Patent ID: 8474255
Filing Date: 2013-07-02
Classification: F15B,H02J

Abstract:
1. A compressed-gas energy storage and recovery system comprising: a cylinder assembly comprising a first pneumatic chamber for compressing gas to store energy and expanding gas to recover energy and a second pneumatic chamber, separated from the first pneumatic chamber; selectively fluidly connected to the first chamber, (i) a compressed-gas reservoir for storage of gas after compression and supply of compressed gas for expansion thereof, and (ii) a vent for exhausting expanded gas to atmosphere and supply of gas for compression thereof; a spray mechanism for introducing heat-transfer fluid within the first chamber of the cylinder assembly to exchange heat with gas therein, thereby increasing efficiency of the energy storage and recovery, the spray mechanism comprising a plurality of nozzles for collectively producing an aggregate spray filling substantially an entire volume of the first chamber; and a circulation apparatus for circulating the heat-transfer fluid to the spray mechanism, wherein the aggregate spray comprises a plurality of overlapping individual sprays each produced by one of the plurality of nozzles.