Comment on Heat pumps can't take the cold? Nordics debunk the myth

• unconfirmedsourcesDOTgov@lemmy.sdf.org ⁨1⁩ ⁨year⁩ ago

  Based on context, I’d assume that the loss of efficiency of the batteries in the cold led the vehicle to over-estimate the range of the vehicle. If the car says it has 50 miles of range and the next DC charger is 40 miles away, I could imagine a situation where I’d get 30 miles down the road before the range estimate shows that there’s actually only 35 miles of range because you wanted cabin heat.

  EVs are weird in lots of ways when compared to ICE, and we’re still figuring out lots of the problems that need solving.

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  • QueriesQueried@sh.itjust.works ⁨1⁩ ⁨year⁩ ago

    And the people driving them are still learning the quirks for specific circumstances. Many drivers know you need to let a fuel car warm up more or to give it extra gas in XYZ scenario, but those same people won’t always know what to do when switching to electric. Or they might instead do something that helped on a fuel vehicle, but actively harms on an electric, especially with the many manufacturer specific options that have no consistent naming. Hopefully we get some naming consistency soon, if for nothing else than ease of use.

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  • helenslunch@feddit.nl ⁨1⁩ ⁨year⁩ ago

    Again, are you under the impression that gas cars don’t have the same problem?

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    • Sodis@feddit.de ⁨1⁩ ⁨year⁩ ago

      If you are in a traffic jam, you lose range because of the heating. For gas cars, that doesn’t matter at all.

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      • tony@lemmy.hoyle.me.uk ⁨1⁩ ⁨year⁩ ago

        A 1kw heater (less, given they’re all heat pumps these days) isn’t doing squat to the range compared to an 80kw motor.

        A gas car has to idle its engine to get heat. It’s burning fuel constantly… that’s why you frequently see broken down gas cars in heavy traffic.

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      • Nobsi@feddit.de ⁨1⁩ ⁨year⁩ ago

        youtu.be/dFImHhNwbJo?si=7eXmkPeti8dSWdDV&t=22…

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      • helenslunch@feddit.nl ⁨1⁩ ⁨year⁩ ago

        For gas cars, that doesn’t matter at all.

        …where do you think the heat comes from in gas cars?

        Electric heat doesn’t use that much energy. You can be parked for several days with the heat on in freezing weather and be fine.

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• dojan@lemmy.world ⁨1⁩ ⁨year⁩ ago

  No, I believe it’s the heating that does it. In petrol cars the heating is a side effect of the engine running. Using it to heat the car in a way improves the fuel efficiency. In an EV the heat doesn’t come from the engine, so the battery needs to feed both the engine and the heater.

  You can have the engine on and not driving and your petrol will last quite long, not so much with an EV, unfortunately.

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  • helenslunch@feddit.nl ⁨1⁩ ⁨year⁩ ago

    Using it to heat the car in a way improves the fuel efficiency

    Normally, yes, but in this case it’s being used purely for heat, with probably 10% efficiency, where the EV is operating at 300% efficiency so no, definitely not.

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