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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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RE: High air source heat pump running costs – Vaillant AroTherm Plus

@colin I find it strange that you would have both glycol and dump valves installed.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: High air source heat pump running costs – Vaillant AroTherm Plus

@colin Useful data that shows the difference in efficiency and the effect of running the legionalla cycle. If you don't already have it, have you ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Anyone want to share costs on batteries?

@transparent Have you not heard, the pound crashing is of little or no consequence.

3 years ago
Forum
Energy Storage
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RE: Ecodan/heating changes for higher COP

@mjr All your points taken. Without knowing exactly how the internal software is programmed and how it is supposed to function, it is difficult to g...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan/heating changes for higher COP

@mjr As a Control Systems Engineer, I have often wondered how controllers utilising Auto Adaptation would cope with not only the varying operating c...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Xlinks and other strategies to achieve nett zero

@transparent You could define them as NGT, NGE and NGD.

3 years ago
Forum
Electricity, Tariffs, Monitoring & Providers
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RE: Scottish power blocking install

@editor I do believe that both National Grid and the DNO's are gradually in the process of upgrading the electricity distribution systems, but you m...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Scottish power blocking install

@waylander Did your installer carry out a heat loss calculation detailing the before and after improved insulation?

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Scottish power blocking install

@waylander I'm rather surprised that your installer did not mention this requirement when they selected a 13kW heat pump. Do they actually know what...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Scottish power blocking install

@waylander The other thing that I forgot to mention. Since you are having additional insulation installed, do you actually require a 13kW ASHP?

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Scottish power blocking install

An electric induction motor starting in Direct On Line (DOL) draws about 3 times its normal operating current for a brief period of time until it gets...

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

@boblochinver I have been looking at the technical specification on the Dimplex website and the earliest document is dated 2020, also the refrigeran...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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