do with surface temperatures and lack of vegetation rather than active heating. Whatever the effect is of not burning things, it isn't going to be large.
I just changed my 2nd AZ jab from the end of July to end of June. If anyone is waiting for a 2nd jab using the online NHS system you can re-book to bring it forward. You do have to cancel your existing appointment first. Hope it helps someone.
Is this a clear benefit? I thought AZ worked better with a longer gap? How many weeks is best guess optimal?
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
What are the current green alternatives to a gas boiler which heats radiators and water for a terraced house in London, say?
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
My brother-in-law's new build (in Ireland) is very comfortably warm with a heat pump alone. I reckon you could mandate all new builds to be built to a standard that included heat pumps for heating. The technology is there.
For existing houses, not so much, but that's why people are developing things like the microwave boiler. Give people a problem to fix and they will come up with multiple solutions. Exciting times.
We have just done one in a large house, the client hates it, they were expecting something like a boiler, its nothing like that, there is so much pipework and equipment and it just provides background heat. The pump uses the heat in the outside air and ground so on a very cold day they will struggle to warm a house. The idea that you could retrofit current three bed semis with heat pumps is a non starter.
We are certainly not recommending them at the moment. They are eye wateringly expensive, usually 5 times the cost of a boiler and do not work anywhere near as well in heating a house.
You shouldn't struggle to heat the house if the air is cold if the pump (and heating system) has been sized correctly... However in my experience this often requires multiple heat pumps or a 3-phase power supply for a large retrofit.
Genuine question as I know little of heat pumps
If a I gather heat pumps extract heat from the outside air to warm the inside of the house then what is the effect of densely packed housing in london say on the outside air temperature when all homes are busy sucking the heat out the air?
Shouldn't really be a problem. At the end of the day you're taking the latent heat out of the air in the same way a fridge takes the latent heat out of your sausages and dumps the heat in your kitchen, and there's a lot of air.
Heat pumps do have requirements in terms of how much empty space you need in front of them. You can't put them on a side wall, facing another building that is close by, for example.
One surprise for many about heat pumps is just how much air they need to push through. It is a *lot* - probably much more than your super Turbo-Kitchen-Extractor for your 6 ring range on full chat, and that usually prevents them going in e.g. a traditional loft.
One important thing for ASHPs is to make your house efficient first, so you only need say half the heat demand to keep it warm. Which means you need a much smaller cheaper heat pump when the difference may pay for part of the other work.
ASHPs can struggle for efficiency as you get below say 5C. But if you have done the fabric work well your house will stay warm for a long time.
I would always aim for a reversible ASHP such that it can be used for coolth in summer. Requires the right kind of heat distribution system inside the house.
Having said that, the London Heat Island effect may help with air temperature.
You can now get single room type heat pumps.
I'm getting ready to have one on my house after my current boiler, and just making sure that I have the stuff in place to swap it when necessary each time I do things. I currently have oversized rads anyway as I run my central heating at 40-45C for greater efficiency.
My question was more about unanticipated climate effects if everyone uses one.....heat pumps were invented to solve a problem and I doubt anyone at the time sat down and thought out what happens if every house uses one
OK.
There is already the thing I mentioned called the "Urban Heat Island" effect, which means that cities tend to run a little warmer than other places due to the people all living close together and the packed infrastrructure (think of all that heat leaking out of the Tube System) warming it up a little.
On the impact of heat pumps, in general it should reduce the impact of an urban heat island. All energy ends up going back into the surrounding environment - just more slowly if eg you have a well-insulated house.
Heat pumps use about 1/3 of the energy input to pull the same energy out of the air as normally entirely comes from your gas boiler or storage heaters. The extra energy (heat) going into your house will be 1/3 of what it was before, so by the time it has all leaked back out into the environment, it will have less impact than before. All the heat you extract from the air outside will still return outside, but you will be putting less extra in from your electricity or gas supply.
So it won't be that it is "made colder" as "made less warmer".
One time I can think there might be an effect is if you install a too-big WSHP (water source heat pump) in a limited body of water, and it could cool it down. But you would know about that as your system would nnot work well.
Here's the new legal regulation introduced by SNP ministers stopping Scots from traveling to certain parts of England - Bedford, Blackburn with Darwen, and Bolton.
I don't think this has happened until now in pandemic (someone will tell me if not..)
