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Last seen: Nov 12, 2026
Yes and Yes. Conservation of energy must eventually apply, but may take a long while for equilibrium to be re-attained, and my suspiscion is that in ...
The '10%' refers to the change in deltaT between IAT (20C->19C) and OAT (10C). House loss (which is how the '10%' is being used) is proportional ...
Provided the 'control' period from which these were derived is representative of the test period I would agree. If any changes have been made to the ...
Dare I say 'builders innit' (i think that's the appropriate slang - but its not my specialist subject!). The electrical institutions, in fairness, h...
True (which is one reason I advocate it for pump sizing), but it doesn't support extrapolation to other scenarios (ie houses) unless you have enough e...
The conclusion is right but just to correct the units - you have a 10kWh battery and it charges at about 2.1kW. Think of kW like speed and kWh like ...
You could well be right. I didn't look into it that far because I fail Octopus Intelligent Go at the first hurdle. Although I have an EV its only co...
I don't think so and hope not. I grant that heating, while fundamentally simple, is actually rather complex. However there is, in principle, a vast ...
All agreed, with the possible comment that theoretical models are (currently) invariably based on well adjusted/designed heat pump systems, and we kno...
Thanks for this its always good to have some real numbers. In terms of judging payback I don't personally put ASHP and batteries in the same category...
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Degrees of Separation
Latest Posts
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Should I change my cylinder when changing from a gas boiler to a heat pump.
I have 178 L Gledhill unvented cylinder which was fitte...
By David , 6 hours ago
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RE: Plug and play solar. Thoughts?
Impressions so far from the one I've installed are that...
By EtchedPixels , 7 hours ago
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@batpred The Daikin temperature probe protrudes from th...
By Toodles , 11 hours ago
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
@editor And as an occasional contributor, may I say wel...
By Toodles , 13 hours ago
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RE: Should Households Who Can Afford It Pay More for Energy to Help Those Who Can't?
They don't have to try. Our entire system is d...
By EtchedPixels , 13 hours ago
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RE: Why don't people choose heat pumps?
Fair enough. I guess I was thinking of pipes that run ...
By JamesPa , 13 hours ago
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RE: How Can I Prove Coal Was My Main Heating Source Without Receipts?
Got excepted for the grant now so thanks for the replie...
By Chilli304 , 17 hours ago
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Daikin Altherma 3 R F+W, room thermostat control, weath...
By JanHarley , 18 hours ago
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RE: Buffer tank on a 2 x 14kw Ecodan system
Pretty much as I had guessed in my crude scaling from m...
By JamesPa , 21 hours ago
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RE: Help me keep the faith with my air source heat pump installation
Well you have a vibration generator running at some fre...
By bobflux , 1 day ago
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RE: Who's your electricity provider and what's your tariff?
@downfield Thats a decent rate, I’m shocked they hadn...
By Papahuhu , 2 days ago
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RE: Adventures in heat loss calculations
@toodles thanks! So as suspected, around a doubling of ...
By SusannaSaunders , 3 days ago
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Six books in three years and I think I’ve now covered j...
By Mars , 3 days ago
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