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cathodeRay
cathodeRay
@cathoderay
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Illustrious Member
Joined: Feb 28, 2022
Last seen: Nov 20, 2025
Profile Activity
Topics: 17 / Replies: 2351
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Reply
RE: A Beginner's Guide to ASHP Monitoring

@batalto - they are invasive meters, and very pricey. The electricity in (in kWh) I can do from the blinking LED on my ASHP dedicated meter, the flow/...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Looking for reference sites and installer recommendations

Don't forget people are heat sources. If you had a number of house guests, you had a number of mobile radiators/convectors... Estimates vary as to how...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Looking for reference sites and installer recommendations

Empirical heat loss assessments, done of a cold design temp day, tend to get sniffed at these days, but in fact I think it may be one of the most accu...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: A Beginner's Guide to ASHP Monitoring

Thanks @robl, that's all very helpful. I have also been googling away, and it appears there are clamp on ultrasound flow meters, which solves the inte...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: A Beginner's Guide to ASHP Monitoring

For the record, I have just across this interesting page on flow rates, which also has a very useful flow rate calculator at the bottom for both water...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: A Beginner's Guide to ASHP Monitoring

@robl - thanks for the details. £8 per sensor is affordable, but given more standard flow meters cost hundreds of pounds, I would want to be sure the ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: A Beginner's Guide to ASHP Monitoring

Thank you all for your comments. A significant amount of my time is very pertinent, I have already spent many hours on this, which I am happy to do (i...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: A Beginner's Guide to ASHP Monitoring

Thank you all very much for your input. I think I am approaching the point where I am ready to start getting some hardware, and starting some monito...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Rate the quality of your heat pump design and installation

I've just tried temporarily increasing the warm end of the weather comp curve by ten degrees. Flow rate effectively remained unchanged, at 1.41 to 1.4...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Looking for reference sites and installer recommendations

I know that Evergreen and Homely are one and the same, what I wanted to be sure about is whether @jswhite's Evergreen are one and the same. I think we...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Looking for reference sites and installer recommendations

This is a huge factor these days, and heating, of rather lack of it because of unaffordability, is a health problem too. But there is no getting round...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Looking for reference sites and installer recommendations

I have to suggest that, while anecdotally there may be accounts that suggest this is the case, in fact it is a myth. We need to separate fact from f...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Page 168 / 198
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