Heat accumulative material

Details Heat accumulative material Heat accumulative material

1982-07-06

1984-01-17

Kittle, John E.

Compositions

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

564 63, 564215, 562575, 562607, C09K 506

Patent

active

044263074

ABSTRACT:
A novel latent heat accumulative material capable of accumulating heat in a temperature range best suited for the storage of solar energy was obtained by adding an organic compound or compounds such as urea [CO(NH.sub.2).sub.2 ]to a system consisting of sodium acetate (CH.sub.3 CO.sub.2 Na) and water (H.sub.2 O). Further addition of a crystal nucleus forming material or materials such as sodium pyrophosphate decahydrate (Na.sub.4 P.sub.2 O.sub.7.10H.sub.2 O) to said composition could minimize supercooling and allowed a wider scope of application of the present heat accumulative material.

REFERENCES:
patent: 3559594 (1971-02-01), Miller
Hargraves, W. A. & Kresheck, G. C., "The Partial Molal Volume of Several Alcohols, Amino Acids, Carboxylic Acids and Salts in 6M Urea at 25.degree.," J. Phys. Chem, 73 (10), 1969, pp. 3249-3254.

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