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According to the AAA, only about a third of the energy contained in a gallon of gasoline ever gets used to push a vehicle forward. Nearly two-thirds of that energy is turned into heat, some of which is absorbed by the coolant with the rest going out the exhaust pipe.

It’s hard to believe such a wasteful process has become the standard means of powering the world’s transportation sector, but there is good news. Some of that waste heat can be recaptured from the coolant to heat the interior of our vehicles. As wonderful as electric vehicles are, they have no stream of waste heat that can be tapped for the same purpose, which poses a challenge — how to keep EV drivers and passengers comfortable when it’s cold outside? The corollary to that is how to keep them cool when it’s hot outside?

• https://cleantechnica.com/2021/11/22/heating-cooling-are-a-challenge-for-electric-vehicles/

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