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Derek M
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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: 4405
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Reply
RE: Do setbacks save energy without compromising comfort?

Yes, I fully understand noise when used in the electrical/electronic field, but I feel many of the forum members may find this term confusing when use...

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

I have no desire to get into a slanging match with you, since it would most likely be counter-productive. If, from time to time, I refer to some of ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Optimising ecodan ASHP

Because of the way a heat pump works, lower Energy In does not always equate to lower Energy Out. A heat pump 'harvests' most of the thermal energy ...

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

I am sorry that you appear to have misinterpreted what was meant to be friendly, helpful, advice, as a personal attack on yourself. I am a firm beli...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Optimising ecodan ASHP

Just like a car engine has a minimum 'tick-over' speed, a heat pump has a minimum thermal energy output, below which it cannot modulate down any furth...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Optimising ecodan ASHP

The heat pump is being stopped because the thermal energy output being produced, is greater than the minimum value possible under the present operatin...

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

@jamespa Well done James, I could not have said it better myself.

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

There are possibly two likely answers, or even a combination of both. I think it has already been established that the OAT sensor is reading low by ...

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

Both DT and flowrate can be difficult to measure accurately, particularly flow, where improved accuracy normally equates to more expensive. Temperatur...

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

There is normally notes attached to the data tables to indicate if defrosting cycles have been incorporated in the results. Unfortunately your heat pu...

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

Don't forget, the DT values supplied are integers, but I doubt that they are in the real World. Since heat pumps like to operate at a nominal DT of 5C...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Our Grant Aerona R32 13kW ASHP installation

Have you asked 'Diddly Squat' if he also does heat pumps? 😋

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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