05-18-16, 06:53 AM | #1 |
Helper EcoRenovator
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A interesting energy storage idea
Another interesting energy storage idea.
https://www.wired.com/2016/05/forget...ed-train-hill/ https://vimeo.com/39364772 https://vimeo.com/75895781?from=outro-embed https://vimeo.com/48546631?from=outro-embed > |
The Following User Says Thank You to redneck For This Useful Post: | stevehull (05-18-16) |
05-18-16, 07:06 AM | #2 |
Steve Hull
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Redneck - how about figuring out how much energy you would get from 2000 kg (car weight) going down a 100 foot (33 meter) hill?
Steve
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consulting on geothermal heating/cooling & rational energy use since 1990 |
05-18-16, 07:14 AM | #3 |
Helper EcoRenovator
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05-18-16, 09:12 AM | #4 |
Apprentice EcoRenovator
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P.E. = m X g x h
m = 2000 kg, g = 9.81 m/s^2, h = 33 m P.E. = 647460 J Assuming it takes the car 60 seconds to travel down the hill and there is 100% conversion: P = E/T P = 10.791 kW Assuming 50% conversion (after friction and conversion losses), you are looking at 5 kW. |
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