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DESIGN AND PRELIMINARY ANALYSIS FOR MEASURING TRANSIENT MASS RATE OF FLOW IN UNITARY HEAT PUMPS.

Author(s) : BELTH M. I., TREE D. R.

Summary

MATHEMATICAL MODELS OF HEAT PUMPS HAVE BEEN DEVELOPED. THESE MODELS AND EXPERIMENTAL WORK SHOW THAT REFRIGERANT MOVEMENT AND/OR MIGRATION DURING START-UP, SHUT-DOWN AND FROSTING-DEFROSTING IS AN IMPORTANT PARAMETER. LITTLE INFORMATION IS KNOWN ABOUT THIS MOVEMENT. THEREFORE, GOOD EXPERIMENTAL DATA OF MASS FLOW RATE INTO AND OUT OF EACH COMPONENT OF THE HEAT PUMP DURING THESE TRANSIENT TIMES ARE NEEDED. THE PAPER DESCRIBES THE SYSTEM DESIGNED, THE MAJOR PROBLEM ENCOUNTERED, AND GIVES SOME PRELIMINARY RESULTS OF A SYSTEM TO CONTINUOUSLY MEASURE THE CHANGE IN REFRIGERANT MASS IN THE EVAPORATOR, CONDENSER, ACCUMULATOR AND COMPRESSOR DURING BOTH START-UP AND SHUT-DOWN CONDITIONS. THE MASS RATE OF FLOW ENTERING AND LEAVING EACH COMPONENT CAN BE DETERMINED.

Details

  • Original title: DESIGN AND PRELIMINARY ANALYSIS FOR MEASURING TRANSIENT MASS RATE OF FLOW IN UNITARY HEAT PUMPS.
  • Record ID : 1987-1140
  • Languages: English
  • Publication date: 1986
  • Source: Source: ASHRAE Trans.
    vol. 92; n. 1B; 843-853; 13 fig.; 6 ref.; discuss.
  • Document available for consultation in the library of the IIR headquarters only.

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