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Last seen: Dec 18, 2022
@cathoderay Problem at the moment IMHO is that there are precious few good installers and too many double glazing salesmen. And they must be MCS cert...
@derek-m Perhaps it’s me, now I have had a play with your spreadsheet, but if I reduce the DeltaT water temp to 30C the output falls off a cliff to 21...
@derek-m thx for that. I’ll apply those equations to my radiator table. Meanwhile just putting in my total radiator output and my heat loss gives me a...
@cathoderay the kitchen and lounge have 2 rads but 1 heat loss and all the numbers stack up. I have 2 spreadsheets for heat loss so I am making sure...
@derek-m I'll look at the data and get a representation and yes - its a WB 42CDi so 92%
@cathoderay so I have done as you suggest. Heat Loss Q with a DeltaT of 30C (-5C to 25C) my whole envelope heat loss came to 5400w and room by room ...
@derek-m EDF installed smart meters a year ago so I could do just that. Despite revisits the gas meter never worked and apparently won't until they co...
@cathoderay thx, I'll give that a go later - could be interesting.
@transparent you want weather data? I can give 3 years of history and real time from a Davis VP+ station data and graphs e.g.. Solar thermal isn't...
@julianc Hi, our boiler temp has always been set at around 50C and it heats the house just fine. It only goes above that if there has been HW demand.
@transparent - Thx. I have just made a detailed post to the ASHP section here. I do have a recent EPC but of course that tells you nothing. I did a ...
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Degrees of Separation
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 , 4 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 , 9 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 , 14 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
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