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GSHP CoPs and Vertical Bores
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ec000
Posts: 3 Newbie
Hello everyone
We have a Vaillant 10kW GSHP with flow temperature (UFH) of about 36 degrees. However, it's only running with a CoP of about 3.3, which seems quite poor for a GSHP.
The ground loop consists of two vertical bores, each to 100m. The system was installed by the previous house owners, and I believe them (despite no access hatches).. but whether they were ripped off is another question.
The ground loop is only giving a temperature of about 5 degrees at the moment, which seems poor for a vertical bore system. Does anyone have experience of what vertical bores should be giving? We live in London.
Assuming it's more than 5 degrees (10 perhaps?) that might be a cause of our CoP of 3.3 rather than 4+. But I suspect there's not much we can about it... short of digging up the entire garden.
Any thoughts would be appreciated!
We have a Vaillant 10kW GSHP with flow temperature (UFH) of about 36 degrees. However, it's only running with a CoP of about 3.3, which seems quite poor for a GSHP.
The ground loop consists of two vertical bores, each to 100m. The system was installed by the previous house owners, and I believe them (despite no access hatches).. but whether they were ripped off is another question.
The ground loop is only giving a temperature of about 5 degrees at the moment, which seems poor for a vertical bore system. Does anyone have experience of what vertical bores should be giving? We live in London.
Assuming it's more than 5 degrees (10 perhaps?) that might be a cause of our CoP of 3.3 rather than 4+. But I suspect there's not much we can about it... short of digging up the entire garden.
Any thoughts would be appreciated!
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You might get some useful feedback on this Facebook group - https://www.facebook.com/groups/684966259514987
6.4kWp (16 * 400Wp REC Alpha) facing ESE + 5kW Huawei inverter + 10kWh Huawei battery. Buckinghamshire.1
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