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Non-Tech : Alternative energy
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To: Jacob Snyder who wrote (7915)4/22/2010 9:32:18 AM
From: Jim S  Read Replies (1) of 16955
 
Thanks for the reply, Jacob. An excellent pump and a similar generator might each have an efficiency of 80%. 0.8 x 0.8 = 0.64, or 64% efficiency to store the energy. Then to reclaim the stored energy, if an excellent turbine is used, also at 80% efficiency, you get 0.8 x 0.64 = 0.512, or about 50% efficiency for the system.

50% ain't much to write home about. <GGG>

To make matters worse, I doubt that most components in such a system are really at an 80% efficiency level.
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