Of course the writ of Scots law only runs in Scotland - so all they can make illegal is leaving Scotland with the purpose of travelling to these places…
This sort of thing just brings the law into disrepute. Bringing in completely unenforceable laws is a bad thing. Surely even Nicola can see that.
The decision was only ever going to be made on 14 June. Much as the media wants an immediate answer, that's the whole point of this farcically slow five-week unlocking schedule. 😕
Here's the new legal regulation introduced by SNP ministers stopping Scots from traveling to certain parts of England - Bedford, Blackburn with Darwen, and Bolton.
I don't think this has happened until now in pandemic (someone will tell me if not..)
Of course the writ of Scots law only runs in Scotland - so all they can make illegal is leaving Scotland with the purpose of travelling to these places…
This sort of thing just brings the law into disrepute. Bringing in completely unenforceable laws is a bad thing. Surely even Nicola can see that.
Despite being unenforceable, surely it is also ultra vires?
I can’t believe it is lawful for a devolved administration to forbid travel activities that take place outside its own borders.
UPDATE: Ryanair has now amended its statement on the abduction of the Belarus journalist from its plane in Minsk. "Nothing untoward" has been changed to "an act of aviation piracy. https://twitter.com/LizSly/status/1396803200578199560?s=20
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
What are the current green alternatives to a gas boiler which heats radiators and water for a terraced house in London, say?
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
My brother-in-law's new build (in Ireland) is very comfortably warm with a heat pump alone. I reckon you could mandate all new builds to be built to a standard that included heat pumps for heating. The technology is there.
For existing houses, not so much, but that's why people are developing things like the microwave boiler. Give people a problem to fix and they will come up with multiple solutions. Exciting times.
We have just done one in a large house, the client hates it, they were expecting something like a boiler, its nothing like that, there is so much pipework and equipment and it just provides background heat. The pump uses the heat in the outside air and ground so on a very cold day they will struggle to warm a house. The idea that you could retrofit current three bed semis with heat pumps is a non starter.
We are certainly not recommending them at the moment. They are eye wateringly expensive, usually 5 times the cost of a boiler and do not work anywhere near as well in heating a house.
You shouldn't struggle to heat the house if the air is cold if the pump (and heating system) has been sized correctly... However in my experience this often requires multiple heat pumps or a 3-phase power supply for a large retrofit.
Genuine question as I know little of heat pumps
If a I gather heat pumps extract heat from the outside air to warm the inside of the house then what is the effect of densely packed housing in london say on the outside air temperature when all homes are busy sucking the heat out the air?
Shouldn't really be a problem. At the end of the day you're taking the latent heat out of the air in the same way a fridge takes the latent heat out of your sausages and dumps the heat in your kitchen, and there's a lot of air.
Heat pumps do have requirements in terms of how much empty space you need in front of them. You can't put them on a side wall, facing another building that is close by, for example.
One surprise for many about heat pumps is just how much air they need to push through. It is a *lot* - probably much more than your super Turbo-Kitchen-Extractor for your 6 ring range on full chat, and that usually prevents them going in e.g. a traditional loft.
One important thing for ASHPs is to make your house efficient first, so you only need say half the heat demand to keep it warm. Which means you need a much smaller cheaper heat pump when the difference may pay for part of the other work.
ASHPs can struggle for efficiency as you get below say 5C. But if you have done the fabric work well your house will stay warm for a long time.
I would always aim for a reversible ASHP such that it can be used for coolth in summer. Requires the right kind of heat distribution system inside the house.
Having said that, the London Heat Island effect may help with air temperature.
You can now get single room type heat pumps.
I'm getting ready to have one on my house after my current boiler, and just making sure that I have the stuff in place to swap it when necessary each time I do things. I currently have oversized rads anyway as I run my central heating at 40-45C for greater efficiency.
My question was more about unanticipated climate effects if everyone uses one.....heat pumps were invented to solve a problem and I doubt anyone at the time sat down and thought out what happens if every house uses one
You might have an urban heat sink effect, a reverse of the current heat island effect caused (in winter) by people's leaky homes heating the city at large.
The effect would be large enough to be measurable, but not large enough to cause any issues.
You are just recycling heat.
You are only putting in to the house what the house is leaking to the atmosphere, plus whatever you've taken out of the air in the vicinity of the wind turbine.
Otherwise your house is going to get intolerably hot after a while.
