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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: Sep 11, 2025
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Topics: 17 / Replies: 2129
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Reply
RE: Installing a heat pump in a Grade II listed property

I do already have a lot of data. Since late March 2023, I have been collecting data at minute intervals for all of the variables you mention, apart fr...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Installing a heat pump in a Grade II listed property

Thank you, it is. Your second paragraph also covers something I had been thinking about as well, the situation where a true but small inter-sample dif...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Installing a heat pump in a Grade II listed property

I wasn't looking for correlation, just gross eyeball differences between SB and no SB running. As I said, I can't think of any other way of presenting...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Installing a heat pump in a Grade II listed property

At least the ceiling got plastered, not me! Make of this quick and dirty analysis what you will. Actually, it wasn't that quick, because it involved...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Installing a heat pump in a Grade II listed property

@jamespa - thanks, will get back to this later, I am about to get stuck in to some ceiling repairs!

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Installing a heat pump in a Grade II listed property

It does vary. Here is the chart again: On this chart it is more often 2-3 degrees. You can also the the warming caused by the heat pump turning of...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Installing a heat pump in a Grade II listed property

It was probably me, but I think it also applies to many if not most heat pumps, because the immediate environment, specifically the air temperature, i...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Installing a heat pump in a Grade II listed property

Sorry, I hope it is all there, but I didn't explain it well. Starting with your IAT/OAT delta t values (19/10 to 16/10 for 6 hours etc), instead of ...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Installing a heat pump in a Grade II listed property

The AUC calculations I did were for the whole week, with hourly intervals. I think the idea that daily setbacks put the whole in a 'different place'...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Installing a heat pump in a Grade II listed property

Another thought has occurred to me. Maybe the monolithic house, once it is up to temperature, is such a huge heat (energy) store that you can turn off...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Installing a heat pump in a Grade II listed property

I deliberately used the regression equation from test week, so they should be representative. The average IAT did change over the period, but only sli...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Installing a heat pump in a Grade II listed property

I do quite a lot of sailing, which is why I am interested in forecast accuracy, particularly for wind speed and direction, but also for visibility, he...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
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