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Joe Qi
Engineering Explained
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Comments by "Joe Qi" (@i6power30) on "How Miserable Is A Winter Tesla Road Trip? -18°C u0026 Broken Superchargers" video.
You won't get the temperature you set to in any weather colder than -5C. Basically the car will prioritize range over comfort. You can set it to 25. It will never heat up near it. Maybe 18-20 after long time. If you put it at max heat, maybe it'll reach 23-24. It's never as toasty as gas car as they have almost unlimited engine residual heat
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@jakekarll8294 have you done rigorous comparison or just a personal impression? I think you are mistaken. I will not stoop down to your level of calling someone a liier without any proof
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A car designed to prolong the range instead of keeping you warm and toasty in cold weather surely does not have a strong heater. It will claim to keep you comfortable only if you like to be in cold
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You don't say what temperature you set it to. Driving in EV in winter is not as warm as gas car. If you like really hot and toasty cabin EV is not for you. It's designed to maximize the range, unlike gas car that has almost unlimited residual heat from engine
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Electric heater is very weak and inefficient. You are ok if you are cold tolerant. If you want it really nice and toasty you need fuel based heater.
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@redbaron6805 it depends on how that electricity is generated. If it's from burning fossil fuel then it's less than 30% efficiency by the time all the transmission losses are taken into account. Whereas if you burn that fossil fuel in your car directly you will get much more heat 100% efficient heat per unit mass. Burning 1 litter of oil gives you much more heat than using that litter of oil to generate electricity then transmit into your car then run the resistive heating element. That's a lot waste. Heat pump can improve that efficiency but still no where near as burning the fuel directly. Also heat pump gets weaker as temperature drops below -5. Whereas fuel burning heat is as strong heat no matter how cold outside is
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@redbaron6805 yeah I totally agree electric cars are far more efficient for moving im not bashing electric cars and supporting ice cars. I'm simply saying that in terms of heat generation burning fuel is more efficient, that is burning fuel directly not in a engine with moving pistons etc. If you read my replies you should realize I advocate having biofuel burners heaters in electric car as an option for cold climate markets such as Canada and Scandinavia. 1lb of biodiesel or propane will heat your car for 5 hours with maximum settings, more if moderate and you can save your electric energy for locomotion instead wasting it in heating. Far more green than using all electric and zero emission cars. A little bit of emission at car level can save much more emission at power plants it's all about perception and marketing
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@redbaron6805 that's my point exactly. EV makers seem to be racing to put bigger and bigger battery packs to see who gets the most kWh. But if you use a fuel burning heater you can have 30% less kWh battery pack and still achieve the same range in cold climate. wouldn't it b be better for adoption in northern regions? It saves the cost as well as lighter vehicle thus more miles per kWh. Granted fuel burning heater is not useful for 90% market that's not northern Canada , Alaska and northern Europe, which is the main reason auto markers are neglecting this obvious solution. I'm not saying make this a standard equipment but for people living in cold climate who really need it, pouring a little bit of heating fuel is not that big a maintenance task. Also it's debatable about complexity, heat pump is arguably more complex mechanism than a kerosene or ethanol burner. The latter is long proven technology and should be more reliable in extended use as well. And there is no issues with refrigerants.
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@redbaron6805 glad you finally see my point. I live in Canada not the coldest part but still more than the year temperature go below freezing. I've owned 3 EVs including a Tesla model 3 and my impression is that they are fine in the summer but not optimized for winter. Having to endure sitting in the freezing temperature waiting to charge and constantly trying to conserve battery range but reducing thermostat and putting on more layers clothes. On those cold winter nights you surely do miss the"waste heat" of a gas vehicle that costs only half as much. That's why most EV owners here also have a gas car for winter. I would say that really defeats the purpose. In the end I settled for a PHEV now that I rarely turn on gas engine except when really needed in a cold cold days and have to go outside of my usual commuting range. But having a reliable heat source there surely put my mind at ease while not being wasteful having two vehicles.
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