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| The Electric Vehicle Future: Where is all the power going to come from? |
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| bdunham7:
--- Quote from: nctnico on February 15, 2020, 01:18:17 pm --- Yes because (together with Norway) the Netherlands is furtest ahead with adoption of EVs. So the challenges 'we' have here will pop up somewhere else too. Perhaps the Netherlands is even a better blueprint compared to Norway because the Netherlands doesn't have a large source of renewable electricity (unlike Norway where they get nearly all the electricity from hydro). --- End quote --- You have significant EV penetration due to coercive tax policies (and very high taxes overall), but no parking space and according to you, inadequate wiring. Perhaps Bangladesh will run into the same issues someday. I think that most of the rest of us will be OK. |
| duak:
Just to inject a bit of levity. Could the car heater be smart silicon and do something useful like mining Bitcoins? Practically though, I have a heat pump at home that is at least twice as efficient at converting kW-Hs to BTUs or Joules as a resistor. Since an EV's drive electronics and batteries generate heat that has to be dissipated, does anyone know if any EV uses some of the waste heat to heat the passengers? Or even better, has a heat pump to heat/cool the passengers and electronics? BTW, my first car back in the 70s had a 5 liter V8. Efficient it was not but it had a terrifically good heater that could peel the skin off your nose in the coldest weather (-25 C) I drove it in. |
| Ed.Kloonk:
--- Quote from: nctnico on February 15, 2020, 01:18:17 pm --- --- Quote from: BravoV on February 15, 2020, 12:55:21 pm ---Seeing a lot of "Netherland" or "Amsterdam" words in this discussion, are these places, considered as the "ideal" reference for this particular topic of discussion ? :-// --- End quote --- Yes because (together with Norway) the Netherlands is furtest ahead with adoption of EVs. So the challenges 'we' have here will pop up somewhere else too. Perhaps the Netherlands is even a better blueprint compared to Norway because the Netherlands doesn't have a large source of renewable electricity (unlike Norway where they get nearly all the electricity from hydro). --- End quote --- I'm waiting for the Dutch to come out with a roof rack mounted wind generator car. ;) |
| mikeselectricstuff:
--- Quote from: duak on February 16, 2020, 06:22:35 am ---Since an EV's drive electronics and batteries generate heat that has to be dissipated, does anyone know if any EV uses some of the waste heat to heat the passengers? Or even better, has a heat pump to heat/cool the passengers and electronics? --- End quote --- There is isn't much waste heat from the electronics, probably not enough to be worth using for passenger heating, though there may be a single coolant loop to use whatever heat is available from any source. Some cars do use heat pumps, both for battery thermal management (heating or cooling) as well as passenger compartment. Sometimes whether or not heat pumps are fitted depends on the country they are sold in. Here's some info on the Hyundia Kona /Kia E-Niro thermal management system : https://electricrevs.com/2018/12/20/exclusive-details-on-hyundais-new-battery-thermal-management-design/ |
| richard.cs:
As mikeselectricstuff says a single coolant loop is common. The Zoe uses a liquid cooled inverter and motor coupled with a very conventional-looking radiator. It has heat-pump heating/cooling of the passenger compartment which can pump heat from or dump it to this coolant loop. Waste heat can therefore be used to heat the cabin, though there's not generally a huge amount of it and really it just assists the heat pump a little by giving it a lower temperature differential to work with. Below about 4 °C outside it switches to resistive heating with a corresponding efficiency hit. The same power electronics and therefore the same coolant loop is also used when charging, so if heating the cabin during (or shortly after) charging (some of) that waste heat is also recovered. |
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