3 ms·
I have one for my 20m2 shed, it works down to -5c at least. Granted my shed has quite good insulation, but still. Worst comes to the worse you could use a gro
by KaiserPro 6y ago
I have one for my 20m2 shed, it works down to -5c at least.
Granted my shed has quite good insulation, but still.
Worst comes to the worse you could use a ground source heat pump.
- worik 6y agoYes to ground source. Obvious thing to do in a cold climate. I am very sceptical of a Heat Pump working efficiently down to -20F (-28C in modern units) I found -3C was the lowest. It is a new heat pump obtained with the advice of experts. Physics. What is the operating fluid that will evaporate at -28C? As it stands I think it is untrue.
- KaiserPro 6y ago> What is the operating fluid that will evaporate at -28C? remember that its operating at a much higher pressure than normal plus there is a pressure differential between the "hot" side and the "cold" side. my refrigerant is propane, which is a gas until -48c at atmospheric pressure. The main issue is not the refrigerant, but ice build up on the condenser coil. this (I assume) stops the airflow over the coils and generally stops the condenser from absorbing heat(ice might also be less conductive).