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JamesPa
@jamespa
Contributor
Noble Member
5018 kWhs
Joined: Apr 3, 2023
Last seen: Jul 26, 2024
Profile Activity
Topics: 6 / Replies: 778
AllTopicsReplies
Reply
RE: Advice on ASHP choice needed

Fair enough and I agree that a closed staircase would reduce hot air rising, although I suspect that convection downstairs together with transmission ...

5 days ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Advice on ASHP choice needed

Houses used to have almost no insulation, so compartmentalising made a big difference. For well insulated houses the difference is smaller, because t...

6 days ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Two possible heat pump routes - how to evaluate them?

No. You need exactly the same amount of watts which is determined by (in fact must match) the house heat loss. What changes is that you need bigger...

1 week ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Two possible heat pump routes - how to evaluate them?

@lucia There are too many delta ts in heating so it gets confusing As @derek-m says the delta t that matters for rad output is the delta t b...

2 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Two possible heat pump routes - how to evaluate them?

What are you comparing? Watts depends on flow temperature. So a 1kW radiator at ,70C becomes a 400W radiator at 45C

2 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Lower electric tariffs for heat pump users

Indeed so. I am told by a reliable source (someone who was working on the software) that the smart meter 'back end' infrastructure is being substanti...

2 weeks ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Lower electric tariffs for heat pump users

Time of use is the one which makes economic sense, its a way to balance the grid load thus reducing the infrastructure build needed to electrify the c...

2 weeks ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Lower electric tariffs for heat pump users

Indeed. Its fundamentally a ToU tariff designed to do some grid balancing, but tweaked to make it useful for a particular purpose. Makes sense. If ...

2 weeks ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Lower electric tariffs for heat pump users

I thought so, I asked because @gary above quotes suggests that octopus cosy is an existing example, but it isn't its a ToU tariff marketed for heat pu...

2 weeks ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Lower electric tariffs for heat pump users

By 'heat pump tariff' do you mean a tariff specifically for the energy used by your heat pump (lie OVO offer) or something like Octopus Cosy which is ...

2 weeks ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Are Octopuses Slowing Consumer Adoption of Heat Pumps?

I can sort of agree, but its an imprecise line. Perhaps the distinction is to avoid 'party politics' (ie express criticism or support of one particul...

3 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Two possible heat pump routes - how to evaluate them?

That all makes sense. Many heat pumps have, I believe, a parameter which allows you to adjust the min cycle time (typically, it seems, set to 10min...

3 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
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