Heating a room with split aircon unit
Hi all,
the split aircon unit we bought last spring did a cool job cooling the bedroom down, but it also has a heat function. I have tried this and it gets a room upto 18c in no time...im sure it is more economical than using other forms heating as the unit only draws 1.2kw when operating. Is there any info online about using them for heating? cheers Steve |
Heating a room with split aircon unit
In message ,
R.P.McMurphy writes the split aircon unit we bought last spring did a cool job cooling the bedroom down, but it also has a heat function. I have tried this and it gets a room upto 18c in no time...im sure it is more economical than using other forms heating as the unit only draws 1.2kw when operating. Is there any info online about using them for heating? Include the term "heat pump" in your search. Heating a house with a heat pump (what's in most AC units) is very efficient. -- Clive Mitchell http://www.bigclive.com |
Heating a room with split aircon unit
On Fri, 09 Mar 2007 11:21:25 +0000, Clive Mitchell wrote:
In message , R.P.McMurphy writes the split aircon unit we bought last spring did a cool job cooling the bedroom down, but it also has a heat function. I have tried this and it gets a room upto 18c in no time...im sure it is more economical than using other forms heating as the unit only draws 1.2kw when operating. Is there any info online about using them for heating? Include the term "heat pump" in your search. Heating a house with a heat pump (what's in most AC units) is very efficient. But is that what it does when it's heating? Does it chuck cold air out of where it would put out warm air when it's cooling (IYSWIM)? |
Heating a room with split aircon unit
But is that what it does when it's heating? Does it chuck cold air out of where it would put out warm air when it's cooling (IYSWIM)? Exactly right, hence the term "Heat Pump". The down side is that they generally don't work at low outside temperatures. John |
Heating a room with split aircon unit
In article m, John
writes But is that what it does when it's heating? Does it chuck cold air out of where it would put out warm air when it's cooling (IYSWIM)? Exactly right, hence the term "Heat Pump". The down side is that they generally don't work at low outside temperatures. John No they don't!. The one we have is fine except when it gets down to say less than 2-3 deg c when it spends a lot of time defrosting itself which means that its taking quite a bit off the mains in order to so that, but anything above those temps, its fine. If you could imagine its working in reverse to what its doing in the summer months.. its trying to "cool" the outside air and get rid of the heat inside the room!... -- Tony Sayer |
Heating a room with split aircon unit
"tony sayer" wrote in message ... In article m, John writes But is that what it does when it's heating? Does it chuck cold air out of where it would put out warm air when it's cooling (IYSWIM)? Exactly right, hence the term "Heat Pump". The down side is that they generally don't work at low outside temperatures. John No they don't!. The one we have is fine except when it gets down to say less than 2-3 deg c when it spends a lot of time defrosting itself which means that its taking quite a bit off the mains in order to so that, but anything above those temps, its fine. If you could imagine its working in reverse to what its doing in the summer months.. its trying to "cool" the outside air and get rid of the heat inside the room!... -- Tony Sayer However, don't some just have a "fan heater" type of element to provide heating? Simpler and cheaper models. |
Heating a room with split aircon unit
In message , tony sayer
writes No they don't!. The one we have is fine except when it gets down to say less than 2-3 deg c when it spends a lot of time defrosting itself which means that its taking quite a bit off the mains in order to so that, but anything above those temps, its fine. If you could imagine its working in reverse to what its doing in the summer months.. its trying to "cool" the outside air and get rid of the heat inside the room!... But where heat pumps really do work for heating is where there's a modestly accessible geothermal source. This could be a bit of pipe laid at a modest depth under the garden or a heat extractor in a local stream. Not particularly easy DIY projects though. -- Clive Mitchell http://www.bigclive.com |
Heating a room with split aircon unit
In message , Huge
writes Could you suggest a system suitable for dropping down my well? Yes. Anything by Microsoft. -- Clive Mitchell http://www.bigclive.com |
Heating a room with split aircon unit
In article ,
