Thermal energy storage material comprising hydrated compound and

Details Thermal energy storage material comprising hydrated compound and Thermal energy storage material comprising hydrated compound and

1980-02-27

1981-06-16

Pitlick, Harris A.

Compositions

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

126400, 16510411, C09K 506

Patent

active

042736676

ABSTRACT:
The thermal energy storage material comprises at least one hydrated compound (such as an inorganic salt) having a reversible transition to the anhydrous or a less hydrated form and a hydrogel, comprising a water-swollen cross-linked polymer formed by cross-linking a synthetic hydrophilic polymer by a covalent cross-linking mechanism, throughout which the compound is dispersed. The hydrogel is made by reacting a water-soluble or water-dispersible synthetic hydrophilic polymer, which is preferably linear and thermoplastic, with a cross-linking agent therefor in an aqueous medium containing the hydrated compound. The hydrophilic polymer, the aqueous medium and the hydrated compound are used in such amounts that the storage material contains a major proportion, by weight, of the hydrated compound and a minor proportion, by weight, of the cross-linked polymer.

REFERENCES:
patent: 4003426 (1977-01-01), Best et al.
patent: 4111189 (1978-09-01), Dizon
patent: 4209413 (1980-06-01), Kent et al.
"Conservation and Better Utilization of Electric Power by Means of Thermal Energy Storage and Solar Heating", Phase II--Prog. Report, No. NSF/RANN/SE/GI27976/72/4, 12/31/72, pp. 6-3-6-15. _
Chahroudi, "Suspension Media for Heat Storage Materials", Proc. of the Workshop on Solar Energy Subsystems for Heating/Cooling of Bldgs., Charlottesville, Va., Apr. 16-18, 1975, pp. 56-59. _

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