2 ms·
Not to mention the Carnot efficiency losses causing ~50-70% of the heat energy at the generator to go out its cooling system. Yes, It's not clear at all that h
by fghorow 4y ago
Not to mention the Carnot efficiency losses causing ~50-70% of the heat energy at the generator to go out its cooling system.
Yes, It's not clear at all that heat pumps are always a win -- depending on the energy source mix of your local grid. But with a COP of 3-4 (i.e. 3-4 times more heat is moved by the pump than is supplied as electrical energy) if there's a decent renewable contribution to electrical generation on your local grid, it might well be a win in terms of CO2 emissions. YMMV.
- PaulDavisThe1st 4y ago> Yes, It's not clear at all that heat pumps are always a win -- depending on the energy source mix of your local grid As others have noted, a new gas furnace might break even right now with an electric air-source heat pump, but how is it going to work out as electrification and decarbonization proceeds? Break even now, come out ahead in the future - choose heat pumps.