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SHORTENING THE DEFROST TIME ON A HEAT PUMP AIR CONDITIONER.

Author(s) : KUWAHARA E., KAWAMURA T., YAMAZAKI M.

Summary

THE EXPERIMENT WAS CARRIED OUT USING A ONE HORSEPOWER (0.75 KILOW) HEAT PUMP, AND THE ENERGY BALANCE DURING DEFROSTING WAS ANALYZED. THE FOLLOWING METHODS ARE EFFECTIVE TO SHORTEN THE DEFROSTING TIME: (1) INCREASE IN POWER INPUT TO THE COMPRESSOR DURING DEFROSTING, (2) UTILIZATION OF THE COMPRESSOR FOR ENERGY STORAGE, AND (3) REDUCTION OF THE WATER LEFT ON THE OUTDOOR HEAT EXCHANGER. A HEAT PUMP WITH THE NEW DEFROSTING SYSTEM WAS CONSTRUCTED. ITS DEFROST TIME WAS 1 MINUTE AND 55 SECONDS AND THAT OF A CONVENTIONAL HEAT PUMP ABOUT 4 OR 5 MINUTES.

Details

  • Original title: SHORTENING THE DEFROST TIME ON A HEAT PUMP AIR CONDITIONER.
  • Record ID : 1987-1947
  • Languages: English
  • Publication date: 1986
  • Source: Source: ASHRAE Trans.
    vol. 92; n. 2A; 20-29; 10 fig.; 5 tabl.; 1 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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