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> Citation needed. Are EVs using different cabin heating to ICEs? I'm not sure how to cite the fact that EVs do not have engines. Electric motors do generate w

> Citation needed. Are EVs using different cabin heating to ICEs? I'm not sure how to cite the fact that EVs do not have engines. Electric motors do generate waste heat, but via a significantly more efficient process, so an additional source of heat is needed. > An ICE doesn't heat the engine block? Yes they do. Where's your Audi recirculating waste heat from? Auxiliary heating systems like you describe are the exact same design that EVs use as primaries, just driven electrically. Advantages are that the electricity to torque conversion is still significantly more efficient than chemical energy conversion, and you can run the system without powering the main drive.

FireBeyond 3y ago
> Auxiliary heating systems like you describe are the exact same design that EVs use as primaries, just driven electrically. I'm confused, what non-electrical method of generating cabin heat are EVs using, then? But for the sake of argument - auxiliary heating in an ICE is similar to a floor heater, electrical resistance heating. Beyond that, the argument is that on an ICE, the heat in the engine block is a byproduct of the combustion required to move the vehicle. That heat isn't "free", but is paid for by the primary purpose of moving the vehicle. The effort to push it into the cabin via fans is relatively minimal.
- itishappy 3y ago
  > I'm confused, what non-electrical method of generating cabin heat are EVs using, then? Heat pumps are the fancy way to do it that can be installed in both ICEs and EVs. > the heat in the engine block is a byproduct of the combustion required to move the vehicle. That heat isn't "free", but is paid for by the primary purpose of moving the vehicle. Agreed! It's free in the sense that it's already being generated, but it's still waste because it's generated regardless of need as a result of a suboptimal conversion process. We use it as heat because it's unusable for anything else, but it'd be nicer if it wasn't generated in the first place.

FireBeyond 3y ago

> Auxiliary heating systems like you describe are the exact same design that EVs use as primaries, just driven electrically. I'm confused, what non-electrical method of generating cabin heat are EVs using, then? But for the sake of argument - auxiliary heating in an ICE is similar to a floor heater, electrical resistance heating. Beyond that, the argument is that on an ICE, the heat in the engine block is a byproduct of the combustion required to move the vehicle. That heat isn't "free", but is paid for by the primary purpose of moving the vehicle. The effort to push it into the cabin via fans is relatively minimal.

itishappy 3y ago
> I'm confused, what non-electrical method of generating cabin heat are EVs using, then? Heat pumps are the fancy way to do it that can be installed in both ICEs and EVs. > the heat in the engine block is a byproduct of the combustion required to move the vehicle. That heat isn't "free", but is paid for by the primary purpose of moving the vehicle. Agreed! It's free in the sense that it's already being generated, but it's still waste because it's generated regardless of need as a result of a suboptimal conversion process. We use it as heat because it's unusable for anything else, but it'd be nicer if it wasn't generated in the first place.