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General Cooking (rec.food.cooking) For general food and cooking discussion. Foods of all kinds, food procurement, cooking methods and techniques, eating, etc. |
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On Sat, 26 Jun 2010 13:44:17 -0400, "J. Clarke"
> wrote: >On 6/26/2010 3:11 AM, sf wrote: >> On Sat, 26 Jun 2010 12:08:55 +1000, > >> wrote: >> >>> I laugh at those who suggest the electric cars (plug in overnight types) >>> are going to solve the emissions problems. You see, all our electricity >>> is generated, in my home state at least, by dirty brown coal generators. >>> All that's going to happen is a transferrence of pollution to where the >>> generators are. >> >> I don't know about "most people", but my vision of the perfect >> electric car has never been a plug in type - it's always solar. > >So how does that work? > In theory it works nicely. In practice, not so well. A good rule of thumb is one horsepower per square yard of fully-illuminated area. A car that requires twenty horsepower---which is pretty low by today's standards---needs an area of solar cells at least nine feet by twenty feet. Working solar cars have been constructed. They require extreme lightweight materials and aren't well-suited to a Sunday drive with the family. More like "one person, 10-20 mph, as long as it's sunny." Someone may pipe up and say "but you can use batteries and charge them when you're not driving". That's done with the experimental cars but there's a very carefully-calculated tradeoff in weight and performance. Take a look at this car: http://www.speedace.info/solar_cars/..._road_test.jpg Not much room for anything but a driver. Best -- Terry |
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