REACTION VESSEL FOR CHEMICAL HEAT STORAGE WITH PARTICULAR FLOW PATHS

A reaction vessel (10) comprising a chemical heat storage material (30) for generating water vapor by reaction heat which is generated when the chemical heat storage material (30) reacts with water, and storing heat by heating to separate water from the chemical heat storage material (30); and a heat exchanger (40) that houses the chemical heat storage material (30). The heat exchanger (40) comprises a heat storage material housing space (42), a water flow path (44) comprised with a plurality of ejection outlets (50) in communication with the heat storage material housing space (42), a main tube (52) connected to an external water supply section, and a branch tube (54) in communication with the main tube (52) and the plurality of ejection outlets (50), and a heating medium flow path (46) through which a heating medium is caused to flow for heating the chemical heat storage material (30).