Compositions – Frost-preventing – ice-thawing – thermostatic – thermophoric,...
Patent
1983-02-25
1984-04-10
Kittle, John E.
Compositions
Frost-preventing, ice-thawing, thermostatic, thermophoric,...
16510421, 165DIG4, C09K 500
Patent
active
044420161
ABSTRACT:
A method is disclosed for increasing the cycle stability of a latent heat accumulator medium consisting essentially of a pure or saturated sodium sulfate salt melt. The cycle stability is increased by adding sulfuric acid to the latent heat accumulator medium in an amount of from 0.5 to 3%, by weight, based on the weight of the latent heat accumulator medium. The pH value of the latent heat accumulator medium is lowered without precipitation of impurities or the occurance of supercooling in the latent heat accumulator medium.
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G. Kortum "Lehrbuch der Elektrochemie" (Weinheim 1952), pp. 314-316.
McGraw-Hill Encyclopedia of Science and Technology, vol. 2, (1960), p. 362.
"An Incongruent Heat-of-Fusion System . . . " Solar Energy, vol. 23 (1979), p. 343-350.
Lindner Friedrich
Scheunemann Kurt
Deutsche Forschungs-und Versuchsanstalt fur Luft- und Raumfahrt
Kittle John E.
Shah Mukund J.
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