Ricoh Company, Ltd.

Yoshifumi Ohba

Hiroko Ohkura

Yasutomo Aman

Masahiro Masuzawa

Yohei Shiren

A reaction material formed body into which a reaction material reacting with a reaction medium to store or release heat is formed includes first and second opposite surfaces and multiple heat transfer enhancing members extending at least from the first surface to the second surface. At least two or more of the heat transfer enhancing members are oriented in a predetermined single direction.

Reaction material formed body and heat storage and release unit

A reaction material for a chemical heat pump includes type III anhydrous gypsum, a magnesium compound, and CaMgSO. The reaction material for the chemical heat pump structurally changes between a compound including type III anhydrous gypsum, the magnesium compound, and CaMgSO, and a compound including hemihydrate gypsum, a hydrate of the magnesium compound, and a hydrate of CaMgSOwhen subjected to heat storage process and heat release process. x is 0&#x3c;x&#x3c;1.

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Kanagawa, Japan

Yoshifumi Ohba