Clathrate forming medium and its use in thermal energy storage s

Details Clathrate forming medium and its use in thermal energy storage s Clathrate forming medium and its use in thermal energy storage s

1997-05-05

1998-07-14

Skane, Christine

Refrigeration

Processes

Congealing flowable material, e.g., ice making

62 59, 62 69, 252 67, 252 70, 16510417, 16510421, F25D 300, C09K 500

Patent

active

057786852

ABSTRACT:
An improved thermal energy storage system and a process for thermal energy storage and transfer are disclosed. The cooling medium, a clathrate forming mixture, comprises water, and a hydrofluorocarbon having at least three carbon atoms and a molecular diameter less than about 7 .ANG.. Preferably the hydrofluorocarbon is selected from hydrofluoropropanes and more preferably is selected from the group consisting of CHF.sub.2 CHFCHF.sub.2, CF.sub.2 HCF.sub.2 CH.sub.2 F, CF.sub.3 CHFCH.sub.2 F, CF.sub.3 CH.sub.2 CF.sub.2 H, CF.sub.3 CF.sub.2 CH.sub.3, CF.sub.3 CHFCF.sub.2 H, CF.sub.3 CH.sub.2 CF.sub.3, CF.sub.3 CF.sub.2 CF.sub.2 H, CH.sub.2 FCF.sub.2 CF.sub.3, CHF.sub.2 CF.sub.2 CH.sub.3, CF.sub.3 CF.sub.2 CF.sub.2 CH.sub.3, CF.sub.3 CF.sub.2 CF.sub.2 CF.sub.2 H, and CF.sub.3 CFHCFHCF.sub.3.

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Mori, Yasuhiko, et al., "Formation of Gas Hydrate with CFC Alternative R-134a", AIChE Journal, vol. 35, No. 7, Jul. 1986, pp. 1227-1228.

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