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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: Oct 19, 2026
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Topics: 18 / Replies: 3075
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RE: ÀSHP heat loss - how close to perfect can we get?

@jamespa - an interesting chart, it shows the method working for a large fossil fuel data set. I suspect if you cleaned up the data a bit, you might g...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: MCS 2.0 - Changes in January 2025

But in an elevator?

2 years ago
Forum
Government Schemes, Regulations, Training, Planning & Organisations
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RE: ÀSHP heat loss - how close to perfect can we get?

Which is why I have tried plotting 24 hour periods rather hourly periods, and sure enough the correlation does appear to be very good, remarkably good...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: ÀSHP heat loss - how close to perfect can we get?

@jamespa - you know I do! You can't have forgotten the many discussions we and others have had about it, some of which have got rather warm on occasio...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: ÀSHP heat loss - how close to perfect can we get?

Energy input (used, consumed) you have, it's what your meter says it is, and you just total it for each day (or subtract previous reading from current...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ÀSHP heat loss - how close to perfect can we get?

Given this, and the fact you seem to have a fairly good consensus based assessment of your total heat loss, can you do what I did, that is find a peri...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: ÀSHP heat loss - how close to perfect can we get?

My suggestion is the heating is always on (on the timer) during any heat loss assessment exercise, set to a constant IAT, the only on/off activity wil...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: ÀSHP heat loss - how close to perfect can we get?

@majordennisbloodnok - interesting questions that I don't know the answer to, but the thinking behind them is the same line of thinking I had when I w...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: ÀSHP heat loss - how close to perfect can we get?

Interesting (and a splodge is another example of what I recently called monkey plots). I wonder if the hourly plots fail because your system is very v...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: ÀSHP heat loss - how close to perfect can we get?

It means what it says, but if you want a rewording it might be 'not for the first time the data is messy (incomplete, haywire values at extreme ends o...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: ÀSHP heat loss - how close to perfect can we get?

Here we go again, messy data making monkey plots! What I have, and can and can't do: (1) minute by minute recorded data for all variables of interes...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ÀSHP heat loss - how close to perfect can we get?

@jamespa - thanks. I was reading something on that website as you posted on how degree days are calculated. It seems the preferred method integrates t...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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