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Last seen: Sep 8, 2026
@rob-of-york — I have total energy delivered plus separate space and DHW heating values so can do the analysis either way. However, since we call the ...
OK, this one is fairly easy, because most of what is needed is in a 24 hour data file (logs past 24 hour values every hour on the hour): ...
I could but I would like to try to find a more generic solution, working on it now!
One bit of data processing that I do may be relevant. The space and DHW energy values are separated out (by way of the position of the diverter valve,...
I haven't been able to find a period when the heating was on, and the OAT was definitely above the IAT, but I have found a six hour period when the OA...
It's not there because it is January data (was clear in original posting of the plot, but should have added that to the title). I'm currently looking ...
I think there may be some clues here that point to the weather compensation curve being at least in part responsible for what we see happening. This i...
I agree, the plots suggest this, but it can't be what happens on the ground, or can it? My OAT plots show data points in the high OAT range (when pres...
The 320 kWh total for all January was C29-C31 in your Practical Heat Loss Calculation spreadsheet, after I had entered my values in the relevant cells...
OK, here is the IAT - OAT (degree-hours because the intervals are one hour) variant of the plot: The intercepts show a different...
This is the point that I was getting at earlier, when you measure the heat delivered to the house by the primary heat source, the number you get is (a...
@rob-of-york — thanks again for a clear helpful explanation. If I can summarise, I think the key point is that the heat from other sources stays prett...
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