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STUDY OF THE PRIMARY EFFECTS OF VARIOUS MEANS OF REFRIGERANT FLOW CONTROL AND CAPACITY CONTROL ON THE SEASONAL PERFORMANCE OF A HEAT PUMP.

Author(s) : KRAKOW K. I., LIN S., MATSUKI K.

Summary

A STUDY OF THE PRIMARY EFFECTS OF VARIOUS MEANS OF REFRIGERANT MASS FLOW RATE CONTROL AND CAPACITY CONTROL ON THE SEASONAL PERFORMANCE OF A HEAT PUMP WAS MADE BY COMPUTER SIMULATION. FOUR BASIC MEANS OF REFRIGERANT MASS FLOW RATE CONTROL WERE SIMULATED: 1) SUPERHEAT CONTROL ; 2) CAPILLARY TUBE CONTROL ; 3) EVAPORATION PRESSURE CONTROL ; AND 4) VARIABLE-SPEED COMPRESSOR (AN INVERTER-CONTROLLED VARIABLE-SPEED COMPRESSOR IS USED). THE STUDY INDICATES THAT THE USE OF A VARIABLE-SPEED COMPRESSOR MAY IMPROVE THE SEASONAL PERFORMANCE FACTOR SIGNIFICANTLY AND RESULT IN AN ANNUAL ENERGY SAVING INCREASE OF APPROXIMATELY 5%. LIMITING THE CAPACITY OF A HEAT PUMP BY MEANS OF AN EXPANSION VALVE RESPONDING TO THE HEATING LOAD MAY NOT IMPROVE THE SEASONAL PERFORMANCE FACTOR.

Details

  • Original title: STUDY OF THE PRIMARY EFFECTS OF VARIOUS MEANS OF REFRIGERANT FLOW CONTROL AND CAPACITY CONTROL ON THE SEASONAL PERFORMANCE OF A HEAT PUMP.
  • Record ID : 1988-2457
  • Languages: English
  • Publication date: 1987
  • Source: Source: ASHRAE Trans.
    vol. 93; n. 2; 511-524; 9 fig.; 6 tabl.; 8 ref.; discuss.
  • Document available for consultation in the library of the IIR headquarters only.

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