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cathodeRay
cathodeRay
@cathoderay
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Illustrious Member
Joined: Feb 28, 2022
Last seen: Sep 22, 2025
Profile Activity
Topics: 17 / Replies: 2164
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RE: Simulation of ASHP with Gas boiler as part of decision process

That sounds promising. Do you still have the heat loss/rad sizing calculations used to select your current rads? If you do, they may add some more inf...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Simulation of ASHP with Gas boiler as part of decision process

I strongly endorse this. Some of the quotes I had from various goons claiming to be heating engineers had hopelessly out of whack rad specs. For radia...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Simulation of ASHP with Gas boiler as part of decision process

I have a small old leaky listed building with limited wall space. As a very general rule of thumb, if you have correctly sized radiators for a fossil ...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My horrific Samsung heat pump installation and experience

I'm not sure they do. Take the first chart in your second to last post, this one: I take it this is what we conventionally call LWT, the tempe...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP - a few (probably dumb) questions about the lived experience

@jamespa - I owe much of my meagre but at the same time much improved understanding of the thermodynamic principles involved to your many generous con...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP - a few (probably dumb) questions about the lived experience

We have been here before, on the question of continuous vs intermittent heat pump running, and the effects on costs and comfort. My conclusions to dat...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My horrific Samsung heat pump installation and experience

@iantelescope - I think we need to clear up what we mean by cycling, and then short cycling. To me something that cycles is something that regularly m...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My horrific Samsung heat pump installation and experience

I did say earlier I wondered weather Samsung's obfuscated implementation of weather compensation meant it was easy to mix up OAT and Set LWT, and that...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My horrific Samsung heat pump installation and experience

I appreciate the Samsung jargon doesn't help, on one level it is upside down and/or inside out. I find it easier to think in the xx @ yy format, LWT a...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My horrific Samsung heat pump installation and experience

As an alternative to monitoring toe nail selenium levels, here is an example of the monitoring I have for my heat pump, done over modbus (which many h...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My horrific Samsung heat pump installation and experience

I found the above in one of Mr T's previous posts, from August this year, not the ideal time of year to set up weather compensation. Samsung don't mak...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My horrific Samsung heat pump installation and experience

This should have been accepted on page 1, not 'testing the idea' on page 76. The room stat should almost invariably not be used to control a heat pump...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Page 65 / 182
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