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CHARACTERISTICS OF A COMPRESSION TYPE HEAT PUMP USING METAL HYDRIDE.

[In Japanese. / En japonais.]

Author(s) : YONETA M., ITOH Y., WATANABE K.

Type of article: Article

Summary

THE AUTHORS HAVE STUDIED THE OPERATING PERFORMANCE OF A LARGE-SCALE METAL HYDRIDE HEAT PUMP WHICH UTILIZES A HYDROGEN COMPRESSOR. GENERALLY, THE HYDRIDING REACTION OF HYDROGEN STORAGE ALLOY IS EXOTHERMIC, AND CAUSES A RISE IN THE ALLOY'S TEMPERATURE. THE DEHYDRIDING REACTION IS ENDOTHERMIC. THE AUTHORS ADOPTED THE < SHELL AND TUBE TYPE > HEAT EXCHANGER, WHICH HAS MIDDLE FIN TUBES MADE OF COPPER. IN THIS HEAT EXCHANGER, THERE IS A METAL POWDER COMPOSED OF CALCIUM, NICKEL, MISCH METAL AND ALUMINUM, AND THE HEAT IS TRANSFERRED THROUGH THE METAL POWDER AND COPPER FIN TUBES TO THE WATER IN THE TUBES. THE HYDROGEN PRESSURE IN THE SHELL IS CONTROLLED BY A HYDROGEN COMPRESSOR. THE AUTHORS DISCUSS THE RELATIONS BETWEEN HEAT OUTPUT, CYCLE TIME, HYDROGEN MASS FLOW AND TEMPERATURE OF HOT WATER. THE HEAT OUTPUT VALUE IS THE HIGHEST IN THE WORLD FOR A METAL HYDRIDE HEAT PUMP SYSTEM USING A HYDROGEN COMPRESSOR.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1989-2454
  • Languages: Japanese
  • Source: Transaction of the Society of Heating, Air-conditioning and Sanitary Engineers of Japan - n. 39
  • Publication date: 1989
  • Document available for consultation in the library of the IIR headquarters only.

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