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Old 05-18-16, 07:53 AM   #1
redneck
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Default A interesting energy storage idea

Another interesting energy storage idea.



https://www.wired.com/2016/05/forget...ed-train-hill/

https://vimeo.com/39364772

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Old 05-18-16, 08:06 AM   #2
stevehull
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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?

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Old 05-18-16, 08:14 AM   #3
redneck
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Default

.

More info here.

Electricity and Power Storage - Ares North America


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Old 05-18-16, 10:12 AM   #4
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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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