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SHORTENING THE DEFROST TIME ON A HEAT PUMP AIR CONDITIONER.

[In Japanese. / En japonais.]

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

Type of article: Article

Summary

METHODS TO SHORTEN THE DEFROST TIME HAVE BEEN CARRIED OUT ON A 0.75 KILOW HEAT PUMP AND THE ENERGY BALANCE DURING DEFROSTING HAS BEEN ANALYZED. THE FOLLOWING METHODS ARE EFFECTIVE IN SHORTENING THE DEFROST TIME: 1) INCREASING THE POWER INPUT TO THE COMPRESSOR DURING DEFROSTING ; 2) UTILIZING THE COMPRESSOR FOR THERMAL ENERGY STORAGE ; 3) REDUCING THE WATER LEFT IN THE OUTDOOR HEAT EXCHANGER FINS. A HEAT PUMP WITH THE NEW DEFROSTING SYSTEM WAS TESTED AND ITS DEFROST TIME WAS 1 MIN 55 S AS COMPARED WITH THE DEFROST TIME OF A CONVENTIONAL HEAT PUMP OF ABOUT 4 TO 5 MIN.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1986-1920
  • Languages: Japanese
  • Source: Trans. JAR - vol. 2 - n. 3
  • Publication date: 1985
  • Document available for consultation in the library of the IIR headquarters only.

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