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| 08:11 AM | ||
| Users Online Now: 1,665 (Who's On?) | Visitors Today: 465,790 | |
| Pageviews Today: 712,049 | Threads Today: 270 | Posts Today: 3,610 |
| 08:11 AM | ||
Why don't they have a self charging electric vehicle? | |
| Anonymous Coward User ID: 5461667  United States01/06/2023 04:30 PM Report Abusive Post Report Copyright Violation | Sure, the battery pulls the car at first, but what happens as the battery goes low? That's right, a gasoline or diesel engine begins to burn fuel, make horsepower, some of which pulls the car as the rest is applied to recharge the battery. Hybrids burn fuel. Again, there's no free lunch. |
Weisshaupt
 User ID: 77077464 United States01/06/2023 05:03 PM Report Abusive Post Report Copyright Violation | Add a Quoting: bigD111 ^^^^ Fixed it for you OP. Good point; there's definitely a way around the 2nd law of thermodynamics; it's 2023 for cripes sake Yah a generator is a alternator attached to a gas engine....oh. Alternators use centrifugal force to create energy to charge batteries. Generators function differently and although the end result is the same, the terms aren't mutually exclusive. Um no. Alternators generate energy using magnets and coils, its just an antiquated term for generator. Run it the other way and an alternator is a motor. Centrifugal force cannot produce a voltage or a current. Its certainly present as a means of keeping the innards of the alternator from flying off into space, but it is not converted to anything buy angular momentum |
| Anonymous Coward User ID: 84206888 United States01/06/2023 05:14 PM Report Abusive Post Report Copyright Violation | And or under deceleration, braking. [link to en.m.wikipedia.org (secure)] Op, what would power the generator? Friction? It’s not net positive to overcome frictional losses.. Unless you get get friction for free. I.e downhill or braking.. Like your thinking though. Bingo... |
| Anonymous Coward User ID: 85066585 United States01/06/2023 05:21 PM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 84428656 United States01/06/2023 05:25 PM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 84282207 United States01/06/2023 05:25 PM Report Abusive Post Report Copyright Violation | Add a generator that puts charge back into the battery while you drive. It can't be that hard, can it? Quoting: bigD111 That is called a hybrid and they have had them available for sale for over a decade. If the battery tech was decent it would be awesome The battery tech sucks, and you end up making the vehicle WAAAY heavier and having to replace the battery after 16 years of use ( you need to drive an electric vehicle for 60,000 just to alleviate the footprint of the battery as it comes to you n the new car- hybrids take longer since they still burn gasoline) If we had battery tech that didn't involve rare earth mining and resulted in the same storage capacity in something that was 50% lighter, then you would have something. Graphene battery |
| JustmeTX
User ID: 84369183 United States01/06/2023 05:27 PM  Report Abusive Post Report Copyright Violation | |
| bigD111
(OP) User ID: 81114246 United States01/06/2023 05:34 PM  Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 78701318 01/06/2023 05:39 PM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 5461667 United States01/06/2023 05:58 PM Report Abusive Post Report Copyright Violation | Make the passenger, and all the pasengers pedal to charge the battery. Quoting: Anonymous Coward 83912664 Connect all the stationary bikes at the gym to the grid. Generate electricity. Prisons could be hamster wheel powerplants. Each prisoner does 8 hours a day until he's 65, then does three. There's an energy crisis you know. It's time they help out. |
| Anonymous Coward User ID: 84979589 United States01/06/2023 06:04 PM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 85067140 United States01/06/2023 06:04 PM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 72757720 United States01/06/2023 06:18 PM Report Abusive Post Report Copyright Violation | I remember seeing some prototype cars that had mini turbines at the front where the lower lights would be (or in addition to). I also conversed briefly a few years ago with a guy who placed a wind turbine on the top of the car - he was still experimenting with it but admitted it probably wasn't practical (it was a BIG turbine in relation to the car). Quoting: