Patent ID: 8450884
Filing Date: 2013-05-28
Classification: F01B,F01K,F02C,F03D,F04B,F28D,G05B,H02K,H02P,Y02B,Y02E,Y02T,Y10T

Abstract:
1. An apparatus comprising: a first reversible gas compressor/expander configured to effect gas-liquid heat exchange with gas being compressed or expanding within a first chamber; a second reversible gas compressor/expander configured to effect gas-liquid heat exchange with gas being compressed or expanding within a second chamber; and a network of gas conduits and valves allowing selective fluid communication between the first reversible gas compressor/expander, the second reversible gas compressor/expander, a compressed gas storage unit, and a counter-flow heat exchanger, the network of gas conduits and valves selectively operable in one of the following modes: