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This does sound like something that should be the subject of a recall investigation.
by raylad 5y ago
This does sound like something that should be the subject of a recall investigation.
- MomoXenosaga 5y agoI wonder if the US government is afraid to kill their golden goose like what happened with Boeing. EV is the future and China is moving fast.
- stfp 5y agoEV != Tesla and Tesla != Autopilot Also maybe hydrogen is the future?
- outworlder 5y ago> Also maybe hydrogen is the future It definitely isn't if we are going to move away from fossil fuels.
- nameisname 5y agoCan't renewables produce hydrogen?
- outworlder 5y agoThey can. But overwhelmingly, they do not. It's much cheaper to extract hydrogen from fossil fuels and that's not likely to change any time soon.
- gumby 5y agoYou can get H+ by cracking water. You “just” need a source of cheap energy. Storage is tough — those protons are really tiny and it’s hard to keep them from escaping
- outworlder 5y ago> You can get H+ by cracking water. You “just” need a source of cheap energy. Well aware. But we don't have a source of cheap energy. And guess what, whatever source of energy we have, it is very wasteful to produce hydrogen. First, you need electrolysis. Around 80% efficient. However, in order to get any usable amount of energy per volume out of it, you need to either compress hydrogen (using more power) or liquefy it (way more power, boiloff problems). Now you need to transport it, physically. This uses more power, usually with some big trucks driving around, just as we have today with gasoline and diesel. This will get stored into some gas station equivalent. All the while losing mass, as those protons are hard to store, indeed. Now you can drive your vehicle and refill. Some inefficiencies here too but we can ignore them unless you need to travel long distances to refuel. This hydrogen will generally be used in a fuel cell. The output of the fuel cell is... electrical energy (+water) You could skip all that, use the electricity from the power grid to directly charge batteries. No hydrogen production plants needed, no container challenges, no diffusing through containers and embrittlement to worry about. No trucks full of hydrogen going around. Electricity is found almost everywhere, even in places where there's little gas infrastructure. Mind you, hydrogen has another disadvantage, other than thermodynamics: it ensures control is kept with the existing energy companies. We would still need to rely on their infrastructure to refill our cars (much like gas stations). They would like to keep it that way. Ultimately it doesn't really matter what's the fuel we are using, as long as we keep driving to gas stations.
- gumby 5y agoI agree, H+ is a dumb approach.
- BenjiWiebe 5y agoAnd H2 isn't much better.
- HWR_14 5y agoIf hydrogen fuel cells lasted longer than batteries (in lifespans, not-per charge) or required fewer rare metals to create, I can see a giant win. EVs are pretty wasteful if you consider the entire car lifespan and not just what the end consumer fills up with, to the point that I feel the ecologically superior action is just to drive an old ICE.
- catlikesshrimp 5y agoHydrogen as fuel is unrelated to fossil fuels. Look it up. Edit: 95% of hydrogen is currently produced from hydrocarbons. BUT Electrolysis https://en.m.wikipedia.org/wiki/Electrolysis_of_water https://en.m.wikipedia.org/wiki/Electrolysis_of_water Hydrogen as a fuel has been tested in buses. Works a proof of concept. This was about hyundai marketing hydrogen as a fuel: https://www.economist.com/science-and-technology/2020/07/04/after-many-false-starts-hydrogen-power-might-now-bear-fruit https://www.economist.com/science-and-technology/2020/07/04/... In the end, it will depend on the energy conversion efficiency that can achieved in the future.
- ipsum2 5y agoAll major car companies manufacture EVs. Off the top of my head, I've seen BMW, Prius (Toyota), Honda electric cars outside recently.
- catlikesshrimp 5y agoHydrogen production should be coupled to renewable energy production in the way they will pair bitcoin mining to any energy plant
- tshaddox 5y agoGenuine question, what temperature are cars expected to be stored at safely? I'm not talking about engine temperature, just literally the room temperate of the garage. I'm not wanting to excuse or accuse anyone here, but are cars supposed to be manufactured such that they can sit in 150F garages for days at a time without any maintenance?
- xwdv 5y agoYour garage is not 150F, and certainly not for days at a time.
- tshaddox 5y agoIndeed mine certainly is not, but apparently the parent commenter's routinely reaches 150F.
- kfprt 5y agoI suppose teslas could come with warnings, "this vehicle is not intended for use in Arizona".
- hoppyhoppy2 5y agoI assumed they were referring to the interior of the vehicle rather than the interior of a building.
- jmpman 5y agoIt’s not parked in a garage. Outside, facing southwest, in the Phoenix summer. Tesla’s overheat protection only works for 12 hours at a time. If I were commuting, then maybe this wouldn’t have happened, but during Covid, the car was just sitting there for days without being driven. Tesla doesn’t offer a way to extend overheat protection past 12 hours, even when plugged in.
- heavyset_go 5y agoThere are a lot of cars that get parked in the hot Arizona sun everyday, where temperatures outdoors can exceed 100 F and interior temperatures can exceed 150 F[1]. [1] https://www.desertsun.com/story/life/home-garden/james-cornett/2016/08/05/keep-cool-hot-summer-days/88007062/ https://www.desertsun.com/story/life/home-garden/james-corne...