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JamesPa
@jamespa
Moderator
Illustrious Member
Joined: Apr 3, 2023
Last seen: Sep 14, 2025
Topics: 17 / Replies: 2844
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RE: ÀSHP heat loss - how close to perfect can we get?

A bit of a moot point as this is now into hand waving territory, but I had in mind +/-10%. Thinking at the next level of detail, if I had a determin...

11 months ago
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RE: ÀSHP heat loss - how close to perfect can we get?

All agreed except possibly the last sentence. I don't think its as simple as a constant lag because the fabric isnt monolithic. However certainly I ...

11 months ago
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RE: ÀSHP heat loss - how close to perfect can we get?

Its a very good question and one I pose above. As I say above it does depend on the actual circumstance and what design decisions may be triggered/de...

11 months ago
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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.

11 months ago
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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...

11 months ago
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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 ...

11 months ago
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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...

11 months ago
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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...

11 months ago
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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...

11 months ago
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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...

11 months ago
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Replies: 42
Views: 4105
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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...

11 months ago
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