This system utilizes three kinds of metal hydrides, MH1, MH2, and MH3, having the highest, an intermediate, and the lowest equilibrium hydrogen pressures, respectively, in the order mentioned, each kind of metal hydrides being enclosed in two sets of respective metal-hydride containers. While hydrog
This system utilizes three kinds of metal hydrides, MH1, MH2, and MH3, having the highest, an intermediate, and the lowest equilibrium hydrogen pressures, respectively, in the order mentioned, each kind of metal hydrides being enclosed in two sets of respective metal-hydride containers. While hydrogen flows from the metal hydride MH3 to the metal hydrides MH2 and MH1 in one set, hydrogen flows from the metal hydrides MH2 and MH1 metal hydride MH3 in other set such that the cold heat generated by hydrogen dissociation from the metal hydride MH2 in said other set is utilized to cool the metal hydride MH1 of said one set for efficient hydrogen absorption by the metal hydride MH1, and the cold heat generated by hydrogen dissociation from the metal hydride MH1 of said other set is provided for refrigeration. The two cycles operations are repeated interchangeablly between the two sets, enabling the system to maintain high operating hydrogen pressures associated with exothermic dissociation of hydrogen and allows continuous provision of cold heat for refrigeration at a temperature lower than conventional temperature.
대표청구항▼
A refrigeration system utilizing hydrogen and metal hydrides, said system including: two sets of multiple metal-hydride containers each accommodating therein hydrogen, a metal hydride, a hydrogen supply/release tube for connecting each said metal-hydride container with an external hydrogen conduit t
A refrigeration system utilizing hydrogen and metal hydrides, said system including: two sets of multiple metal-hydride containers each accommodating therein hydrogen, a metal hydride, a hydrogen supply/release tube for connecting each said metal-hydride container with an external hydrogen conduit tube, and a heat exchanger connected with an external heat transfer medium transport tube, heat radiation means, heating means, and cooling means, such that said heat exchangers in the first and the second sets of metal-hydride containers are interchangeably and alternately connected with said heating means and cooling means in a first and a second cycle of refrigeration, respectively, so that in said first cycle of refrigeration hydrogen is dissociated in one set of said first and the second sets of metal-hydride containers to absorb heat while hydrogen is absorbed in another one of said first and the second sets of metal-hydride containers to recover hydrogen dissociated in a current cycle, whereas in said second cycle of refrigeration hydrogen is absorbed in said one set of said two sets of metal-hydride containers to recover the hydrogen which was dissociated therefrom in said first cycle while hydrogen is dissociated from said metal hydrides in said another set of metal-hydride containers to remove heat, said first and second cycles being alternately repeated to continuously absorb heat from a refrigeration load, said system comprising: each of said two sets of metal-hydride containers comprises first, second, and third kinds of metal hydrides respectively having different equilibrium hydrogen pressures wherein said first kind of metal hydride has a lowest equilibrium hydrogen pressure, said second kind of metal hydride has a second lowest equilibrium hydrogen pressure, and said third kind of metal hydride has a highest equilibrium hydrogen pressure; in said first cycle, said first metal-hydride in said one of said two sets of containers is heated by said heating means to dissociate hydrogen which is then supplied to and absorbed by said second and third metal-hydrides, while in said another set of metal-hydride containers hydrogen is dissociated from said second and third metal-hydrides to remove heat with said dissociated hydrogen transferred to and absorbed by said first metal-hydride in the same set, said heat absorbed by said second metal-hydride utilized to cool said third metal hydride in said one set and said heat absorbed by said third metal hydride utilized for refrigeration of said refrigeration load; and in said second cycle, roles of said first and second sets are interchanged with respect to said first cycle.
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