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.

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.

  • helenslunch@feddit.nlEnglish
    12·
    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.deEnglish
      51·
      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.nlEnglish
        13·
        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.deEnglish
          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.