You can have geothermal power everywhere if you drill deep enough

Re:You can have geothermal power everywhere if you drill dee... by tinco on Saturday February 26, 2022 @09:03AM (#30477624)

A 60m borehole is not a source of energy, it is a store of energy. It only makes sense if you can sink enough heat into it in the summer, to use that energy in the winter. Or vice versa in warmer climates.

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Re:You can have geothermal power everywhere if you drill dee... by jmacd on Saturday February 26, 2022 @09:13AM (#30477684)

We have a ground source heat pump and one summer we were away and did not use out air conditioning that year much at all. Mid winter our return loop temperatures (the glycol being brought in to our heat pump after circulating in the ground) was at one point 3 degrees C cooler than it had been any other year. Quite a noticeable difference. For reference, our loops are 8 vertical at 250ft.

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Re:You can have geothermal power everywhere if you drill dee... by FredPret on Saturday February 26, 2022 @09:35AM (#30477867)

Wait, do you need eight 250ft wells?

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Re:You can have geothermal power everywhere if you drill dee... by tinco on Saturday February 26, 2022 @11:09AM (#30478737)

Yeah for a family home that seems about right. 250ft is not very deep at all, and you need to store a lot of energy to past a whole winter/summer.

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Re:You can have geothermal power everywhere if you drill dee... by jmacd on Monday February 28, 2022 @02:49PM (#30504241)

For a closed loop system, yes. I think that would be the minimum (6000 sq ft house) at 250ft depths.

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