Flywheel statistic confusion

  • #1

Main Question or Discussion Point

In my exploration of energy storage options i came across a statistic several times that given a vacuum and magnetic bearings, a flywheel can achieve 97% storage efficiency.

Whether its true or not, what does 97% represent? Does it imply that the energy will hold regardless of time and its a one time transfer loss or do you lose 3% per period of time.

If i find the source ill post the link.
 

Answers and Replies

  • #2
russ_watters
Mentor
19,705
6,047
It must assume a certain time period -- or perhaps that's over 0 time.
 

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