The one thing you are definitely not doing is cooling the vicinity.
You're redistributing heat. Obviously you're removing some from outside, though after a while you're only replacing heat that you've since lost - so a steady state. This is a large difference with the status quo.
A loss of heat island effect you mean, rather than active cooling?
Most of the heat island effect is to do with surface temperatures and lack of vegetation rather than active heating. Whatever the effect is of not burning things, it isn't going to be large.
The heat island effect in summer is different to winter.
I'm a bit concerned about noise. has anybody any direct experience?
Very loud, when the fan is running
That would be a show stopper in many situations. I suppose ground source are quieter and could be sound proofed but they require a big garden or deep pile. Capital cost is relatively high. No easy answers except much cheaper electricity and as thing stand there has to be a nuclear programme. One problem we have is top-down selection of technical solutions at an early stage of the process. Suppose hydrogen fuel cells become the best technology for cars? Suppose we can produce electricity more cheaply and so can create hydrogen and then package it as synthetic (non-)fossil fuels so cars and domestic heating can continue with updated current technology?
You need to go and listen to some. It depends on all sorts of factors. They are gradually getting quieter. Take a sound reading on your phone, and compare to your fan heater. But some people have things about different sorts of noise.
Hope that’s just bad reporting, and government aren’t going to be so silly as to mandate replacement of working equipment?
Its a bullshit idea from start to finish but the headline is at least slightly misleading. In the text it says:
"The Business department wants to make it mandatory for anyone replacing a conventional gas boiler or doing significant renovations to go green."
So it is talking about not replacing a gas boiler at the end of its life with another gas boiler. I suspect the significant renovations refers to if you have to upgrade your boiler because of extensions etc in which case, again, you cannot replace with another gas boiler. Nothing in the story at the moment indicates people will be forced to replace working, fit for purpose equipment.
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
What are the current green alternatives to a gas boiler which heats radiators and water for a terraced house in London, say?
That story is bullshit, but I can't be bothered to explain the details of what will actually happen.
As I said the other day the technology is not there with heat pumps. You need various cylinders to go with them so houses will need a plant room. They also just provide background heat. People are used to their radiators getting hot, that will never happen with a heat pump. On a cold day without any additional form of heating then a house will be cold. Heat pumps are not the answer.
My brother-in-law's new build (in Ireland) is very comfortably warm with a heat pump alone. I reckon you could mandate all new builds to be built to a standard that included heat pumps for heating. The technology is there.
For existing houses, not so much, but that's why people are developing things like the microwave boiler. Give people a problem to fix and they will come up with multiple solutions. Exciting times.
We have just done one in a large house, the client hates it, they were expecting something like a boiler, its nothing like that, there is so much pipework and equipment and it just provides background heat. The pump uses the heat in the outside air and ground so on a very cold day they will struggle to warm a house. The idea that you could retrofit current three bed semis with heat pumps is a non starter.
We are certainly not recommending them at the moment. They are eye wateringly expensive, usually 5 times the cost of a boiler and do not work anywhere near as well in heating a house.
You shouldn't struggle to heat the house if the air is cold if the pump (and heating system) has been sized correctly... However in my experience this often requires multiple heat pumps or a 3-phase power supply for a large retrofit.
Genuine question as I know little of heat pumps
If a I gather heat pumps extract heat from the outside air to warm the inside of the house then what is the effect of densely packed housing in london say on the outside air temperature when all homes are busy sucking the heat out the air?
Shouldn't really be a problem. At the end of the day you're taking the latent heat out of the air in the same way a fridge takes the latent heat out of your sausages and dumps the heat in your kitchen, and there's a lot of air.
Heat pumps do have requirements in terms of how much empty space you need in front of them. You can't put them on a side wall, facing another building that is close by, for example.
One surprise for many about heat pumps is just how much air they need to push through. It is a *lot* - probably much more than your super Turbo-Kitchen-Extractor for your 6 ring range on full chat, and that usually prevents them going in e.g. a traditional loft.
One important thing for ASHPs is to make your house efficient first, so you only need say half the heat demand to keep it warm. Which means you need a much smaller cheaper heat pump when the difference may pay for part of the other work.
ASHPs can struggle for efficiency as you get below say 5C. But if you have done the fabric work well your house will stay warm for a long time.
I would always aim for a reversible ASHP such that it can be used for coolth in summer. Requires the right kind of heat distribution system inside the house.
