Reusable heat pack containing supercooled solution and means...

Details Reusable heat pack containing supercooled solution and means... Reusable heat pack containing supercooled solution and means...

F - Mech Eng,Light,Heat,Weapons

24

J

128/130

F24J 1/00 (2006.01) B01D 9/00 (2006.01) F28D 20/02 (2006.01)

Patent

CA 1122495

Abstract of the Disclosure A heat pack is made by enclosing supercoolable aqueous sodium acetate solution together with a metallic activator strip in a sealed, flexible con- tainer. The activator strip is a flexible metal strip having one or more fissures or slits extending there- through. To prepare the heat pack for activation, its con- tents are first heated to a temperature above the melting point of sodium acetate to completely melt it. Thereafter, the sodium acetate solution is supercooled. Activation or crystallization of the sodium acetate (with evolution of heat) is produced by bending the activator strip.

283805

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