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Last seen: Oct 4, 2026
@cathoderay and others. I think there may be some confusion over the contributions from external sources creeping in. They may be a variable propor...
@rob-of-york I think this a very reasonable way to approach the problem. Whilst I dont like determining things based on a single measurement point ...
@cathoderay Good bit of analysis. Daily would suffice for consumption (as you say more frequently is needed for temperature); my main tool...
I am amazed that there is not something out there to measure depth, either by float or laser. I can buy a laser distance meter for £30, it wouldn't t...
Take a guess, do the head loss calculations at the flow rate for DT 5. If it's ok with some margin, stop worrying about head loss. If this is the c...
I would too if it were easy, but he says it isn't. In that circumstance I would probably 'suck it and see.'. Assuming the circulator head is suffic...
... which hopefully you don't have to do if there is a reasonable amount of headroom! But if there isn't then fun awaits I would be willing to b...
Absolutely, due to a combination of genuine unknowns (eg air change rate, effect of thermal bridging and even uncertainty in U values of certain mater...
Our posts crossed and I have added some more explanation/clarification In answer to your comment - no you dont know where in the range it lies, and ...
Its not perfect but the world isnt perfect . If one were to set up a controlled experiment with comprehensive logging that would be better than any o...
Yes from first principles. The temperature profile in any given location is well known and fairly consistent (averaged over a season) from year to y...
To clarify - the generally accepted divisor for SE England is ~2900 which is scientifically derived from a degree day calculation based on the SE UK t...
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