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INITIAL PARAMETRIC RESULTS USING CYCLEZ: A LAG MEAN TEMPERATURE DIFFERENCE SPECIFIED, LORENTZ-MEUTZNER CYCLE REFRIGERATOR-FREEZER MODEL.

Author(s) : RICE C. K., SAND J. R.

Summary

A COMPUTER MODEL IS BEING USED TO ASSESS THE EFFECTS OF SYSTEM DESIGN AND OPERATING PARAMETERS ON THE CYCLE PERFORMANCE OF A REFRIGERATOR-FREEZER DESIGNED AROUND THE LORENTZ-MEUTZNER CIRCUIT. THE REFRIGERATOR-FREEZER MODEL IS DERIVED FROM A HEAT PUMP MODEL. IT USES THE CARNAHAN-STARLING-DESANTIS EQUATION OF STATE TO COMPUTE REFRIGERANT THERMODYNAMIC PROPERTIES, SO THAT NEW REFRIGERANTS CAN EASILY BE ADDED. PARAMETRIC INVESTIGATIONS INVOLVED 19 REFRIGERANT COMBINATIONS WHICH ARE UNDER CONSIDERATION FOR THIS APPLICATION. EFFECTS OF THE DISTRIBUTION OF HEAT-EXCHANGER AREA, EXTENT AND DISTRIBUTION OF INTERCOOLER SUBCOOLING/SUPERHEAT, REFRIGERANT MIXTURE COMPOSITION, AND RELATIVE REFRIGERATOR-FREEZER LOADIND WERE INVESTIGATED. THE MODEL INDICATES THAT IMPROVEMENTS OF 10 TO 20% IN COP ARE POSSIBLE USING MIXED REFRIGERANTS COMPARED WITH THE STANDARD CIRCUIT USING R12.

Details

  • Original title: INITIAL PARAMETRIC RESULTS USING CYCLEZ: A LAG MEAN TEMPERATURE DIFFERENCE SPECIFIED, LORENTZ-MEUTZNER CYCLE REFRIGERATOR-FREEZER MODEL.
  • Record ID : 1991-1167
  • Languages: English
  • Publication date: 1990/07/17
  • Source: Source: USNC-IIR/Proc. 1990 Refrig. Conf., Purdue Univ./ASHRAE, Purdue CFC Conf./Purdue Univ., Ray W. Herrick Lab., Sch. mech. Eng.
    448-458; 6 fig.; 1 tabl.,13 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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