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Old_Scientist
@old_scientist
Member
Honorable Member
Joined: Jun 16, 2024
Last seen: Apr 26, 2026
Profile Activity
Topics: 6 / Replies: 399
AllTopicsReplies
Reply
RE: Sigenergy Battery Storage System

By way of comparison, the Tesla PW3 + Gateway offers full home backup and 13.5kW of fully usable battery capacity. It also has a flexible 11.04kW inve...

3 weeks ago
Forum
Energy Storage
Reply
RE: Sigenergy Battery Storage System

Their reviews are variable at best: I'd be dubious given the amount of time they have been around given their current track record. Tesla are a s...

3 weeks ago
Forum
Energy Storage
Reply
RE: 7.5kW Heat Loss, But Quoted a 10kW Midea. No Re-Pipe, No Buffer Tank. Does This Add Up?

Our house is not dissimilar to yours on paper. We had a heat loss calculation of around 7.4kW and previously used around 1600-1800L of oil per year, s...

3 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: DHW static losses

Thank you for correcting my units, but you may want to check your own as you seem to be 3 orders of magnitude out.  

4 weeks ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Renewables & Heat Pumps in the News

@editor Thanks. For reference, here is the statutory instrument laid before parliament, for those who like to read such things:   &nb...

4 weeks ago
Forum
Renewables News
Reply
RE: DHW static losses

My 160L Joule cylinder is rated at 79W, which I presume means 79W/h, so 1.896kW per day. I have no idea what temperature (delta) this is at, but obvio...

4 weeks ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Water cylinder for heat pump outside the house

My neighbour has his water cylinder (plant room) in a timber built lean-to shed on the side of the house, due to inside space limitations. The shed wa...

4 weeks ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: What is the lowest temperature you set your heat pump to?

It is simply not practical to set the flow temp to 20C for a desired room temp of 20C. The radiators (emitters) cannot emit heat into the room if th...

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: What is the lowest temperature you set your heat pump to?

Agreed, it's totally dependent on the emitters being able to dissipate the heat being produced. Imagine a very large concrete floor with large underfl...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Why One Strike on Iran’s Oil Infrastructure Undermines Every Heat Pump and Solar Array in Britain

I feel your frustration and anger. I try to lessen those feelings of anxiety by looking at how much we would now be paying for oil had we not ripped...

1 month ago
Forum
Well & Truly Off The Grid
Reply
RE: Who's your electricity provider and what's your tariff?

So you stayed on the variable (non-fixed) Cosy? I know you were considering the fixed Cosy variant when it came out.  

1 month ago
Forum
Electricity, Tariffs, Monitoring, Electrics & Providers
Reply
RE: Who's your electricity provider and what's your tariff?

Indeed, but I don't expect to import 3kW per day for the 3 month period April - June that this Ofgem pricing period runs for, so overall my bill will ...

1 month ago
Forum
Electricity, Tariffs, Monitoring, Electrics & Providers
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