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Last seen: Aug 23, 2026
If I may comment, from a pure physics standpoint, I think its pretty much certain that the temperature of the intake air (which I think is what @catho...
Thanks I've had a scan and think I possibly understand what they are saying, but can you summarise what conclusions you draw as you know better ...
There is nothing troublesome about the results or analysis per se if the only interest is in your system in the particular circumstances of the experi...
I have no idea how to account for this other than the obvious observation that it is likely to compromise hp performance. I'm not sure I'd describe...
I have no idea how to account for this other than the obvious observation that it is likely to compromise hp performance. I'm not sure I'd describe...
I think you missed the point. While the control period covers almost all the setback range of OAT, it a) has very few data points in much of that ra...
Interesting. It could be standing load or minimum possible output even with cycling (because it probably turns on every so often just to get a sense ...
Not really. The fact that the equation of best fit has a constant in it a fact, and without extrapolation it still means that the data points we actu...
I would have reached the same conclusion except that the scattergram of corrected IAT-OAT vs energy out (corrected for the thermal mass of the fabric)...
We are all doing this part time! Scatter plots of IAT vs heating energy out and IAT - OAT vs heating energy out suggest 8.5kW at -2/20 and with a va...
@derek-m @cathoderay OK, I think I may be getting some ideas, its by no means fully there but its going in the right direction, I think. I think...
@cathoderay @derek-m Health warning: This post doesn't contain any conclusions, just some more observations to trigger thought, pursuant to the overri...
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@tomtheheatingengineer, thank you, and welcome to the f...
By Mars , 43 minutes ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
@majordennisbloodnok @tomtheheatingengineer For my ...
By JamesPa , 1 hour ago
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
There is scope for product development here. I for one...
By JamesPa , 3 hours ago
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RE: Heat Geek mini store vs pump size
Hi Rob, For context I am Heat Geek installer, It has m...
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RE: Is the "divide by 2900" rule still valid?
Really flow rate is a pipework limitation not a water p...
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RE: The good, the bad and the not that great – my heat pump installation
@burtis, I’ve followed this thread pretty much from the...
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First time poster here but I can share my experience as...
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...which, I've found out, is pretty much impossible to ...
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Readers here please note that Derril Water and many oth...
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RE: Advice on Vaillant Sensocomfort
Oops, I meant Sensocomfort (the UI to the controls)
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