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LABORATORY EXAMINATION AND SEASONAL ANALYSIS OF FROSTING AND DEFROSTING FOR AN AIR-TO-AIR HEAT PUMP.

Author(s) : MILLER W. A.

Summary

AN AIR-TO-AIR SPLIT-SYSTEM HEAT PUMP OF 9.7-KILOW CAPACITY WAS TESTED. THE COP, SYSTEM CAPACITY, AND COMPONENT EFFICIENCIES WERE MEASURED DURING STEADY-STATE AND FROSTING-DEFROSTING CONDITIONS IN THE HEATING MODE. CUMULATIVE FROSTING AND DEFROSTING LOSS COEFFICIENTS WERE CALCULATED, FROM WHICH EMPIRICAL FROSTING AND DEFROSTING ALGORITHMS WERE DEVELOPED FOR MODELLING OF FROSTING AND DEFROSTING LOSSES. SEASONAL ANALYSES INDICATE THAT THE TEST HEAT PUMP WITH TUBE-AND-WAVY-FIN OUTDOOR COIL HAD 1 TO 5% ENERGY LOSS DUE TO FROSTING AND DEMAND DEFROSTING ACCOUNTEDFOR ONLY AN ADDITIONAL 1 TO 3% YEARLY ENERGY LOSS.

Details

  • Original title: LABORATORY EXAMINATION AND SEASONAL ANALYSIS OF FROSTING AND DEFROSTING FOR AN AIR-TO-AIR HEAT PUMP.
  • Record ID : 1988-0317
  • Languages: English
  • Publication date: 1987
  • Source: Source: ASHRAE Trans.
    vol. 93; n. 1; 1474-1489; 10 fig.; 4 tabl.; 8 ref.; discuss.
  • Document available for consultation in the library of the IIR headquarters only.

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