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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: Jul 20, 2025
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Topics: 17 / Replies: 2064
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RE: Do setbacks save energy without compromising comfort?

Here's the data table from the actual chart: Don't forget I never claimed this chart was the answer to everything. In the paragraph immediately un...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

@scrchngwsl - a little more information, from the no setback period. I have calculated (using your code adapted for the no setback period) and plotted...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

I'm afraid I've lost you here. I have posted the complete data set for December 2023. I've just issued a prompt correction and apology for suggesting ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

@derek-m is correct, the data in the minute data file is raw as collected data without the correction, the calculated values in the hour data file hav...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

@scrchngwsl - I started by looking at the regression. As I through habit like to see plots, I have done (a) a scatter plot with the regression line, (...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

@scrchngwsl - very interesting, and very useful, to have an analysis done using a different approach that still nonetheless starts with the observed d...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

Covered in my recent post (I'm not sure, don't have enough detailed data, but on balance, it looks random, but I don't know for certain). If/when I ha...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

Will you please stop making insinuations that have no basis in fact. I have released all the all the raw/actual data for December in the zip file I po...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

@derek-m - broadly, I think you have got it, apart from this paragraph: I am not sure where that comes from or what it does. Boiled down to its...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

@iancalderbank - thanks - looking at the chart for days with minimal hot water use, it is almost always 10 degree drop per 24 hours, so I suppose with...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

I agree, it does seem high, and I get reminded every time I see the DHW tank temp chart. It's the fairly common I think Telford Tempest Heat Pump mode...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

Me too, but I fear it is a fact of life that modern DHW tanks aren't in fact that well insulated. Mine drops most days by about ten degrees, from 50 d...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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