Talk:Environmental Impact: Difference between revisions

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(Consider the food impact too.)
 
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|[http://en.wikipedia.org/wiki/Food_energy human food to muscle work conversion efficiency] 15% || '''105.1''' || '''140.1'''
|[http://en.wikipedia.org/wiki/Food_energy human food to muscle work conversion efficiency] 15% || '''105.1''' || '''140.1'''
|}
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:One of the reasons why the solar option is so appealing. --[[User:Walter|Walter]] 21:11, 5 December 2007 (EST)

Revision as of 02:11, 6 December 2007

If the laptop battery is recharged using muscle power, it will impact the food a child needs. A simple conversion assuming a 90% efficient charging cycle and 15% efficient human food to muscle power conversion results in 105-140 calories of food required for each laptop recharge. Extra calories used due to thinking more aren't included!

NiMH LiFePO4
Wh 16.5 22.0
cal 14187.4 18916.6
kcal (aka food calories) 14.2 18.9
generator efficiency 90% 15.8 21.0
human food to muscle work conversion efficiency 15% 105.1 140.1
One of the reasons why the solar option is so appealing. --Walter 21:11, 5 December 2007 (EST)