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Last seen: Sep 7, 2026
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...
I get the general principle. My contention is that you need to sample often enough to get true average, since infrequent sampling may miss observation...
@rob-of-york — thanks again for posting in such such comprehensive and comprehensible detail, you are a great asset to the forum! I think the pro...
I suspect most if not all of the tank level measuring systems available will have been developed to tell the owner when they need to fill up their tan...
It's an enticing idea, but the problem is knowing the oil usage over the reference period to sufficient accuracy. All I had was a sight gauge on the s...
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Degrees of Separation
Latest Posts
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RE: Where heat loss surveys seem to go against practical reality
@cathoderay If the heat pump occasionally over produc...
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There arent many of these hitachi pumps around here so ...
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RE: Being screwed over by Volkswagen Audi Group
Thanks, @batpred. That integration is the one I have in...
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RE: How Accurate Is My DIY Heat Loss Calculation?
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RE: Surface mount or bury primaries for heat pump installation?
@jamespa It's rusting 🙂
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Thank you, once again, for your replies. Yes...
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It’s been out a few days and Amazon has already attache...
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