Phase change compositions
First Claim
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1. A composition useful in thermal energy storage comprising a cementitious matrix material selected from the group consisting of hydraulic cement, gypsum, lime, and plaster of paris;
- and plurality of pellets or granules containing a crystalline straight chain alkyl hydrocarbon or a mixture of crystalline, straight chain, alkyl hydrocarbons, said hydrocarbon(s) having at least 14 carbon atoms and a heat of fusion greater than 30 cal/g., and said pellet or granule being formed by a process consisting essentially of dissolving or dispersing said alkyl hydrocarbon(s) in a polymer and grinding or cutting said polymer, said polymer being sufficiently compatible with said alkyl hydrocarbon such that said alkyl hydrocarbon can be dissolved or dispersed in said polymer.
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Abstract
Compositions containing crystalline, long chain, alkyl hydrocarbons as phase change materials including cementitious compositions containing the alkyl hydrocarbons neat or in pellets or granules formed by incorporating the alkyl hydrocarbons in polymers or rubbers; and polymeric or elastomeric compositions containing alkyl hydrocarbons.
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10 Claims
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1. A composition useful in thermal energy storage comprising a cementitious matrix material selected from the group consisting of hydraulic cement, gypsum, lime, and plaster of paris;
- and plurality of pellets or granules containing a crystalline straight chain alkyl hydrocarbon or a mixture of crystalline, straight chain, alkyl hydrocarbons, said hydrocarbon(s) having at least 14 carbon atoms and a heat of fusion greater than 30 cal/g., and said pellet or granule being formed by a process consisting essentially of dissolving or dispersing said alkyl hydrocarbon(s) in a polymer and grinding or cutting said polymer, said polymer being sufficiently compatible with said alkyl hydrocarbon such that said alkyl hydrocarbon can be dissolved or dispersed in said polymer.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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