Chemical heat storage device

Abstract

A chemical thermal storage device includes a reactor and an adsorber connected to the reactor via a pipe. The reactor has a stack structure body having a plurality of plate-shaped heat generation parts and a plurality of heat exchange parts alternately stacked. The heat generation part has a thermal storage material that generates heat upon chemical reaction with NH 3 and desorbs NH 3 upon reception of waste heat, and a metal casing that contains the thermal storage material. The heat exchange part is a passage of exhaust gas and is constituted of a metal fin. The metal casings of the heat generation parts and the heat exchange parts are joined to each other by brazing, welding or the like.

1 . A chemical thermal storage device comprising:
 a reservoir that stores a reaction medium; and   a reactor that is connected to the reservoir and heats a fluid, wherein   the reactor includes a heat generation part that generates heat, and a heat exchange part made of a metal that forms a flow channel through which the fluid can flow and that transfers the heat generated in the heat generation part to the fluid, the reactor having a stack structure body having the heat generation part and the heat exchange part alternately stacked,   the heat generation part has a thermal storage material that generates the heat upon chemical reaction with the reaction medium and desorbs the reaction medium upon reception of the heat from the fluid, and a metal casing that contains the thermal storage material, and   the metal casing and the heat exchange part are joined to each other.   
     
     
         2 . The chemical thermal storage device according to  claim 1 , wherein the heat exchange part is disposed on an outermost side of the stack structure body in a stacking direction. 
     
     
         3 . The chemical thermal storage device according to  claim 1 , wherein
 the heat exchange part has a first metal layer, and second metal layers provided in such a way as to sandwich the first metal layer and having corrosion resistance to the fluid, and   heat conductivity of the first metal layer is higher than heat conductivity of the second metal layer.