Heat-driven cooling generation method and apparatus using a metal hydride

摘要

PURPOSE: To enable freezing heat at a desired low temperature to be generated efficiently by utilizing a plurality of metal hydrides. ;CONSTITUTION: Metal hydrides of three kinds are denoted by MH₁, MH₂, MH₃ (M: metal) in the order of the high level of equilibrium hydrogen pressure. In the case of a good heat radiation efficiency, two sets of MH₂, MH₃ are used and, during a period of time when hydrogen is made to move from MH₃ to MH₂ in one set and from MH₂ to MH₃ in the other set, freezing heat generated by hydrogen dissociation from MH₂ in the other set is taken out. In the case where the heat radiation efficiency drops, two sets of MH₁, MH₂, MH₃ are used and, during a period of time when hydrogen is made to move from MH₃ to MH₂, MH₁ in one set and from MH₂, MH₁ to MH₃ in the other set, MH₁ in one set is cooled for hydrogen occlusion by utilizing heat generated by hydrogen dissociation from MH₂, in the other set, and freezing heat generated by hydrogen dissociation from MH₁ in the other set is taken out. By this method, freezing heat at a desired low temperature can be taken out stably and continuously at all times.;COPYRIGHT: (C)1993,JPO&Japio