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Last seen: Nov 3, 2026
It is always a good idea to quote sources, some might say it is essential. This time Wattson did get the answer, and it turns out that it is our very ...
Can you post your mathematics and all the data you used? Even things like how you ran the oil heating eg always on or timed? Was the indoor air temper...
@ian33a — a tricky one. Any or all of your hunches may be correct. Can you get the raw data Installers B and C used for their fabric heat losses, and ...
A very good point. In effect, the DHW pipework is an emitter, and very likely not a trivial one, given the figures @jon has previously posted. Maybe w...
@jon — thanks for posting the revised chart, I hope you agree it looks cleaner, and so also less confusing, with same sized blobs. It goes without s...
@jamespa — this chart is indeed suspect, it suggests the energy delivered at low OATs flat lines, which is highly unlikely - unless perhaps some sort ...
@jon — I think you may already have a good estimate of the heat loss, and it is in, or rather can be derived from, this chart: F...
A bit more on ERA5 gridding: This is the size (but not as I understand it the boundaries, the lines are actual lat/long and the ...
Yes, I got that, but it also has dispersed data. Suppose you live in Guildford, which weather station do you use, and how much credibility do you give...
Yes, but @jon used ERA5 data, which is based on NWP modelling. I'm not sure we know how well the modelled outside air temperature (OAT) corresponded ...
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