Comment on Ask HN: Researchers: What practical research hasn't been commercialized?parentComments−danieltillett8yHaven’t you just described a geothermal heat pump [0]. These are not exactly new.0. https://en.wikipedia.org/wiki/Geothermal_heat_pump
Comments
Haven’t you just described a geothermal heat pump [0]. These are not exactly new.
0. https://en.wikipedia.org/wiki/Geothermal_heat_pump