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cathodeRay
cathodeRay
@cathoderay
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Illustrious Member
Joined: Feb 28, 2022
Last seen: Sep 12, 2025
Profile Activity
Topics: 17 / Replies: 2131
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RE: Do setbacks save energy without compromising comfort?

There are some rather odd things going on! The long post I have just posted (I think) still remains as a draft, despite having clicked ADD REPLY, so I...

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

When a specific ratio mysteriously reappears something is usually not right! Now i think I might know what it is, and it is the old gremlin of having ...

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

@derek-m - it's in the post (and is repeated in a reply to @jamespa I am about to post). In short, it is the equation given by the spreadsheet for the...

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

I agree, but at the moment the results are quite far apart. That is what we have to reconcile. One method is over-correcting, or the other is under-co...

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

I haven't forgotten there is at least one other way to approach this problem: compare the observed energy use during a setback with the expected energ...

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

@jamespa - perhaps more importantly, recall that we are using a corrected energy in, the 1.18 correction factor that (on average) brings the calculate...

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

(a) this is in fact something of an unknown. The external kWh meter reads all energy going in to the heat pump, and as both circulating pumps are supp...

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

@jamespa is using my data, meaning I can explain how the setbacks are done, and the other factors involved: (1) my system is always on weather compe...

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

I agree, and I hope you will agree that this is what beneficial collaboration can achieve, which I think it is fair to say is still happening here, de...

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

@jamespa - I have no doubt at all in my mind that you are a fair and good-natured person, based on what I have seen on this forum. You have also genui...

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

No one likes being told they come across as being patronising and arrogant, all the more so if they really are that way. I wrote that earlier remark (...

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

There is a difference between what in medicine we call clinical significance and statistical significance (which is boils down to a test of how likely...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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