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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: Oct 24, 2026
Topics: 18 / Replies: 3076
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RE: Does your heat pump calculate and provide you with a COP figure?

That is extremely interesting. I was hoping to do something similar with the Midea app, but Midea's app only runs on a smartphone in its own process, ...

4 years ago
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RE: Does your heat pump calculate and provide you with a COP figure?

Midea 14kW with Midea Controller - short answer is no. If I add the Midea app, I get daily kWh in and kWh out, meaning I can manually (and tediously...

4 years ago
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RE: Buffer tank required? Samsung 12kW heat pump

@hughf - to expand on the use of conversion factors, this is a screen grab from the key bit of my spreadsheet. I was sizing KRAD rads but their correc...

4 years ago
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RE: Buffer tank required? Samsung 12kW heat pump

@derek-m - The secondary glazing uses sheets of clear plastic held in place by magnetic strips. It is very unobtrusive but not invisible when in place...

4 years ago
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RE: Buffer tank required? Samsung 12kW heat pump

@hughf - I didn't use the Freedom w/m2 values, 500W x 1000H is not the same output as 1000W x 500H, its a typical Freedom fudge. Better to use the 'co...

4 years ago
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RE: Buffer tank required? Samsung 12kW heat pump

@hughf - mine's a bit older, mid 1700s with later additions. All solid stone walls with the exception of the extension I added. Single glazed with a m...

4 years ago
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RE: Buffer tank required? Samsung 12kW heat pump

@editor - a local firm, I've been at pains not to drop him in it because he has been very helpful throughout (I would recommend him), though I think a...

4 years ago
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RE: Observation about radiators and weather compensation

@derek-m - I currently have the system running mostly but not exclusively in WC mode. The room stat is set high-ish (19 degrees) and most of the time ...

4 years ago
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RE: Observation about radiators and weather compensation

@derek-m - yes, it does, thanks, apart from one question/observation: what happens if the secondary pump isn't running, because the room stat isn't ca...

4 years ago
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RE: Observation about radiators and weather compensation

@derek-m - I'm still confused by the minimum volume requirement, and how Freedom's plate heat exchanger requirement fits with that. Graham Hendra's ar...

4 years ago
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RE: Observation about radiators and weather compensation

The results from the 24 hour test run are in. The ambient temps from the local weather station and the Midea app are in very close agreement, suggesti...

4 years ago
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RE: Observation about radiators and weather compensation

@batlto - agreed, that makes sense, and is definitely an improvement, but there are also other significant factors eg my old poorly insulated building...

4 years ago
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