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Old_Scientist

@old_scientist

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Joined: Jun 16, 2024
Last seen: Oct 12, 2025

Topics: 6 / Replies: 286

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RE: Determining correct flow rate?

That would be the more logical place to fit them, but ours is installed on the main return pipe back to the heat pump, so affects both DHW and heating...

1 year ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Determining correct flow rate?

@rhh2348 My system has a 50L volumiser fitted in the main 28mm return pipework, which at the end of the DWH cycle will also contain 50L of hot (55C) w...

1 year ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Determining correct flow rate?

This is exactly what I observe with my oversized Samsung when I run it in always on mode via the room stat calling for heat. If I set the WC curve t...

1 year ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Determining correct flow rate?

Optimising flow rate for DHW heating is something I'd been thinking about over the summer, as we are only heating DHW at that time. My simplistic th...

1 year ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Determining correct flow rate?

I don't I'm afraid - you could try looking up the specs of the Grundfos pumps online. My own system uses fixed flow rate Wilo pumps, with 3 differen...

1 year ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Determining correct flow rate?

Have a look at John Cantor's excellent online calculators here (specifically the flow rate calculator): Heat (kW) = Flowrate (Litres/sec.) x 4.2 ...

1 year ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Heat pump monitoring - what are you using?

@njt As the Cosy peak rate (4-7pm) immediately follows a cheap slot, your battery should be fully charged and at least should avoid importing during t...

1 year ago

Forum

Air Source Heat Pumps (ASHPs)

RE: COP or Cost Per kWh

Where I think COP is immensely useful is in giving a snapshot, either instantaneous or over time, of a system's performance, which can be useful in co...

1 year ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Heat pump monitoring - what are you using?

Hi @declan90 We are in an almost identical situation to you (except I'm staying on Agile for now). ASHP installed in June, so this will be our first...

1 year ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Heat pump monitoring - what are you using?

@bontwoody Thanks, that's the one and for other Samsung owners who may be interested I found loads more info here:

1 year ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Heat pump monitoring - what are you using?

Following this thread with much interest. @cathoderay I have a Samsung Gen6. I have an independent electricity meter showing ASHP usage. The numb...

1 year ago

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