tony sayer writes: No they don't!. The one we have is fine except when it gets down to say less than 2-3 deg c when it spends a lot of time defrosting itself which means that its taking quite a bit off the mains in order to so that, but anything above those temps, its fine. Same with mine. Useful if you are working at home and only want to heat that room too, rather than the whole house. -- Andrew Gabriel [email address is not usable -- followup in the newsgroup] |
Heating a room with split aircon unit
On 9 Mar, 19:32, Clive Mitchell wrote:
In message , Huge writes Could you suggest a system suitable for dropping down my well? Yes. Anything by Microsoft. -- Clive Mitchellhttp://www.bigclive.com ROFPML! |
Heating a room with split aircon unit
On Fri, 09 Mar 2007 19:32:48 GMT, Clive Mitchell
wrote: In message , Huge writes Could you suggest a system suitable for dropping down my well? Yes. Anything by Microsoft. I did notice two other threads today related to hanging gates, but sadly they weren't what I thought. -- ..andy |
Heating a room with split aircon unit
In message , Clive Mitchell
writes Could you suggest a system suitable for dropping down my well? Yes. Anything by Microsoft. The serious answer being that the water based heat extraction does require water flow to maintain the temperature difference. -- Clive Mitchell http://www.bigclive.com |
Heating a room with split aircon unit
Andy Hall pretended :
On Fri, 09 Mar 2007 19:32:48 GMT, Clive Mitchell wrote: In message , Huge writes Could you suggest a system suitable for dropping down my well? Yes. Anything by Microsoft. I did notice two other threads today related to hanging gates, but sadly they weren't what I thought. :-)) -- Regards, Harry (M1BYT) (L) http://www.ukradioamateur.co.uk |
Heating a room with split aircon unit
"John" wrote in message s.com... But is that what it does when it's heating? Does it chuck cold air out of where it would put out warm air when it's cooling (IYSWIM)? Exactly right, hence the term "Heat Pump". The down side is that they generally don't work at low outside temperatures. John I.ve checked the unit's label, it says 1280w input power for 13000 btu output. 13000btu is 3.8kw...seems a good way to heat my house...will defo be using it more often from now on! Steve |
Heating a room with split aircon unit
On Sat, 10 Mar 2007 18:51:11 -0000, "R.P.McMurphy"
wrote: "John" wrote in message ps.com... But is that what it does when it's heating? Does it chuck cold air out of where it would put out warm air when it's cooling (IYSWIM)? Exactly right, hence the term "Heat Pump". The down side is that they generally don't work at low outside temperatures. John I.ve checked the unit's label, it says 1280w input power for 13000 btu output. 13000btu is 3.8kw...seems a good way to heat my house...will defo be using it more often from now on! Steve Interesting if Cost{electricity) 3 x Cost (gas) -- ..andy |
Heating a room with split aircon unit
"R.P.McMurphy" wrote in message ... "John" wrote in message s.com... But is that what it does when it's heating? Does it chuck cold air out of where it would put out warm air when it's cooling (IYSWIM)? Exactly right, hence the term "Heat Pump". The down side is that they generally don't work at low outside temperatures. John I.ve checked the unit's label, it says 1280w input power for 13000 btu output. 13000btu is 3.8kw...seems a good way to heat my house...will defo be using it more often from now on! Steve That is a rating at certain temperatures only usually around 15 deg'c outdoor temp (and besides the Ebay Chinese specials are notoriously dodgy with their ratings.) the lower the outdoor temperature the closer to 1:1 it gets. However the better the manufacturer is the lower the outdoor temp can be before that point is reached. If it's on this list http://www.eca.gov.uk/etl/find/_P_He...b=ResultsPanel it's worth considering however some are still more energy efficient than others. The best overall in my view are Daikin but even within their own range of splits strangely some of them are more efficient than others. The added bonus from this list is that anything on it has a 5% VAT levy. This applies to the unit and associated building costs. Whatever that might mean ;-) Cheers Richard |
Heating a room with split aircon unit
No they don't!. The one we have is fine except when it gets down to say less than 2-3 deg c when it spends a lot of time defrosting itself which means that its taking quite a bit off the mains in order to so that, but anything above those temps, its fine. If you could imagine its working in reverse to what its doing in the summer months.. its trying to "cool" the outside air and get rid of the heat inside the room!... But where heat pumps really do work for heating is where there's a modestly accessible geothermal source. This could be a bit of pipe laid at a modest depth under the garden or a heat extractor in a local stream. Not particularly easy DIY projects though. -- Clive Mitchell http://www.bigclive.com As it happens i have a stream flowing past my garden...is it easier/better to use that as a heat source than burying pipes? I have considered seeing if it'd be possible to have my own hydro electrical generator running of it too..but am unsure where to start! Steve |