Having said that, the London Heat Island effect may help with air temperature.
You can now get single room type heat pumps.
I'm getting ready to have one on my house after my current boiler, and just making sure that I have the stuff in place to swap it when necessary each time I do things. I currently have oversized rads anyway as I run my central heating at 40-45C for greater efficiency.
My question was more about unanticipated climate effects if everyone uses one.....heat pumps were invented to solve a problem and I doubt anyone at the time sat down and thought out what happens if every house uses one
You might have an urban heat sink effect, a reverse of the current heat island effect caused (in winter) by people's leaky homes heating the city at large.
The effect would be large enough to be measurable, but not large enough to cause any issues.
You are just recycling heat.
You are only putting in to the house what the house is leaking to the atmosphere, plus whatever you've taken out of the air in the vicinity of the wind turbine.
Otherwise your house is going to get intolerably hot after a while.
The one thing you are definitely not doing is cooling the vicinity.
You're redistributing heat. Obviously you're removing some from outside, though after a while you're only replacing heat that you've since lost - so a steady state. This is a large difference with the status quo.
A loss of heat island effect you mean, rather than active cooling?
Most of the heat island effect is to do with surface temperatures and lack of vegetation rather than active heating. Whatever the effect is of not burning things, it isn't going to be large.
The heat island effect in summer is different to winter.
Yes - the impact would be less than whatever happens now.
Yes on the Heat Island variability - hence the link. I am aware, but not a specialist.
Strange lack of attention for what I believe is the first British world champion in the 4 belt era, perhaps he was waving the wrong flag after the match. A world title fight on the castle esplanade would be cool tho’.
Yes. The BBC ignored it so comprehsively that they only posted highlights at the top of the Boxing page
And that notorious SNP mouthpiece, the Daily Mail, calling "the immortal Scot" having one of the "finest wins ever" was a clear slur on the good name of your country
I knew I could rely on you. At least I got you off your ass for an I assume enjoyable 50 minutes of trawling Google so you can be right on the internet, I hope you're suitably grateful.
'I could go on...'
You will, you will.
Typing “Josh Taylor” into Google may take you 50 minutes but for most of us...
We're catching up with the USA on fully vaccinated. Around 5% behind.
There's definitely been a pretty big pick up in the second dose rate here and a small slowdown in the US as many areas approach demand satisfaction. I think we'll set the single day record this week for total numbers and possibly even the weekly record this week and then again next week as the government tries to get through as many second doses in groups 1-9 as possible before 7th of June.
I was able to bring my second jab forward by 21 days. I realise that epidemiologically it's better for me to wait but as I had to change the appt anyway (due to a clash with my son's school) I thought I might as well get it out of the way. Will still be eight weeks or so between jabs.
Today is Jab 1 + 9 weeks for me. Still no message from Bozo inviting me to bring my second appointment forward.
I didn't get a message, I had to change my original appointment anyway – and when I did so was offered a slot much sooner. Try it!
I had a look, and the first thing I would need to do is cancel my appointment. I didn't want to do that in case I got shunted even further back.
It literally took me two minutes, the very next page offers you a new date – and mine were three weeks ahead...
I just tried it and was given an appointment on the same day I'd already booked. Guess I'll just have to be patient.
But that's been the policy all along. The whole point of the five week gap is for the changes to bed in.
Its like Hancock never said in the press conference last week that the decision will be made one week before the 21st June....
The media never listen, well I mean they never even look who is at the press conferences these days, hence they asked a question to Patrick Valence when he wasn't even there.
What are the current green alternatives to a gas boiler which heats radiators and water for a terraced house in London, say?
Green point 1 is always Fabric First - make insulated, ventilated, airtight, so that your energy requirement is 1/3 or 2/3 less, and you can have a smaller, cheaper whatever-it-is at the start. Nice thing about terraces is that you only have half the walls.
ASHP is probably a good one. You may need bigger radiators for distribution or perhaps look at a thin-layer ufh system which are available down to about 18mm thick. OTOH existing rads may deliver the heat you need if you have fabric-firsted well.
Don't forget about the hot water, which is always a bigger instant load than heating. Or that for really well insulated houses, often cooling it down at certain times is the bigger challenge.
Something like a Sunamp heat battery may be a decent boost (heat it up on offpeak), or for the water. I am not sure yet whether that is yet up to being a full heating system - again depends on the house.
