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EFFECTS OF EVAPORATOR FROSTING AND DEFROSTING ON THE PERFORMANCE OF AIR-TO-WATER HEAT PUMPS.

Author(s) : TASSOU S. A., MARQUAND C. J.

Type of article: Article

Summary

INVESTIGATES THE PERFORMANCE OF 8 KILOWATT AIR-TO-WATER HEAT PUMP OPERATING UNDER FROSTING CONDITIONS OVER A WIDE RANGE OF AMBIENT TEMPERATURES AND HUMIDITIES. THE RATE OF FROST FORMATION AND DEGRADATION IN THE HEAT PUMP PERFORMANCE DEPENDS ON BOTH TEMPERATURE AND HUMIDITY, AND STATES THAT THEIR EFFECTS SHOULD BE TAKEN INTO ACCOUNT WHEN DESIGNING DEFROST CONTROL MECHANISMS. THE AIR PRESSURE DIFFERENTIAL ACROSS THE EVAPORATOR GIVES AN ADEQUATE INDICATION OF THE LEVEL OF FROST AND CAN BE USED TO INITIATE THE DEFROST CYCLE. A DEFROST TIME OF 5 MINUTES WAS SUFFICIENT TO COMPLETELY REMOVE THE FROST FROM THE EVAPORATOR COIL. (INT. BUILD. SERV. ABSTR., GB., 23, N 1, 1988, 8, 88-00066.

Details

  • Original title: EFFECTS OF EVAPORATOR FROSTING AND DEFROSTING ON THE PERFORMANCE OF AIR-TO-WATER HEAT PUMPS.
  • Record ID : 1988-2028
  • Languages: English
  • Source: Appl. Energy - vol. 28 - n. 1
  • Publication date: 1987
  • Document available for consultation in the library of the IIR headquarters only.

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