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THERMODYNAMIC PERFORMANCE LIMIT AND EVAPORATOR DESIGN CONSIDERATIONS FOR NARM-BASED DOMESTIC REFRIGERATOR-FREEZER SYSTEMS.

Author(s) : SMITH M. K.

Summary

NON-AZEOTROPIC REFRIGERANT MIXTURES (NARMS) ARE INVESTIGATED FOR A TWO-TEMPERATURE LEVEL HEAT EXCHANGE PROCESS FOUND IN A DOMESTIC REFRIGERATOR-FREEZER. THE RESULTS ALLOW THE EFFECTS OF INTERCOOLING BETWEEN THE EVAPORATOR REFRIGERANT STREAM AND THE CONDENSER OUTLET STREAM TO BE EXAMINED IN A SYSTEMATIC MANNER. AN IDEALIZED NARM SYSTEM HAS A LIMITING COP THAT IS LESS THAN THAT OF THE BEST PERFORMINGPURE REFRIGERANT COMPONENT. HOWEVER, FOR NON-IDEAL HEAT EXCHANGE PROCESSES (GLIDING AIR TEMPERATURE), THE NARM-BASED SYSTEM HAS A HIGHER LIMITING COP THAN A SYSTEM RUNNING ON EITHER PURE NARM COMPONENT. THREE PAIRS, R22-R142B, R22-R123 AND R32-R142B, WERE STUDIED, BUT ONLY THE RESULTS FOR R22-R123 WILL BE PRESENTED BECAUSE OF ITS UNIQUE TEMPERATURE GLIDE CURVATURE.

Details

  • Original title: THERMODYNAMIC PERFORMANCE LIMIT AND EVAPORATOR DESIGN CONSIDERATIONS FOR NARM-BASED DOMESTIC REFRIGERATOR-FREEZER SYSTEMS.
  • Record ID : 1991-1168
  • 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.
    334-343; 7 fig.; 15 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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