HYDROGEN OCCLUDED ALLOY-BASED HEAT APPLICATION SYSTEM

摘要

PURPOSE:To maintain the safety easily and prevent an increase in the loss of sensible heat by turning a first hydrogen occluded alloy and a second hydrogen occluded alloy into an alloy having a specified working pressure during a regeneration process. CONSTITUTION:MH1 and MH2 are adapted to comprise an alloy whose working pressure is 20atm or below. As for the MH1 or MH2, their minimum differential pressure required to absorb and discharge reversibly hydrogen gas whose effective hydrogen transfer volume is 0.6wt and over, is arranged to be 0.8 or below in terms of a differential natural logarithm. Furthermore, the MH1 is hydrogen occluded alloy in MgZn2 type Laves phases structure which contains Zr, M, and Co while the MH2 is a hydrogen occluded alloy in AB5 type hexcrystal structure which contains rare earth elements, Ni, and a first transfer metal element and selectively contains at least one element out of Al and Sn. When the MH1 for a vessel 1 is cooled and maintained at an ambient temperature and an ON/OFF valve 8 is opened, the MH2 for a vessel 4 discharges hydrogen, transfers the hydrogen to the MH1 from a transfer channel 6 so that it may be absorbed while the MH2 itself generates cold heat at a temperature of about minus 35 by endothermic action induced by discharged reaction, and gives the generated heat to refrigerating load 13 by way of a heat exchanger 5.