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Title:
COMPRESSED AIR ENERGY STORAGE SYSTEM UTILIZING TWO-PHASE FLOW TO FACILITATE HEAT EXCHANGE
Document Type and Number:
WIPO Patent Application WO/2011/008321
Kind Code:
A3
Abstract:
A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the "pressure cell") partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.

Inventors:
FONG DANIELLE A (US)
CRANE STEPHEN E (US)
BERLIN EDWIN P JR (US)
Application Number:
PCT/US2010/031915
Publication Date:
March 24, 2011
Filing Date:
April 21, 2010
Export Citation:
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Assignee:
LIGHTSAIL ENERGY INC (US)
FONG DANIELLE A (US)
CRANE STEPHEN E (US)
BERLIN EDWIN P JR (US)
International Classes:
F01B21/02; F01B23/10; F01B29/04; F03C1/00
Foreign References:
US7140182B22006-11-28
US7086231B22006-08-08
US5121607A1992-06-16
US3877229A1975-04-15
Attorney, Agent or Firm:
CHO, Steve, Y. (PLLC6100 219th Street SW, Ste 58, Mountlake Terrace WA, US)
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