Or as it is London with its 'orrible air quality, something like a forced air heating system which would incorporate filters might be suitable. That could use an Air to Air Heat Pump. ASHP can also feed rads I believe.
A Labour councillor has been suspended after accusing the Israeli government of kidnapping Palestinian children to 'harvest their organs'.
Yusuf Jan-Virmani, an ex-Blackburn with Darwen Council executive board member councillor, also compared Israeli people to 'crocodiles' during the group's annual meeting last Thursday.
Oh, and on boilers - a boiler that only works on natural gas won't be much use when there is hydrogen coming out of the pipe.
How/when exactly will we switch over from natural gas to hydrogen - or is it an entirely new network of pipes ? I don't have an issue with burning hydrogen to warm my house but forsee difficulties in a national switchover.
I also have lots of engineering questions…
The only way I can think to do it is to mandate that new boilers have to be "hydrogen ready" in say 2024, you then mandate that people with boilers in let's say ooh 2035 have to switch by 2040 at which point you have a hard switchover on the system. Human led climate change is a long term, VERY long term issue - a few years here or there in a country like the UK won't make much odds and measures will be more accepted if stuff like this is done gradually.
Hydrogen embrittlement says hello.
Running hydrogen though domestic plumbing will be errrrr... interesting. Among other fun features, hydrogen can "leak" through solid materials.
Hydrogen gas is H2, how does that tunnel?
Hydrogen (H2) is very small, and some substances are sufficiently porous that it can go through the gaps. This is why different gas cylinders use different cylinder heads, for instance.
Belarusian authorities have stopped a start of a Lufthansa commercial flight LH1487 Minsk-Frankfurt "because of a terror threat". All passengers have been requested to leave the plane and to proceed to security control. I wonder, what dissident is on board this time. ….
URGENT UPDATE: The LH1487 flight has started after 2 hours delay, is currently leaving Belarusian airspace. It is not clear, if all passengers are on board, but I would assume, ppl who are wanted by authorities, would be detained at border control. So it was a power demonstration ….
Belarusian authorities have stopped a start of a Lufthansa commercial flight LH1487 Minsk-Frankfurt "because of a terror threat". All passengers have been requested to leave the plane and to proceed to security control. I wonder, what dissident is on board this time. ….
URGENT UPDATE: The LH1487 flight has started after 2 hours delay, is currently leaving Belarusian airspace. It is not clear, if all passengers are on board, but I would assume, ppl who are wanted by authorities, would be detained at border control. So it was a power demonstration ….
Why doesn't Boris just say he wrote the works of Shakespeare under a nom de plume. The fanbois wouldn't doubt it and could cheerfully cross swords with the disputing heretics.
1. That the attitude towards the EU remains the dominant feature of British politics 2. That the UK outperforms the EU
Now, I'm reasonably confident on 2 (but far from certain, because the reality is that 'events' don't always pan out as one expects). But I'd be far less certain about 1.
BoZo's approach to the reality of Brexit so far has been to sell out every single interest group he "promised" would benefit from it.
Northern Ireland? Fuck 'em
Fishermen? Fuck 'em
Farmers? Fuck 'em.
While the effect of this so far has been to boost his popularity among those who are not members of these groups, I am tempted to suggest that there is a limit to how far you can stretch this political strategy and still "win"
Europhiles would be calling such a trade deal a triumph.
That Times article declares that even if Aussie beef and veal exports to the UK increase tenfold, they will still be providing only 2% of our beef and veal consumption. The whole thing is a storm in a tea cup. The NFU need to pipe down, useless arseholes.
You can only lie for so long and get away with it. Even when the people you are lying to both want you to lie to them if it upsets the other side and don't understand why its a lie anyway.
Eventually the wall of reality always gets in the way. In the case of Australia perhaps not - the trade deal that is So Good for Great Britain* has been put on a 15 year delay so that Boris gets the accolade for signing it and Someone Else gets the blame when it catastrophically kicks in.
Its tactical brilliance again from the Cult, but demonstrates in clear text that he doesn't give a rat fuck about what is left of this country*
*Northern Ireland? What's that?
Given how your squeals of indignation about the introduction of trade barriers following Brexit could be heard from New South Wales, I'm a bit surprised* that you seem so opposed to us removing trade barriers with someone else. Are you for barriers to trade or against them?
