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Old_Scientist
@old_scientist
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Joined: Jun 16, 2024
Last seen: Apr 24, 2025
Profile Activity
Topics: 5 / Replies: 146
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RE: ASHP Pipe sizes

Yes, you'll need two conduits, for flow and return pipes, separated by a couple inches I would think. Yes, you'll also need a conduit for electrical...

2 weeks ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Agile: average import cost vs other tariffs?

@toodles thanks for the analysis. I'll be really interested to hear how well Octopus manage the charging and discharging of the battery once things se...

2 weeks ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Agile: average import cost vs other tariffs?

@toodles Thank you for sharing that. I note you have a small amount of consumption at peak rate (7.1kWh). Were you expecting that, or is that Octopus...

2 weeks ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Agile: average import cost vs other tariffs?

@chandykris Yes, if you are able to last the day on solar/battery then Go is going to work out better than Cosy. Obviously the trick is timing the swi...

2 weeks ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Performance of Heat Pumps in Mild Weather

That's largely where I am, with a 12kW Samsung unit and on our coldest day last January with produced 96kWh of heat, so an implied heat loss of ~4kW. ...

2 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Solar Power Output – Let’s Compare Generation Figures

Right, got you.

2 weeks ago
Forum
Solar Photovoltaic (PV)
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RE: Solar Power Output – Let’s Compare Generation Figures

@transparent I have an Emlite ECA2 MID-approved meter fitted which records solar generation (available for around £40). The meter records slightly hig...

2 weeks ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Performance of Heat Pumps in Mild Weather

Agree with the above. Without knowing what the modulation curve of any given heat pump/compressor looks like, about all we can do is assume the manufa...

2 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Performance of Heat Pumps in Mild Weather

@heatgeek I have a very over-sized Samsung (12kW gen6, with a heat loss of maybe 4-5kW). We suffer with poor dT which struggles to get above 3C. Are y...

3 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: What happens when the outside temperature exceeds the upper WC point?

Yes, that's the default value, but can be set between 10C to 35C.

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: What happens when the outside temperature exceeds the upper WC point?

@bontwoody on my gen6 Samsung it's FSV #4013 Heating Off Temp, and by default is set to OAT of 35C (I have reduced mine to 25C). Like @ashp-bobba says...

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: What happens when the outside temperature exceeds the upper WC point?

I cannot speak for other manufacturers, but I know Samsung's WC 'curves' are very simplistic with just two set points with a straight line between, an...

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
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