4 ms·

So a bunch of copper rods drilled into the soil for a reverse heat pump?

• zdragnar 3y ago
  Don't forget that the heat will transfer both ways. Heat pumps require some form of mechanical energy to move the heat (usually via some fluid) that you can shut off when the sun is down if you don't want that heat radiated back to the atmosphere. Much better to just put up a bunch of mirrors so the light never gets absorbed as thermal energy into the earth in the first place.