For those still banging on (what have I written!) about the Iraq War and Blair's deception, let us not forget that one man who was totally in favour of it was one Iain Duncan Smith, at the time Leader of the Conservative party. If he had supported Kennedy's opposition just possibly we wouldn't have been involved.
A counter-factual where the Iraq War didn't happen would be interesting. I suspect the Iranians would have got Saddam, probably with a suicide bomber and we'd all have heaved a sigh of relief and moved on.
For those still banging on (what have I written!) about the Iraq War and Blair's deception, let us not forget that one man who was totally in favour of it was one Iain Duncan Smith, at the time Leader of the Conservative party. If he had supported Kennedy's opposition just possibly we wouldn't have been involved.
A counter-factual where the Iraq War didn't happen would be interesting. I suspect the Iranians would have got Saddam, probably with a suicide bomber and we'd all have heaved a sigh of relief and moved on.
If one has attempted to read "The Churchill Factor" by Boris, or was it "The Boris factor" by Churchill, I forget, one would realise the importance of finding a ghost writer with a very florid writing style to authentically capture Johnson's penmanship.
We had some comments about the situation in Thailand upthread. For those interested, this has just appeared on my Facebook page (I know, I know) from the 'fan club of Thailand', associated with TourismThailand: "By the end of 2021/start of 2022, Thai authorities say that quarantine should be lifted entirely in all areas of Thailand for vaccinated visitors. The proposed date for this to happen is on or before 1 January, 2022."
Whether this will actually happen, of course.......
For those still banging on (what have I written!) about the Iraq War and Blair's deception, let us not forget that one man who was totally in favour of it was one Iain Duncan Smith, at the time Leader of the Conservative party. If he had supported Kennedy's opposition just possibly we wouldn't have been involved.
A counter-factual where the Iraq War didn't happen would be interesting. I suspect the Iranians would have got Saddam, probably with a suicide bomber and we'd all have heaved a sigh of relief and moved on.
If one has attempted to read "The Churchill Factor" by Boris, or was it "The Boris factor" by Churchill, I forget, one would realise the importance of finding a ghost writer with a very florid writing style to authentically capture Johnson's penmanship.
Following the forced diversion of a @Ryanair aircraft to Minsk yesterday, I’ve instructed @UK_CAA to request airlines avoid Belarusian airspace in order to keep passengers safe. I have also suspended Belavia’s operating permit.
For those still banging on (what have I written!) about the Iraq War and Blair's deception, let us not forget that one man who was totally in favour of it was one Iain Duncan Smith, at the time Leader of the Conservative party. If he had supported Kennedy's opposition just possibly we wouldn't have been involved.
A counter-factual where the Iraq War didn't happen would be interesting. I suspect the Iranians would have got Saddam, probably with a suicide bomber and we'd all have heaved a sigh of relief and moved on.
If one has attempted to read "The Churchill Factor" by Boris, or was it "The Boris factor" by Churchill, I forget, one would realise the importance of finding a ghost writer with a very florid writing style to authentically capture Johnson's penmanship.
As Truman Capote said of Jack Kerouac “That’s not writing, that’s typing”
We had some comments about the situation in Thailand upthread. For those interested, this has just appeared on my Facebook page (I know, I know) from the 'fan club of Thailand', associated with TourismThailand: "By the end of 2021/start of 2022, Thai authorities say that quarantine should be lifted entirely in all areas of Thailand for vaccinated visitors. The proposed date for this to happen is on or before 1 January, 2022."
Whether this will actually happen, of course.......
I got something from Visit Australia on mine today, which is some seriously wishful thinking...
Comments
" 2230 Hrs: Suddenly, I feel a burning sensation on my right foot and ankle, I quickly switch off the power supply to my electric suit, the pain subsides and I estimate I will be without the warmth of my flying suit for the next five hours. I assured the skipper I can cope, but didn’t tell him my biggest worry was would I be able to play football the following day"
https://internationalbcc.co.uk/about-ibcc/news/a-day-in-the-life-of-a-rear-gunner/
.
I would've thought a patriotic Scot would be glad to have a falsehood about Caledonian history corrected.
As you indicated, key is that it is well insulated and that windows are double-glazed (with heat reflective blinds) and seal very well.
