Thermal energy storage using hydrated compound with...

Details Thermal energy storage using hydrated compound with... Thermal energy storage using hydrated compound with...

C - Chemistry, Metallurgy

09

K

31/34

C09K 5/00 (2006.01) C09K 5/06 (2006.01)

Patent

CA 1124502

- 1 - Abstract of the disclosure The thermal energy storage material comprise at least one hydrated compound such as an inorganic salt) having a transition temperature to the anhydrous or a less hydrated form in the range 10 to 100°C and a hydrogel, comprising a water-swollen cross-linked polymer formed by cross-linking a synthetic hydrophilic polymer by a covalent cross-linking mechanism, through- out 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.

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