Thermal energy storage compositions to provide heating and cooling capabilities
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United States of America Patent
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Jun 11, 1996
Issued Date -
N/A
app pub date -
Jun 7, 1995
filing date -
Nov 18, 1994
priority date (Note) -
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Abstract
The present invention relates to a thermal energy storage composition and a method for reducing rupture failures during freezing cycles of container devices holding aqueous phase change materials. The thermal energy storage composition of the present invention contains about 60 to about 96.5 weight percent water, about 3 to about 40 weight percent of one or a mixture of water-dispersible non-ionic surfactants, particularly alcohol ethoxylates, and preferably an anionic surfactant in an amount sufficient to reduce phase separation of the composition at elevated temperatures.
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