One important thing for ASHPs is to make your house efficient first, so you only need say half the heat demand to keep it warm. Which means you need a much smaller cheaper heat pump when the difference may pay for part of the other work.
ASHPs can struggle for efficiency as you get below say 5C. But if you have done the fabric work well your house will stay warm for a long time.
I would always aim for a reversible ASHP such that it can be used for coolth in summer. Requires the right kind of heat distribution system inside the house.
Having said that, the London Heat Island effect may help with air temperature.
You can now get single room type heat pumps.
I'm getting ready to have one on my house after my current boiler, and just making sure that I have the stuff in place to swap it when necessary each time I do things. I currently have oversized rads anyway as I run my central heating at 40-45C for greater efficiency.
We had a holiday let one summer – a mate dropped a pan or vase from the shelf above onto the cooking surface of Bosch induction hob, cracking the glass (again, glass – WTF?). They had to replace the entire plate – cost us about £400 for the repair IIRC!
less likely to start a fire? yes
less likely to burn your hand? yes
But giant electromagnets like that in the kitchen scare me.
No thanks, not a huge fan of that much non-ionizing radiation if I can avoid it.
Never buy a house under a power line...
It's like pointing out someone's spelling or grammar errors, invariably you miss your own in doing so.
At least I got you off your ass for an I assume enjoyable 50 minutes of trawling Google so you can be right on the internet, I hope you're suitably grateful.
'I could go on...'
You will, you will.
Locally it might reduce the heat island effect of cities making cities marginally colder. From the twin effects of dumping cold air outside and from the effect of not heating the air inside in the first place.
Directly emitting more heat will make no difference for ludicrous increases - orders of magnitude over current levels.
That’s not a farmhouse, it’s a *compound*.
Lithuania has decided that all flights to and from Lithuanian airports must avoid the airspace of neighbouring Belarus, the transport minister said on Monday.
Marius Skuodis said the ban would come into effect at 3 a.m. on Tuesday (midnight GMT).
https://www.devdiscourse.com/article/business/1585105-all-lithuanian-flights-to-avoid-belarusian-airspace-says-minister
I just changed my 2nd AZ jab from the end of July to end of June. If anyone is waiting for a 2nd jab using the online NHS system you can re-book to bring it forward. You do have to cancel your existing appointment first. Hope it helps someone.
Some systems I have seen would make William, Froude (https://en.wikipedia.org/wiki/William_Froude) cry bitter tears. His work on propellor shapes carries over into fan design..... And yet people still make fans that are really noise makers that accidentally move air.
We never got gas-boiler supplied central heating; skipped that technology completely.
Most of us grew up with a fire, a few electric bar heaters, and hot water bottles.
Thus ends my contribution to the home heating debate.
The effect would be large enough to be measurable, but not large enough to cause any issues.
So how much?
https://twitter.com/LizSly/status/1396803200578199560?s=20
Most companies today (who aren’t building ships or planes) probably just buy standard 13A electric fans off the shelf, without a lot of consideration into the nuances of performance, efficiency and noise.
Removing that heating from winter cities would be measurable. You'd expect people to have more garden frosts, for example.
If the house wasn't leaking it back out again, it would get intolerably hot after a while.
The one thing you are definitely not doing is cooling the atmosphere, at least in the long run.
Most of the heat island effect is to do with surface temperatures and lack of vegetation rather than active heating. Whatever the effect is of not burning things, it isn't going to be large.
https://news.sky.com/story/pms-review-of-social-distancing-rules-set-to-be-delayed-by-indian-variant-12315874
There is already the thing I mentioned called the "Urban Heat Island" effect, which means that cities tend to run a little warmer than other places due to the people all living close together and the packed infrastrructure (think of all that heat leaking out of the Tube System) warming it up a little.
There a decent Wiki article about it:
https://en.wikipedia.org/wiki/Urban_heat_island
On the impact of heat pumps, in general it should reduce the impact of an urban heat island. All energy ends up going back into the surrounding environment - just more slowly if eg you have a well-insulated house.
Heat pumps use about 1/3 of the energy input to pull the same energy out of the air as normally entirely comes from your gas boiler or storage heaters. The extra energy (heat) going into your house will be 1/3 of what it was before, so by the time it has all leaked back out into the environment, it will have less impact than before. All the heat you extract from the air outside will still return outside, but you will be putting less extra in from your electricity or gas supply.
So it won't be that it is "made colder" as "made less warmer".
