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Thermal storage medium using a hydrate and apparatus thereof, and method for producing the thermal storage medium

  • US 7,246,506 B2
  • Filed: 01/05/2004
  • Issued: 07/24/2007
  • Est. Priority Date: 11/26/1999
  • Status: Expired due to Fees
First Claim
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1. A thermal storage apparatus for using a hydrate thermal storage medium comprising:

  • (a) a storage tank for storing a cooling medium liquid;

    (b) a refrigerating machine, connected with the storage tank via a pipe for cooling the cooling medium liquid, the cooling medium liquid circulating between the storage tank and the refrigerating machine; and

    (c) a thermal storage body immersed in the cooling medium liquid, wherein the thermal storage medium comprises a hermetically sealed container containing an aqueous solution which generates at least one hydrate selected from the group consisting of a primary hydrate and a secondary hydrate, wherein the primary hydrate has a smaller hydration number and a smaller heat capacity than the secondary hydrate, and wherein the secondary hydrate has a larger hydration number and a larger heat capacity than the primary hydrate.

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