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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Nov 15, 2025
Profile Activity
Topics: 18 / Replies: 3379
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Reply
RE: MCS 2.0 - Changes in January 2025

The elevator reached the level at which I had to get out, so I missed my opportunity to impress the CEO.

1 year ago
Forum
Government Schemes, Regulations, Planning & Organisations
Reply
RE: ÀSHP heat loss - how close to perfect can we get?

OK so I have been giving some thought to a possible gold standard test that can be performed on a house outside a controlled environment. It co...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: MCS 2.0 - Changes in January 2025

Scrap them entirely would be my vote. Let those in the industry that deliver for their customers rise naturally, and those that rely on MCS to cover ...

1 year ago
Forum
Government Schemes, Regulations, Planning & Organisations
Reply
RE: MCS 2.0 - Changes in January 2025

Sorry I got to 1min 14 seconds and gave up. Disorganised, self indulgent, amateur cr*p up to that point, nothing to encourage me to listen to another...

1 year ago
Forum
Government Schemes, Regulations, Planning & Organisations
Reply
RE: ÀSHP heat loss - how close to perfect can we get?

It matters. Averaged over a sufficient time period what you say is absolutely true - its the first law of Thermodynamics! However you were apparen...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ÀSHP heat loss - how close to perfect can we get?

Agreed According to your profile you have an ashp, presumably operating weather compensation. This being the case I would expect a much better corr...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Business case for a battery?

Yes sorry £1 per day is what I meant. 1K per kWh is a figure I have seen quoted more than once for a 'professional' install. £160 per kWh changes t...

1 year ago
Forum
Energy Storage
Topic
Business case for a battery?
1 year ago
Forum
Energy Storage
Replies: 42
Views: 5119
Reply
RE: ÀSHP heat loss - how close to perfect can we get?

Emissivity certainly comes into it but is not strictly the whole story - because radiators aren't predominantly radiators, they are predominantly conv...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ÀSHP heat loss - how close to perfect can we get?

Yes with reservations. If the house cools materially during the 'off' period then the average IAT will be lower than the 'target' IAT and so the amou...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ÀSHP heat loss - how close to perfect can we get?

No. The amount of heat lost/gained by conduction/convection will be dependent on the surface roughness and the nature of the medium in which it is im...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ÀSHP heat loss - how close to perfect can we get?

@judith , @larry , @cathoderay Collecting the above together with my comments and those from @cathoderay A room by room fabric spreadshe...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Page 194 / 284
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