Homemade Heat Pump Manifesto (2009)

Re:Homemade Heat Pump Manifesto (2009) by thombat on Saturday September 24, 2022 @04:07AM (#32960622)

Ground source boreholes are mostly 10-15 metres deep, so not wildly expensive, especially when part of a new construction. You may be thinking of classic geothermal bores? Drilling down to proper hot-rocks would be a much costlier scheme in most of the UK.

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Re:Homemade Heat Pump Manifesto (2009) by dzhiurgis on Saturday September 24, 2022 @02:32PM (#32965393)

Wonder if you could drill centralised borehole and then use retrofit old gas lines to move compressed refrigerant…

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Re:Homemade Heat Pump Manifesto (2009) by voisin on Saturday September 24, 2022 @09:25AM (#32962382)

> Drilling down to proper hot-rocks would be a much costlier scheme in most of the UK.

Is this something people do?

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Re:Homemade Heat Pump Manifesto (2009) by bombcar on Saturday September 24, 2022 @10:26AM (#32962888)

Big buildings do. They often have to go down that deep for foundation pillars anyway.

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Re:Homemade Heat Pump Manifesto (2009) by shh_labs on Saturday September 24, 2022 @11:05AM (#32963303)

You don’t need a borehole at all. Ours uses coils of pipe that are about 1m deep.

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Re:Homemade Heat Pump Manifesto (2009) by Gordonjcp on Saturday September 24, 2022 @01:39PM (#32964876)

So, not really suitable for most of the north-west then.

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