Comments on: Yo-Yo Action is the Key to Zero Carbon Charger http://cleantechnica.com/2010/01/12/yo-yo-action-is-the-key-to-zero-carbon-charger/ Clean Tech News & Views: Solar Energy News. Wind Energy News. EV News. & More. Tue, 30 Dec 2014 02:13:00 +0000 hourly 1 http://wordpress.org/?v=4.0.1 By: Steve Lavigne http://cleantechnica.com/2010/01/12/yo-yo-action-is-the-key-to-zero-carbon-charger/#comment-8502 Wed, 13 Jan 2010 20:22:43 +0000 http://cleantechnica.com/?p=4441#comment-8502 Apparently in the year 3000 the Scooty Puff Jr. is all the rage for military assaults, and it uses a wind up key.

]]> By: Steve Lavigne http://cleantechnica.com/2010/01/12/yo-yo-action-is-the-key-to-zero-carbon-charger/#comment-25804 Wed, 13 Jan 2010 20:22:00 +0000 http://cleantechnica.com/?p=4441#comment-25804 Apparently in the year 3000 the Scooty Puff Jr. is all the rage for military assaults, and it uses a wind up key.

]]> By: Brian N http://cleantechnica.com/2010/01/12/yo-yo-action-is-the-key-to-zero-carbon-charger/#comment-8501 Wed, 13 Jan 2010 03:04:59 +0000 http://cleantechnica.com/?p=4441#comment-8501 Human kinetic energy at a power of 100-150W is a real body work out. A 1 hr effort would only give you about 1/10 of a kWh (assuming a >90% eff generator) ie a penny or two worth of charge. Thats on par with the energy in 1/360 of a gallon of gas or the butanol in a lighter or heat from 341 matches

A hand powered toy in any form would only give you 1/10 to 1/00 that. Sure it could power some LEDs but it could never payback its cost or its embodied energy.

As for solar gizmos most portable gadgets probably rarely get much solar exposure or a chance to deliver useful power like a roof PV. Again most never pay back their cost or embodied energy. They may add other real value but in no are most solar gizmos green.

The military are interested in portable power like methanol fuel cell / lithium battery powered devices and solar thermal plants for base electric power.

If the military see this article, I can really see them splitting their sides with the YoGen.

]]> By: Brian N http://cleantechnica.com/2010/01/12/yo-yo-action-is-the-key-to-zero-carbon-charger/#comment-25803 Wed, 13 Jan 2010 03:04:00 +0000 http://cleantechnica.com/?p=4441#comment-25803 Human kinetic energy at a power of 100-150W is a real body work out. A 1 hr effort would only give you about 1/10 of a kWh (assuming a >90% eff generator) ie a penny or two worth of charge. Thats on par with the energy in 1/360 of a gallon of gas or the butanol in a lighter or heat from 341 matches

A hand powered toy in any form would only give you 1/10 to 1/00 that. Sure it could power some LEDs but it could never payback its cost or its embodied energy.

As for solar gizmos most portable gadgets probably rarely get much solar exposure or a chance to deliver useful power like a roof PV. Again most never pay back their cost or embodied energy. They may add other real value but in no are most solar gizmos green.

The military are interested in portable power like methanol fuel cell / lithium battery powered devices and solar thermal plants for base electric power.

If the military see this article, I can really see them splitting their sides with the YoGen.

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