Ahh, I did not know that. My experience is through my HVAC course where it only covered heating applications not power generation. Still the way a heat pump in

Ahh, I did not know that. My experience is through my HVAC course where it only covered heating applications not power generation. Still the way a heat pump in a HVAC system works you turn a small temperature difference into larger difference through the "A" coil, essentially compressing the warm air to make it hot, but I guess this does not scale well.