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Studies on the heat storage system in which heat storage medium is concentrated using a compression type heat pump. 1. Principle and characteristics of heat storage and release.

[In Japanese. / En japonais.]

Author(s) : YAMADA A., ONODA R., EBARA K., ENOMOTO H.

Type of article: Article

Summary

A new type heat storage system was proposed, in which the heat storage medium is concentrated by using the latent heat generated during both condensation and evaporation processes of the compression type heat pump refrigerant, while chilled water is cooled through the heat storage medium dilution process. A full scale apparatus, having a capacity of 70 kilowatts, was constructed, the performances of several heat exchangers were evaluated regarding efficiency of operation. Sufficient cooling heat was generated during the heat storage medium dilution process under a peak load during daytime, while heat was stored during the medium concentration process using the heat pump at night. The heat storage capacity of 560,000 kilojoules/m3 was obtained. The limiting steps were clarified by measuring the total heat transfer coefficients of several heat exchangers, then methods to improve the performance were discussed.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1994-2535
  • Languages: Japanese
  • Source: Transaction of the Society of Heating, Air-conditioning and Sanitary Engineers of Japan - n. 53
  • Publication date: 1993/10
  • Document available for consultation in the library of the IIR headquarters only.

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