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SUNandAIR
SUNandAIR
@sunandair
Member
Noble Member
3387 kWhs
Joined: Dec 30, 2022
Last seen: Mar 10, 2025
Profile Activity
Topics: 5 / Replies: 457
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Reply
RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

james you appear to be sighting an example which I have never said. I have never asserted this statement so I don’t see why you are saying it. Abov...

4 weeks ago
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Air Source Heat Pumps (ASHPs)
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RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

@jamespa apologies James I’m on a train so dashing between platforms

4 weeks ago
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Air Source Heat Pumps (ASHPs)
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RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

@heatgeek I wouldn't normally comment on such a varied emitter scheme. I think I’m just trying to establish a few principles of HP operation in a simp...

4 weeks ago
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Air Source Heat Pumps (ASHPs)
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RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

My first thoughts are that the process is more dynamic than your model suggests. Your idea that demand is determined by the house isn’t quite how I se...

4 weeks ago
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Air Source Heat Pumps (ASHPs)
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RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

hi @jamespa Thanks for your reply. Thinking I can see a pretty good analogy and I will post it in the morning. 👍

4 weeks ago
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Air Source Heat Pumps (ASHPs)
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RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

Yes I think That’s quoted quite a lot if I’m getting your ratio of 3 correctly. The problem is, like all rule of thumb approximations is that that man...

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

My original post was as follows….

4 weeks ago
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Air Source Heat Pumps (ASHPs)
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RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

Thanks for the nod James Hopefully my hand drawn “spreadsheets” are working now…. and the more detailed spreadsheet….. I hope the numbers are ...

4 weeks ago
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Air Source Heat Pumps (ASHPs)
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RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

Thanks for the official documentation info @transparent . I hadn’t read the most recent offering…. Is it me or does it really avoid tying anything dow...

4 weeks ago
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Air Source Heat Pumps (ASHPs)
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RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

not sure I agree… most of the sizing issues can be done at the design stage as a calc exercise. And as you and I have discussed previously… the design...

4 weeks ago
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Air Source Heat Pumps (ASHPs)
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RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

With due regard for the title of this topic… This debate has been brewing for quite a few weeks now. It certainly asks some questions of the standar...

4 weeks ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan 6kW - is it "cycling", or normal operation?

@clockworks while your sorting your wireless controller I have time to write a post on your rad capacity and the correct maths for sizing. So maybe l...

1 month ago
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Air Source Heat Pumps (ASHPs)
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