A interesting energy storage idea

redneck · 05-18-16, 07:53 AM

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

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stevehull · 05-18-16, 08:06 AM

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

redneck · 05-18-16, 08:14 AM

.

More info here.

Electricity and Power Storage - Ares North America

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natethebrown · 05-18-16, 10:12 AM

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.

05-18-16, 07:53 AM	#1
redneck Helper EcoRenovator Join Date: Dec 2010 Location: US Posts: 56 Thanks: 1 Thanked 17 Times in 11 Posts	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 >

05-18-16, 08:06 AM	#2
stevehull Steve Hull Join Date: Dec 2012 Location: hilly, tree covered Arcadia, OK USA Posts: 827 Thanks: 241 Thanked 165 Times in 123 Posts	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 __________________ consulting on geothermal heating/cooling & rational energy use since 1990

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05-18-16, 08:14 AM	#3
redneck Helper EcoRenovator Join Date: Dec 2010 Location: US Posts: 56 Thanks: 1 Thanked 17 Times in 11 Posts	. More info here. Electricity and Power Storage - Ares North America >

05-18-16, 10:12 AM	#4
natethebrown Apprentice EcoRenovator Join Date: Aug 2012 Location: North Alabama Posts: 167 Thanks: 0 Thanked 40 Times in 20 Posts	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.