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cathodeRay
cathodeRay
@cathoderay
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Illustrious Member
Joined: Feb 28, 2022
Last seen: Sep 11, 2025
Profile Activity
Topics: 17 / Replies: 2129
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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)
Reply
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)
Reply
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
Forum
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)
Reply
RE: Do setbacks save energy without compromising comfort?

On a positive note, something of a breakthrough on the energy in calculations, and the need for a 1.18 correction factor. Against expectations based o...

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

I do understand, and your thoughts are also very much in my mind. I have tried to operate restraint, but in my defence, I do have to say that within...

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

Well, that's all good then, it means you understand the effect you have on people. But I still don't understand why you don't want to verify (or oth...

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

Given your low confidence in and derision for my data, my calculations, my charting and my interpretations, I think it is best if I give you the raw d...

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

This is an extremely interesting idea, and the fitting of computer fans is well within my DIY capabilities. Being low voltage, they would be easy to s...

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

I've already done that, it's in the December data I posted yesterday. You will need to do the regression, using only non-setback days, but that's no b...

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

Again, this is the wrong question. The short answer is that it doesn't cause the IAT to rise because the 'predicted none setback scenario' never actua...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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