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catapult
@catapult
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Joined: Jan 22, 2023
Last seen: Jan 28, 2023
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Topics: 1 / Replies: 17
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RE: Low COP on Samsung 16kw Gen6

I got the pipes on the hot water cylinder lagged (although ran out for a small area). Shocked at the difference it made. Heat loss went from 0.46 degr...

4 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Low COP on Samsung 16kw Gen6

@iancalderbank @derek-m I got some thermometers onto the pipes to/from the buffer. At flow temp of 37 degrees from ASHP to buffer 36.7 from buffer...

4 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Low COP on Samsung 16kw Gen6

Oh that's interesting. I was kinda hoping it'd be a lot more of a difference! But those numbers seem to be similar to what I'm seeing.

4 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Low COP on Samsung 16kw Gen6

@iancalderbank McDonald Water Storage Vented 200L cylinder

4 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Low COP on Samsung 16kw Gen6

@iancalderbank The pipes around the hot water cylinder have no insulation... so that's a job for this weekend. The pipes around the HP in the boiler r...

4 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Low COP on Samsung 16kw Gen6

@iancalderbank thank you. I've purchased the thermometers and will go from there.

4 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Low COP on Samsung 16kw Gen6

I stayed up til way past my bedtime to watch what the DHW does. Apparently drops at 0.46 degrees an hour, which seems quite high. So 11 degrees a day....

4 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Low COP on Samsung 16kw Gen6

Does using the schedule override DHW heating the rest of the time? Or do you change the "temp to start heating" so low that it never heats, until the ...

4 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Low COP on Samsung 16kw Gen6

I found the heat loss calcs. House size 230sqm. For space heating the house requires 26,479 kwh/yr. The HP is expected to consume 7,653kw/yr with a ...

4 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Low COP on Samsung 16kw Gen6

I worked out the COP and usage/generation for the last few days. The weather turned on Jan 14 (from 10-12 degree high to 0-4 degree high), so perhaps ...

4 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Low COP on Samsung 16kw Gen6

@william1066 thanks for sharing. All makes sense. Nice to know others are going through the same tinkering, though I'm jealous of your graph! How do y...

4 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Low COP on Samsung 16kw Gen6

@craig1980 ha, are any of them?

4 years ago
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Air Source Heat Pumps (ASHPs)
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