Rob Morley wrote:
snip
Could they not have used a wind pump instead of electric?
A heat pump is more than simply a pump.
It's basically a refrigerator cooling the field where the coil is buried
and heating the church.
While in theory you could run this from wind power, it'd be a really
large and complex installation to do so. (in combination with battery
bank to level the load, and ...).
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