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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Sep 18, 2025
Profile Activity
Topics: 17 / Replies: 2872
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RE: Do setbacks save energy without compromising comfort?

My reading is this (others may disagree) There are currently no experimental results from which we can deduce any conclusions applicable generally, ...

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

@cathoderay Well they are interesting! The third period, when the heat pump was actually running, appears to show relatively little temperature ...

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

Thanks. So to check my understanding (please confirm if I have got it correct!): the modelled LWT is adjusted from its default value (set by an assum...

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

Sorry but you aren't looking at the data correctly, you need to multiply temp by time. To achieve the claimed 20% saving overall (and using the 10% ...

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

Its not the methodology, its the observations. There is as yet no explanation of how, during setback, you can (apparently) put ~20% less energy into ...

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

Can you elaborate on the second of these, Im not sure what the 'offset' is and where it is applied and what you define as 'correct'? Also what d...

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

I never said it did or that you did. All I did was comment on the utility of the data in relation to the question in the prevailing circumstance, nam...

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

I did indeed, and its still my view, but I had in mind a reasonably well adjusted system. In retrospect my thinking was a little muddled (perhaps I w...

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

Thanks, I will take some time to study them.

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

If I may comment, from a pure physics standpoint, I think its pretty much certain that the temperature of the intake air (which I think is what @catho...

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

Thanks I've had a scan and think I possibly understand what they are saying, but can you summarise what conclusions you draw as you know better ...

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

There is nothing troublesome about the results or analysis per se if the only interest is in your system in the particular circumstances of the experi...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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