Reversible phase change composition for storing energy

Details Reversible phase change composition for storing energy Reversible phase change composition for storing energy

1985-06-11

1987-01-20

Wax, Robert A.

Compositions

Frost-preventing, ice-thawing, thermostatic, thermophoric,...

C09K 506

Patent

active

046378880

ABSTRACT:
A reversible liquid/solid phase change composition for the storage of energy comprising a mixture of hydrated calcium bromide/calcium chloride and a modifier selected from KBr, KCl, or mixtures thereof, for modifying the semicongruent melting of the mixture to reduce the formation of crystalline CaBr.sub.2 and CaCl.sub.2 hydrate phases other than the hexahydrate phase. The composition is useful over a temperature range of from about 5.degree. to about 50.degree. C. and can be employed for the storage of coolness or heat, or as a buffer or heat sink to modulate diurnal swings in ambient temperature.

REFERENCES:
patent: 4272390 (1981-06-01), Lane et al.
patent: 4392971 (1983-07-01), Kimura et al.
patent: 4412931 (1983-11-01), Lane et al.
Feilchenfeld et al., "The Melting Point Adjustment of CaCl.sub.2.6H.sub.2 O by Addition of KCl or CaBr.sub.2.6H.sub.2 O," Sol. Energy, 1985, 34(2) 199-201 (CA 103: 73842).

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