PURPOSE: To ensure efficient heating and cooling by providing a first solid reaction substance on the opposite sides of a plurality of fins and feeding a second reaction substance reacting on the first reaction substance to generate or absorb heat into a container thereby enhancing chemical reaction efficiency.
CONSTITUTION: Hydrogen entering from a duct 15 into a container 10 flows between fins 12 in the axial and radial directions and generates heat through chemical absorption to a hydrogen occlusion alloy 13. The heat reaches a water tube 11 through conduction and radiation and heats up the water in the water tube 11. When hydrogen is desorbed from the alloy 13, the allay 13 is heated by feeding hot water through the water tube 11. Desorbed hydrogen is discharged to the outside from the duct 15. When the alloy 13 is made thin, heat generated through chemical absorption transmits through the alloy 13 with a small temperature drop and reaches the water tube 11 through the fin 12.
DOI TAKESHI
HANI KIYOSHI
