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PERFORMANCE PREDICTIONS OF REFRIGERANT-OIL MIXTURES IN SMOOTH AND INTERNALLY FINNED TUBES. 2. DESIGN EQUATIONS.

Author(s) : SCHLAGER L. M., PATE M. B., BERGLES A. E.

Summary

EQUATIONS TO PREDICT THE HEAT TRANSFER AND PRESSURE DROP PERFORMANCE OF REFRIGERANT-OIL MIXTURES IN SMOOTH AND AUGMENTED TUBES ARE PRESENTED. THESE EQUATIONS ARE BASED ON DATA OBTAINED DURING AN EXPERIMENTAL TEST PROGRAM. VARIOUS CONCENTRATIONS UP TO 5% BY WEIGHT OF 150-AND 300-SUS NAPHTHENIC MINERAL OIL WERE TESTED, AND MASS FLUX WAS VARIED FROM 125 TO 400 KG/M2.S. NOMINAL EVAPORATION CONDITIONS WERE 276 K (3 DEG C) WITH INLET AND OULET QUALITIES OF 15 AND 85%, RESPECTIVELY. THE CONDENSATION CONDITIONS WERE 314 K (41 DEG C) WITH INLET AND OUTLET QUALITIES OF 85 AND 15%, RESPECTIVELY. PAST CORRELATIONS WERE INVESTIGATED TO DETERMINE IF THEY COULD ADEQUATELY PREDICT THE CURRENT DATA IN SOME CASES. STATISTICAL EQUATIONS ALSO WERE DEVELOPED BASED ON AVERAGE SYSTEM PARAMETERS.

Details

  • Original title: PERFORMANCE PREDICTIONS OF REFRIGERANT-OIL MIXTURES IN SMOOTH AND INTERNALLY FINNED TUBES. 2. DESIGN EQUATIONS.
  • Record ID : 1991-0577
  • Languages: English
  • Publication date: 1990
  • Source: Source: ASHRAE Trans.
    vol. 96; n. 1; 170-182; 8 fig.; 2 tabl.; 37 ref.; discuss.
  • Document available for consultation in the library of the IIR headquarters only.

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