Heat pumps can’t take the cold? Nordics debunk the myth::By installing a heat pump in his house in the hills of Oslo, Oyvind Solstad killed three birds with one stone, improving his comfort, finances and climate footprint.

  • Dojan@lemmy.world
    link
    fedilink
    English
    arrow-up
    15
    arrow-down
    4
    ·
    edit-2
    1 year ago

    The problem isn’t that EVs don’t work in the winter, it’s that their range gets significantly reduced. We had issues with people literally up and abandoning their vehicles because their batteries ran flat.

    In these cases the issue is less that the range is lost, and more that with snowy and cold weather traffic gets unpredictable. You can end up in long queues and that’s where the issues start.

    When I went on a work trip up in the far north I never saw a single EV. Asked my colleagues about it and none of them thought EVs particularly feasible as a primary vehicle.

    All that said, EVs work great for most people most of the time.

    • helenslunch@feddit.nl
      link
      fedilink
      English
      arrow-up
      7
      arrow-down
      2
      ·
      1 year ago

      We had issues with people literally up and abandoning their vehicles because their batteries ran flat.

      Do gas cars have infinite fuel tanks in your area?

      • unconfirmedsourcesDOTgov@lemmy.sdf.org
        link
        fedilink
        English
        arrow-up
        8
        arrow-down
        1
        ·
        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.

        • QueriesQueried@sh.itjust.works
          link
          fedilink
          English
          arrow-up
          2
          arrow-down
          3
          ·
          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.

        • helenslunch@feddit.nl
          link
          fedilink
          English
          arrow-up
          2
          arrow-down
          8
          ·
          edit-2
          1 year ago

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

          And go ahead and ask yourself this again before submitting your next reply.

          Most EVs will factor temperature and climate use in their range predictions.

          • Sodis@feddit.de
            link
            fedilink
            English
            arrow-up
            4
            arrow-down
            2
            ·
            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.

            • tony@lemmy.hoyle.me.uk
              link
              fedilink
              English
              arrow-up
              1
              ·
              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.

            • helenslunch@feddit.nl
              link
              fedilink
              English
              arrow-up
              1
              arrow-down
              2
              ·
              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.

              • Sodis@feddit.de
                link
                fedilink
                English
                arrow-up
                5
                arrow-down
                1
                ·
                1 year ago

                From cooling the engine. When you are standing still and the engine is running it consumes about 1l/h. I just looked up some numbers for EVs: 100kWh battery, heating takes 1kW for every 10K temperature difference, so 3kWh in -10°C. Its higher if you use additional stuff like the heating for the seats. With 150kWh/100km consumption you lose 20km every hour you are in the heated car. I would say that’s a noticeable difference compared to no heating. I also checked how much an AC takes in summer and its about 1 to 2kW for 30°C.

                • helenslunch@feddit.nl
                  link
                  fedilink
                  English
                  arrow-up
                  1
                  arrow-down
                  3
                  ·
                  edit-2
                  1 year ago

                  From cooling the engine.

                  Yes, keep going. Now where do you think the heat in the engine comes from?

                  The heat doesn’t use anymore than the AC because it’s the same system running in reverse.

                  Using heated seats offsets the need to heat the air.

                  With 150kWh/100km consumption

                  WTF is this, a dump truck? It’s ~240wh/mi x 62 miles = <15kWh/100km

                  • Sodis@feddit.de
                    link
                    fedilink
                    English
                    arrow-up
                    2
                    ·
                    1 year ago

                    The answers to your question is already in my post and the 150 was obviously a typo, because the loss in range checks out. It should be 15. AC uses less because the temperature difference is less.

      • Dojan@lemmy.world
        link
        fedilink
        English
        arrow-up
        2
        arrow-down
        1
        ·
        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.

        • helenslunch@feddit.nl
          link
          fedilink
          English
          arrow-up
          1
          ·
          edit-2
          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.

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

          As I mentioned elsewhere, it will last several days.