I don’t know if the coolant in fridges undergoes phase change between gas or liquid or just pressure change and stays a gas, but if it does a phase change, sure.
A gaseous refrigerant is compressed so its pressure and temperature rise. When operating as a heater in cold weather, the warmed gas flows to a heat exchanger in the indoor space where some of its thermal energy is transferred to that indoor space, causing the gas to condense into a liquid. The liquified refrigerant flows to a heat exchanger in the outdoor space where the pressure falls, the liquid evaporates and the temperature of the gas falls.
Thanks for the explanation.
So this is effectively like half of a fridges coolant system, but they’re missing the bit where they condense the coolant back and reuse it?
I don’t know if the coolant in fridges undergoes phase change between gas or liquid or just pressure change and stays a gas, but if it does a phase change, sure.
kagis
https://en.wikipedia.org/wiki/Heat_pump
Yeah, sounds like it does do a phase change.