this post was submitted on 12 Sep 2023
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Oxford study proves heat pumps triumph over fossil fuels in the cold (www.nationalobserver.com)
submitted 1 year ago by L4s to c/technology
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Oxford study proves heat pumps triumph over fossil fuels in the cold::Published Monday in the scientific journal Joule, the research found that heat pumps are two to three times more efficient than their oil and gas counterparts, specifically in temperatures ranging from 10 C to -20 C.

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[–] DarthBueller 1 points 1 year ago (1 children)

What is HRV? I thought it meant a ground loop heat exchanger. I’ve heard about it in the passivhaus model but don’t understand it.

[–] alvvayson 5 points 1 year ago

Houses need fresh air and need to expel dirty air.

The dirty air is warm, while the outside fresh air is cold. With heat recovery ventilation, the heat is transferred into the incoming air and the exhaust air becomes cold. This warms up the air in a very efficient manner.

It can also be combined with a heat pump to extract even more heat out of the exhaust.