Anonymous Coward 78268007 It seemed like an interesting idea, but is probably not practical because in order to generate enough power to effectively charge the batteries it would have to be so large as to generate a negative amount of drag and also it's additional complexity and expense. Covering a car in solar panels has also be considered but again suffers from similar problems. Electric cars have at least 60Kw-H of storage int he battery. A typical modern 3'x6' solar panel will produce around 400 watts. You can get maybe 2 of those on a car-- even if you print them to conform with the shape ( they have printable solar panels now) Solar panels in the best climates will get 5 hours of full production - so printer on a car you are looking at maybe 5 Kw-Hr of production at the VERY BEST. - about 1/10 of the charge on a small battery. (solar cells perform worse with heat and cars get hot) I mean take the 1/10 but you aren't going to drive far daily on that I think they could get 3 or 4 300 watt panels on a vehicle if the vehicle was designed with that in mind. Now figure you go 40 or 60 miles to work, cars sits out at work and keeps it topped daily with charge. And if your drive was way 10 or 20 miles you could top it off before your work days ends with less panels If your ever stranded you just wait, charges it self |
| Anonymous Coward User ID: 81131767 United States01/06/2023 06:35 PM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 68104427 United States01/06/2023 06:36 PM Report Abusive Post Report Copyright Violation | Add a generator that puts charge back into the battery while you drive. It can't be that hard, can it? Quoting: bigD111 You can recapture some energy, as you come to a stop. They are working on this for many models of electric vehicle. The issue is that you get back about 7% of the energy put in, so it won't do all the work that way. We always, so far at least, work at a loss of energy in any system. We have to take energy from other places and put them into our machines, to make them run. This is considered a law of physics (The second and Laws of Thermodynamics) and so far we haven't managed any closed systems with perfect recapture of energy that can be used again. Not even close. This doesn't mean we shouldn't try. Efficiency is clearly one of the new sciences and technologies we need to invest in. |
| Anonymous Coward User ID: 65571479 United States01/06/2023 06:39 PM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 81131767 United States01/06/2023 06:40 PM Report Abusive Post Report Copyright Violation | I think they could get 3 or 4 300 watt panels on a vehicle if the vehicle was designed with that in mind. Quoting: Anonymous Coward 72757720 With today's monocrystaline solar tech (highest efficiency in the consumer market) a SINGLE 300 watt panel is 4 feet by 8 feet. 3-4 panels of that size would be a much larger foot print than the car. |
| Anonymous Coward User ID: 73898240 United States01/06/2023 06:41 PM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 81728238  Australia01/06/2023 06:46 PM Report Abusive Post Report Copyright Violation | |
| bigD111
(OP) User ID: 81114246 United States01/06/2023 06:49 PM Report Abusive Post Report Copyright Violation | |
| bigD111
(OP) User ID: 81114246 United States01/06/2023 06:52 PM Report Abusive Post Report Copyright Violation | It's not the American OP's fault. Quoting: Anonymous Coward 81131767 The sh!t school system there stopped teaching Lenz's law after the 1990s. I was in grade school in the 60's and graduated from college in the 70's. My education was in economics, not engineering. But from what I see, these electric vehicles are not the answer and we need to improve them to be a viable alternative. deplorably republican |
| Weisshaupt
User ID: 77077464 United States01/06/2023 06:59 PM Report Abusive Post Report Copyright Violation | I think they could get 3 or 4 300 watt panels on a vehicle if the vehicle was designed with that in mind. Quoting: Anonymous Coward 72757720 With today's monocrystaline solar tech (highest efficiency in the consumer market) a SINGLE 300 watt panel is 4 feet by 8 feet. 3-4 panels of that size would be a much larger foot print than the car. Say you get 4 panels worth at 300 watts each -- its 5-6kw-hrs per day at BEST. That will be at MOST 1/10 of the charge |
| Anonymous Coward User ID: 81728238 Australia01/06/2023 07:29 PM Report Abusive Post Report Copyright Violation | |