Heating a room with split aircon unit
On Sun, 11 Mar 2007 09:38:21 -0000, "R.P.McMurphy"
wrote: No they don't!. The one we have is fine except when it gets down to say less than 2-3 deg c when it spends a lot of time defrosting itself which means that its taking quite a bit off the mains in order to so that, but anything above those temps, its fine. If you could imagine its working in reverse to what its doing in the summer months.. its trying to "cool" the outside air and get rid of the heat inside the room!... But where heat pumps really do work for heating is where there's a modestly accessible geothermal source. This could be a bit of pipe laid at a modest depth under the garden or a heat extractor in a local stream. Not particularly easy DIY projects though. -- Clive Mitchell http://www.bigclive.com As it happens i have a stream flowing past my garden...is it easier/better to use that as a heat source than burying pipes? I have considered seeing if it'd be possible to have my own hydro electrical generator running of it too..but am unsure where to start! Steve I have some friends in Sweden who have this scenario and looked into it for heating of a swimming pool. As it turned out, unless the water flow was substantial and with considerable drop (it wasn't either), the hydroelectric idea wasn't viable. OTOH, there did seem to be a range of geothermal equipment available that would work with a borehole and they went with that. It could be that this kind of equipment could work with water circulated from a stream as well -- ..andy |
Heating a room with split aircon unit
In message ,
R.P.McMurphy writes As it happens i have a stream flowing past my garden...is it easier/better to use that as a heat source than burying pipes? I have considered seeing if it'd be possible to have my own hydro electrical generator running of it too..but am unsure where to start! Is the stream fairly fast flowing and consistently full during the months when heat is needed? Is it prone to heavy flow with attendant rock movement? My dad has a small river at the bottom of his garden and it can be very destructive to anything that gets in it's path. -- Clive Mitchell http://www.bigclive.com |
Heating a room with split aircon unit
In article ,
Clive Mitchell writes: In message , R.P.McMurphy writes As it happens i have a stream flowing past my garden...is it easier/better to use that as a heat source than burying pipes? I have considered seeing if it'd be possible to have my own hydro electrical generator running of it too..but am unsure where to start! Is the stream fairly fast flowing and consistently full during the months when heat is needed? Is it prone to heavy flow with attendant rock movement? My dad has a small river at the bottom of his garden and it can be very destructive to anything that gets in it's path. I would be tempted to look for a solution which didn't leave a heat exchanger in the path of all the crap coming down the river. You could have a settling tank off the stream, overflowing back into the stream, and have an exchanger in that or pump a flow of water from it to an exchanger above ground, returning to the river. One of the first buildings to use heat pump technology for heating was the Royal Festival Hall on the Southbank when it opened in the early 1950's. It used a heat exchanger to take heat from the Thames. It was rather quickly abandoned due to continual failure of the river heat exchanger, but it was a new technology at the time. -- Andrew Gabriel [email address is not usable -- followup in the newsgroup] |
Heating a room with split aircon unit
As it happens i have a stream flowing past my garden...is it easier/better to use that as a heat source than burying pipes? I have considered seeing if it'd be possible to have my own hydro electrical generator running of it too..but am unsure where to start! Is the stream fairly fast flowing and consistently full during the months when heat is needed? yes Is it prone to heavy flow with attendant rock movement? no. It a small stream about 5 foot wide and a foot deep, but there are no rocks in it. In the summer flow is greatly reduced, but there is still flow. My dad has a small river at the bottom of his garden and it can be very destructive to anything that gets in it's path. -- Clive Mitchell http://www.bigclive.com |
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