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OIL IN EVAPORATORS: HEAT TRANSFER OF OIL/REFRIGERANT MIXTURES.

L'HUILE DANS LES EVAPORATEURS : TRANSFERT DE CHALEUR DES MELANGES HUILES/FRIGORIGENES.

Author(s) : MALEK A.

Type of article: Article

Summary

THE MISCIBILITY OF REFRIGERANT AND OIL VARIES ACCORDING TO THE COMPONENTS, THEIR PROPORTIONS, THE TEMPERATURE, THE PRESSURE, AND THE VISCOSITY OF THE MIXTURE DIFFERS MUCH FROM THAT OF THE OIL. THE THERMOPHYSICAL CHARACTERISTICS OF THE MIXTURE BEING DIFFERENT FROM THOSE OF THE REFRIGERANT ALONE CAUSE THE HEAT TRANSFER IN THE EVAPORATOR TO BE MODIFIED. THE EXPERIMENTAL RESULTS OF THE STUDIES CARRIED OUT ON HEAT TRANSFER ARE GIVEN IN THEFOLLOWING CASES: ON PLANE WALLS, ON SMOOTH TUBES, ON FINNED TUBES AND INSIDE THE TUBES. IT IS NOT POSSIBLE TO INFER A GENERAL LAW ON THE BEHAVIOUR OF MIXTURES. IT IS WORTH STUDYING SPECIALLY THE CASE OF EXCHANGERS WITH POROUS SURFACES OR WITH CAVITIES. FURTHERMORE, MANY MORE INVESTIGATIONS OF MIXTURE PROPERTIES ARE STILL CEAYJ.L.

Details

  • Original title: L'HUILE DANS LES EVAPORATEURS : TRANSFERT DE CHALEUR DES MELANGES HUILES/FRIGORIGENES.
  • Record ID : 1989-2250
  • Languages: French
  • Source: La revue pratique du froid et du conditionnement d'air - vol. 44 - n. 678
  • Publication date: 1989
  • Document available for consultation in the library of the IIR headquarters only.

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