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GENERAL METHOD FOR THE THERMODYNAMIC EVALUATION OF HEAT PUMP WORKING FLUIDS.

Author(s) : ANGELINO G., INVERNIZZI C.

Type of article: Article, IJR article

Summary

SINCE RELIABLE TABLES OF THERMODYNAMIC PROPERTIES ARE UNAVAILABLE FOR MOST OF THE FLUIDSOF POTENTIAL INTEREST, A GENERAL METHOD WAS WORKED OUT WHICH REQUIRES A SMALL AMOUNT OF DATA TO EVALUATE THE ENERGY PERFORMANCE OF DIFFERENT FLUID CLASSES. CYCLE QUALITY, DEFINED AS THE RATIO OF ACTUAL TO IDEAL COP IS RECOGNIZED TO BE A FUNCTION OF THE COMPLEXITY OF THE FLUID MOLECULAR STRUCTURE, THE REDUCED TEMPERATURE AT WHICH EVAPORATION IS PERFORMED, THE TEMPERATURE LIFT EXPRESSED BY THE RATIO OF THE DIFFERENCE OF CONDENSATION AND EVAPORATION TEMPERATURES TO ABSOLUTECONDENSATION TEMPERATURE. FOR FLUIDS HAVING RATHER COMPLEX MOLECULES BOTH TECHNICAL FEASIBILITY AND ENERGY PERFORMANCE ARE UNSATISFACTORY UNLESS PRECOOLING OF THE LIQUID PRIOR TO EXPANSION IS APPLIED.

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Pages: 16-25

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Details

  • Original title: GENERAL METHOD FOR THE THERMODYNAMIC EVALUATION OF HEAT PUMP WORKING FLUIDS.
  • Record ID : 1988-2043
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 11 - n. 1
  • Publication date: 1988

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