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LIQUID AIR METHOD AND APPARATUS

  • US 20110132032A1
  • Filed: 11/29/2010
  • Published: 06/09/2011
  • Est. Priority Date: 12/03/2009
  • Status: Abandoned Application
First Claim
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1. A liquid air storage and energy recovery method comprising:

  • during an energy recovery phase, recovering energy from liquid air stored in a storage tank by pumping a stream of the liquid air to produce a pumped air stream, passing the pumped air stream through a regenerator such that refrigeration contained in the pumped air stream is stored within the regenerator and the pumped air stream warms within the regenerator to produce a pressurized air stream and expanding the pressurized air stream to produce power;

    during a liquid air storage phase, liquefying air to produce a liquid air stream and introducing the liquid air stream into the storage tank to produce the liquid air stored in the storage tank; and

    providing part of a refrigeration requirement for liquefying the air with the refrigeration stored in the regenerator, and providing another part of refrigeration by means of a liquefier.

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