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Originally Posted by Aussie
Any comments about this new technology.
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It is not new. This has been discussed for at least 15 years.
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It seems to have some merit.
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It does have merit for applications that have frequent stop/start cycles. When you compress a gas (in the energy accumulator), the temperature rises rapidly (P*V is proportional to T). If you store this energy for a period of time any heat loss causes significant inefficiency. Insulation helps, but its best to use the accumulated energy quickly. This is NOT a viable technology as a Prius replacement.
Another interesting temporary energy storage system is the use of a flywheel. It has been discussed for more than 30 years.
JeffD - Engineering Professor