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OPTIMUM REFRIGERANTS FOR NON-IDEAL CYCLES: AN ANALYSIS EMPLOYING CORRESPONDING STATES.

Author(s) : MCLINDEN M. O.

Summary

THE PRINCIPLE OF CORRESPONDING STATES IS USED TO EVALUATE THE EFFECTS OF THE THERMODYNAMIC CHARACTERISTICS OF THE REFRIGERANT ON THE PERFORMANCE OF REFRIGERATION CYCLES. THE DESIRED CHARACTERISTICS, EXPRESSED IN TERMS OF THE CRITICAL TEMPERATURE AND IDEAL GAS HEAT CAPACITY (C) USING PROPANE AS THE REFERENCE FLUID, ARE EXAMINED. CYCLE PERFORMANCE AND THE RESULTING CONCLUSIONS ARE STRONG FUNCTIONS OF THE ASSUMPTIONS MADE. FOR THE BASELINE CYCLE, THERE ARE TRADE-OFFS BETWEEN A HIGH COP AND HIGH VOLUMETRIC REFRIGERATING CAPACITY ; LOW VALUES OF C, CORRESPONDING TO SIMPLE FLUIDS, YIELD THE HIGHEST COP. WHEN SIMPLE REPRESENTATIONS FOR SUBCOOLING AND/OR HEAT EXCHANGE BETWEEN THE LIQUID AND SUCTION LINES ARE ADDED, THE DEPENDENCE OF COP ON THE REFRIGERANT CRITICAL TEMPERATURE IS GREATLY REDUCED, AND THE OPTIMUM C IS MUCH HIGHER. THESE RESULTS INDICATE THAT MODIFICATIONS TO THE BASIC VAPOUR COMPRESSION CYCLE SHOULD BE CONSIDERED HCFCS.

Details

  • Original title: OPTIMUM REFRIGERANTS FOR NON-IDEAL CYCLES: AN ANALYSIS EMPLOYING CORRESPONDING STATES.
  • Record ID : 1991-1020
  • 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.
    69-79; 7 fig.; 13 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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