System and method for rapid isothermal gas expansion and compression for energy storage
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United States of America Patent
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Aug 14, 2012
Grant Date -
N/A
app pub date -
Aug 27, 2010
filing date -
Jun 9, 2008
priority date (Note) -
Expired
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Abstract
The invention relates to systems and methods for rapidly and isothermally expanding gas in a cylinder. The cylinder is used in a staged hydraulic-pneumatic energy conversion system and includes a gas chamber (pneumatic side) and a fluid chamber (hydraulic side) and a piston or other mechanism that separates the gas chamber and fluid chamber while allowing the transfer of force/pressure between each opposing chamber. The gas chamber of the cylinder includes ports that are coupled to a heat transfer subassembly that circulates gas from the pneumatic side and exchanges its heat with a counter flow of ambient temperature fluid from a reservoir or other source.
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