mbender
Well-known member
No. But something tells me you weren't serious.DNAinaGoodWay said:
DC charging on wheels. Charge while driving.
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DNAinaGoodWay
Well-known member
mbender said:
I do enjoy a good pipe dream every now and then.
hill
Well-known member
Yea, Zero . . . . as if the distillation of hydrogen via natural gas is emission free. Time to smell the coffee. Shell oil is in LOVE with the idea of hydrogen cars. guess why.minispeed said:
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adric22
Well-known member
mctom987 said:
I think the solar panels are doable. Sure, even at 500 watts, that means on a good day a car could generate 6 kwh of power from the sun. At 3.5 miles per kwh, that's roughly 21 miles of free driving per day from the sun. I think the 500 watt estimate is kind of high, though. I think a more realistic expectation would be around 200 watts. Which means 2.4 kwh or roughly 8.5 miles of range.
Still, even at a realistic 8 miles per day, multiply that by 365 days per year and you can drive 2,920 miles per year on sunlight. Over the life of the car, lets say 10 years, that is 29,200 miles. That is $3,000 to $5,000 worth of gasoline saved just from the solar panels.
mbender
Well-known member
Operative phrase here being "on a good day", to which I would add, "with the car having full exposure during the entirety of that day." How common is this ("good days" + long exposure)? It would work for some, but not for most. My generous estimate is 25%, but let's be really optimistic and say half. Now, your subsequent calculations proceed for the best case (all days are "good days") scenario, and we know that is not the case:adric22 said:
Divide this result by 2 and you get $2000, say even $2500, in 10 years. We're not done yet, though: now you/we have to SUBTRACT from that $2500 the added cost of including such a high quality panel in the production process ($1000, minimum?), and I'm not sure it would be worth it, much less perceived to be worth it.adric22 said:
BUT... it could be offered as an option -- for those who think they'd get enough sun, for those who are not-so-good at math and/or were "sold on it", or those who just want and like solar/high-tech/gadgety things. And then "the market would decide", as they say. But internally, at the manufacturers, the marketers would have to convince the engineers, executives and bean-counters that it was worth their risk and expense to offer such an option. And I think that won't happen for a while, not until there are significant decreases in panel prices or significant INcreases in their efficiency (or the price of gasoline).
minispeed
Well-known member
hill said:
I know that when hydrogen starts it will probably come from natural gas, but it doesn't have to. So if we're in a thread talking about what if's and best world scenarios hydrogen can come from water. Also just like electricity now where you can pay to offset, or ensure your home is supplied with green electricity, if hydrogen does take off I am sure that there will be some one some where selling clean zero emission hydrogen (probably for more money) that you could choose to purchase so that you can know you are running zero emissions.
After all as much as big oil is interested in hydrogen now transportation and storage of hydrogen is still a complex and expensive issue. Transportation and storage of water is simple and easy. If a system can be designed so that local fueling stations make hydrogen on site from water and store a short supply for cars/trucks then that would be zero emissions if the electricity is zero emissions. Although this technology is a lot more expensive now the savings is in not having to build and maintain a hydrogen distribution network.
You're a little off. 2kWh per day would be a more realistic expectation from 500W of panels. Realize that 8 hours of sun does not mean 8 hours of 100% production. It's closer to 4 hours of 90% production, and 4 hours of 25% production. The only places with 20+ hours of daylight are at such an extreme zenith, you're unlikely to get even 30% power from the panels. This basically means you need to find a place with 40 hours of daylight per day….adric22 said:
FWIW: My area has 5.15 "solar hours" per day on average. This means that 500W panel would generate about 2060Wh per day. (500 * 80% * 5.15). The sun is out for about 13 hours during the summer, and 15 hours on the solstice.
mbender
Well-known member
What kind of pipe? LOLDNAinaGoodWay said:
IssacZachary
Well-known member
This thread had me thinking of a way to tow a Leaf with nearly any vehicle.
The greatest stress during towing, from what I understand, is the acceleration needed to pull the whole combined load up to highway speed. But the Leaf has a motor of it's own! The just has to be a way to get the Leaf to apply power to the wheels when the vehicles are accelerating or climbing a hill.
The next greatest stress is from braking. Again the Leaf has brakes, and can even regen brake!
If someone could figure out how to control it you could practically tow a Leaf behind any vehicle and automatically convert it into a hybrid.
The greatest stress during towing, from what I understand, is the acceleration needed to pull the whole combined load up to highway speed. But the Leaf has a motor of it's own! The just has to be a way to get the Leaf to apply power to the wheels when the vehicles are accelerating or climbing a hill.
The next greatest stress is from braking. Again the Leaf has brakes, and can even regen brake!
If someone could figure out how to control it you could practically tow a Leaf behind any vehicle and automatically convert it into a hybrid.
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