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Last seen: Nov 25, 2023
I suppose another incentive for A2A is in a move away from the central heating idea of heating all rooms that could conceivably be used during the day...
@mjr Ah yes, the 25kW boiler they installed in my 100 m2 home when the daily average power never exceeded 3kW during this recent cold snap. I d...
The performance of DFS was covered during a talk from ESO. The slides are here.
I'd add that air temperature is not the only determinant of thermal comfort in a room. A major component of the perception of cold is radiative loss ...
@alec-morrow A room and its contents has a given thermal content at given temperature. When it cools, it's because it loses heat to the exterior thro...
@cathoderay Wouldn't the extent of replacement depend on whether they are moving onto the original ASHPs or the new higher temperature ASHPs being rel...
I have participated in 3 of the Demand Flexibility tests run through E.On now, two of an hour each and one of two hours. The percentage reduction the...
@cathoderay There's some serious problem with the temp measurements. Touch will also readily distinguish temps around blood heat which is what your r...
@andris Not for Ovo. But the Octopus link I supplied earlier appears to suggest they look at your reduction relative to your average at those 2 hour ...
@andris Did you look at the link on "summary"? For example, with Ovo, they want you to reduce your energy consumed during the peak period to <12.5...
@derek-m If this is the constraint, there are two ways in which it can happen:, because the PHE heat transfer is limiting or secondary flow rate is li...
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Latest Posts
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RE: Where heat loss surveys seem to go against practical reality
I am amazed that there is not something out there to me...
By JamesPa , 2 hours ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
@bobflux The hydraulic simulator is very interesting...
By Rob of York , 7 hours ago
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RE: 7kW EV Charger Options Advice
Thanks. Yes, we have patchy 4G. The only option we had ...
By Rusty , 13 hours ago
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RE: Being screwed over by Volkswagen Audi Group
Thanks, @batpred. That integration is the one I have in...
By Majordennisbloodnok , 1 day ago
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RE: How Accurate Is My DIY Heat Loss Calculation?
@batpred I suspect it will be more this year. I had 9 ...
By AndrewJ , 1 day ago
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RE: Surface mount or bury primaries for heat pump installation?
@jamespa It's rusting 🙂
By tomasmcguinness , 1 day ago
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RE: Glass lined Cylinder for private water supply
Thank you, once again, for your replies. Yes...
By ian33a , 1 day ago
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It’s been out a few days and Amazon has already attache...
By Mars , 1 day ago
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RE: Missing flow temperature in Heat Geek proposal
Yes, and this is another point I agree. We did find a f...
By Batpred , 2 days ago
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RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
A very good point. In effect, the DHW pipework is an em...
By cathodeRay , 2 days ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@tim441 Here are those same three month periods for 202...
By Toodles , 4 days ago
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RE: Adding additional Solar Panels to a DC coupled battery system
@transparent thank you for your reply above. As alway...
By Old_Scientist , 5 days ago
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RE: Adventures in heat loss calculations
@rob-of-york — thanks for posting this, all very useful...
By cathodeRay , 6 days ago



