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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: Nov 14, 2025
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Topics: 17 / Replies: 2348
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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...

1 year 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...

1 year 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...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
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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...

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

@jamespa - we cross posted. I think there is a fundamental flaw in my suggested approach as described above, most people don't have access to the data...

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

And of course I can do this, measure energy out, but only because I have the data I do. Since most people don't have access to this data for their hea...

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

That is exactly what I have been doing, since early last year (late March)! On my standard chart, which is based on minute by minute data, you can see...

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

@majordennisbloodnok - as you well know, the general view here is the only dumb question is the unasked one. I too have thought about what measure...

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

Juxtaposing those two could lead to interesting results... Seriously though, I think the following, which are not a million miles at all from your s...

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

In fairness, I didn't say he said whatiffery fails, it is me who said whatiffery fails. I am deliberately plugging this point because as frequent read...

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

In fairness, this is what I have been saying for some considerable time. It is why whatiffery fails. Using crass numbers eg stone wall U values doesn'...

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

I have noticed that as well as solar gain, my house also gets wind chill on wet windy days, especially if the wind is in the wrong quarter. Yet, so fa...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
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