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bontwoody
bontwoody
@bontwoody
Contributor
Noble Member
Joined: Mar 5, 2022
Last seen: Oct 6, 2026
Topics: 39 / Replies: 1022
Reply
RE: Heat pump efficiency v Outside Air Temperature

@mike-patrick @marzipan71 It must the be the time of year! I also did a similar analysis but using the COP obtained at different temperatures to co...

3 years ago
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RE: Need ASHP advice for old (1882) stable development in SW Scotland - where do I begin?

@heacol actually Acond use R290 instead of R32 but I don’t think that materially changes the point I am making. I am a scientist and so trust empir...

3 years ago
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RE: Need ASHP advice for old (1882) stable development in SW Scotland - where do I begin?

@heacol Brendon, I dont want to get into a disagreement with you and I have no problem with you looking for work on the forum but what you are suggest...

3 years ago
Reply
RE: Need ASHP advice for old (1882) stable development in SW Scotland - where do I begin?

@alan22 Dont despair Alan, your premise is sound. Be sure of your heater output (is it 3 kW) and use two if necessary. The experimental evidence will ...

3 years ago
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RE: Need ASHP advice for old (1882) stable development in SW Scotland - where do I begin?

@hughf I guess you just have to think of them as under floor heating on the wall! 😉

3 years ago
Reply
RE: Need ASHP advice for old (1882) stable development in SW Scotland - where do I begin?

@hughf Its also not that difficult to get SCOPs of greater than 5 in a well insulated new build with free radiator choice and low flow temperatures. (...

3 years ago
Reply
RE: Need ASHP advice for old (1882) stable development in SW Scotland - where do I begin?

@alan22 So given you have a 100mm kingspan envelope to the building, just using the very simplest estimator from heat geek. I would imagine you wo...

3 years ago
Reply
RE: Need ASHP advice for old (1882) stable development in SW Scotland - where do I begin?

@heacol I find that faintly patronising Brendon when you have no idea what my scop is.

3 years ago
Reply
RE: Need ASHP advice for old (1882) stable development in SW Scotland - where do I begin?

@alan22 Good experimental skills Alan 😆 What is the floor area of the barn?

3 years ago
Reply
RE: Heat pump size advice – is 16kW overkill for this property?

@iancalderbank very true Ian, that may be the reason but I take it you dont use the strategy either?

3 years ago
Reply
RE: Heat pump size advice – is 16kW overkill for this property?

@toodles Well I think the mode of operation is just the same, its just the frequency that is different. It makes sense to heat your water at night if ...

3 years ago
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