One time I can think there might be an effect is if you install a too-big WSHP (water source heat pump) in a limited body of water, and it could cool it down. But you would know about that as your system would nnot work well.
I can’t believe it is lawful for a devolved administration to forbid travel activities that take place outside its own borders.
Not sure I have thick enough jumpers to cover that. This is grim.
There are various regulations which apply (eg MCS regulations and some Planning rules). See page 100 of the Permitted Development rules:
https://forum.buildhub.org.uk/topic/1740-ashp-and-permitted-development/
I know people with ones only 2-3m away which are fine.
There are also obvious things like don't put the intake near your neighbour's flue outlet.
There's a thread about this over on Buildhub. A couple of years old, but relevant.
https://forum.buildhub.org.uk/topic/1740-ashp-and-permitted-development/
"The Business department wants to make it mandatory for anyone replacing a conventional gas boiler or doing significant renovations to go green."
So it is talking about not replacing a gas boiler at the end of its life with another gas boiler. I suspect the significant renovations refers to if you have to upgrade your boiler because of extensions etc in which case, again, you cannot replace with another gas boiler. Nothing in the story at the moment indicates people will be forced to replace working, fit for purpose equipment.
Yes on the Heat Island variability - hence the link. I am aware, but not a specialist.
https://www.youtube.com/watch?v=yYgXedpeMuc
How else to explain his claim that we could have avoided lockdown 1?
The media never listen, well I mean they never even look who is at the press conferences these days, hence they asked a question to Patrick Valence when he wasn't even there.
Technologies in this situation?
(I would build a heat model so I can countercheck whether I need the version they claim - ss here https://forum.buildhub.org.uk/topic/439-fabric-and-ventilation-heat-loss-calculator/)
ASHP is probably a good one. You may need bigger radiators for distribution or perhaps look at a thin-layer ufh system which are available down to about 18mm thick. OTOH existing rads may deliver the heat you need if you have fabric-firsted well.
Don't forget about the hot water, which is always a bigger instant load than heating. Or that for really well insulated houses, often cooling it down at certain times is the bigger challenge.
Something like a Sunamp heat battery may be a decent boost (heat it up on offpeak), or for the water. I am not sure yet whether that is yet up to being a full heating system - again depends on the house.
Or as it is London with its 'orrible air quality, something like a forced air heating system which would incorporate filters might be suitable. That could use an Air to Air Heat Pump. ASHP can also feed rads I believe.
Just thoughts.
https://www.powells.com/book/shakespeare-the-riddle-of-genius-9780399184543
Release Date: 31/12/2035
https://www.thriftbooks.com/w/shakespeare-the-riddle-of-genius_boris-johnson/11598970/#edition=11150656
Looks like this book project has been about forever....or along time into the future....
Perhaps he hasn't started it yet !
Yusuf Jan-Virmani, an ex-Blackburn with Darwen Council executive board member councillor, also compared Israeli people to 'crocodiles' during the group's annual meeting last Thursday.
https://www.dailymail.co.uk/news/article-9612573/Labour-councillor-suspended-comments-against-Israeli-government.html
URGENT UPDATE: The LH1487 flight has started after 2 hours delay, is currently leaving Belarusian airspace. It is not clear, if all passengers are on board, but I would assume, ppl who are wanted by authorities, would be detained at border control. So it was a power demonstration
….
https://twitter.com/sumlenny/status/1396812155463286785?s=20
https://twitter.com/sumlenny/status/1396825156140605441?s=20
How long have I been waiting to put Oswald Mosley and Tony Blair in the same sentence?
*not surprised at all
For those still banging on (what have I written!) about the Iraq War and Blair's deception, let us not forget that one man who was totally in favour of it was one Iain Duncan Smith, at the time Leader of the Conservative party.
If he had supported Kennedy's opposition just possibly we wouldn't have been involved.
A counter-factual where the Iraq War didn't happen would be interesting. I suspect the Iranians would have got Saddam, probably with a suicide bomber and we'd all have heaved a sigh of relief and moved on.
"By the end of 2021/start of 2022, Thai authorities say that quarantine should be lifted entirely in all areas of Thailand for vaccinated visitors. The proposed date for this to happen is on or before 1 January, 2022."
Whether this will actually happen, of course.......
https://twitter.com/grantshapps/status/1396835052168810499?s=20