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Derek M
@derek-m
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Joined: Mar 4, 2021
Last seen: Sep 19, 2024
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Topics: 7 / Replies: 4403
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RE: Effect of Buffer tank or Volumiser

You are basically correct in what you state. A buffer tank may cause lower efficiency due to mixing unless the water flowrate both in and out is kep...

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

@jamespa Having now answered the first part of the original question, that setbacks do appear to save energy, how do you propose that the second par...

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

Please feel free to ignore all my post.

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

@jamespa If my understanding is correct, I think that you will find that the modeling tool performs the task that is being requested, since it calcu...

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

Hi James, There is a relationship between OAT and Energy In, but it is not as clear as the relationship between OAT and Energy Oat. The relationsh...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Hot water tanks with inbuilt ASHP !

I suppose it depends upon the size of your solar PV array and the quantity of hot water used. The diverter, as the name suggests, only diverts the e...

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

@jamespa I had arrived at similar conclusions so time ago. Please find attached a table that I also produced some time ago to investigate the effe...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: balance or not to the radiators?

@toodles I think that you may find that even when fully open, the valve internals will have a smaller diameter than the attached pipework. Also radi...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Hot water tanks with inbuilt ASHP !

In the Stiebel manual there is mention of an Oil Sump Heater, which may be using some of the 200W, though it would be be best to ask Stiebel and/or yo...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: balance or not to the radiators?

I believe that some heat pump try to maintain a fairly constant DT, by varying the water flow rate, while other keep a fairly constant water flow rate...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: balance or not to the radiators?

You are obviously already aware that for best overall efficiency, water should flow through the maximum heat emitter capacity. It is very unlikely t...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: balance or not to the radiators?

I would suggest that you leave the system as it is for the time being, but monitor the temperature in each room. If any particular room starts getting...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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