Britain has declared a national emergency because of the heat

Re:Britain has declared a national emergency because of the ... by danans on Monday July 18, 2022 @01:09PM (#32140645)

> Why not just suggest they go sit in the garage with a car running?

Because an ICE car engine's thermodynamic efficiency is already abysmal and running an AC off the alternator current makes it even worse. That and carbon monoxide poisoning.

But if you have an EV, it's a pretty nifty idea right now to plug it in and turn on the AC to cool down. I'm going to share that idea with some folks I know in the UK with EVs.

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Re:Britain has declared a national emergency because of the ... by fomine3 on Tuesday July 19, 2022 @12:04AM (#32147413)

Car A/C is generally run directly by engine rather than via electricity, unless your car is strong hybrid/EV. Anyway it's worse for efficiency. Hybrid cars with electric A/C are better than that because it has true generator rather than alternator, and its engine run occasionally while not moving.

Another tip for cooling car is to avoid sunlight as possible. Glass surface on car is so big.

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