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Derek M
@derek-m
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Illustrious Member
Joined: Mar 4, 2021
Last seen: Sep 19, 2024
Profile Activity
Topics: 7 / Replies: 4403
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Reply
RE: Do setbacks save energy without compromising comfort?

I fully agree with the assessment by James, home heating is a complex subject. Not because the Physics are particularly difficult, but because of the ...

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

@cathoderay To be honest I was not going to spend any further time analyzing the data from your system, but your comments about your particularly ba...

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

I would suggest repeating the test with a more reliable method of measuring the temperature, since if the readings were taken at 20 second intervals, ...

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

Yes, you are correct. Whilst it is not what I believe happens in the real World, in CathodeRay's system he already has his version of AA mode varying ...

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

CathodeRay's data provides the OAT and the IAT at hourly intervals. The model needs to adjust the energy output to represent what the heat pump contro...

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

James, I think that you pointed out some time ago that it is the heat emitters, along with the heat loss, that dictate the required thermal energy out...

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

Hi James. The raw data is the hourly records provided by CathodeRay recently, I think that you have been working with a copy. I took the data on f...

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

You are perfectly correct, it does not matter. Well not to me, anyway.

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

@cathoderay But what happens if the OAT reading varies from 0C to 3C deviation with heat pump loading?

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

@jamespa Attached is a copy of the test results from the raw data for the period 5th November 2023 to 20th November 2023. I don't see any point in...

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

@cathoderay I don't follow your logic. You expect to use the OAT reading to predict the Energy In to your heat pump, but this OAT reading would appe...

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

@jamespa I suspect that some of the wider variation in OAT during the setback data, is probably due to the heat pump being stopped for a lengthy per...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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