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Spray evaporation heat transfer performance of R123 in tube bundles.

Author(s) : MOEYKENS S. A., KELLY J. E., PATE M. B.

Summary

The study focuses on evaluating the heat transfer performance of refrigerant R123 in the spray evaporation environment for pure refrigerant and for the case of lubricant addition. Tests were conducted with triangular-pitch tube bundles and square-pitch tube bundles, so that a comparison could be made between the square- and triangular-pitch geometries. In addition to pure refrigerant work, experiments were performed with small concentrations of a 305 SUS naphthenic mineral oil to evaluate its effect on falling-film heat transfer performance. Refrigerant was introduced to the test section via low-pressure-drop, wide-angle nozzles located directly over the tube bundle. It was found that the heat transfer coefficients were dependent upon film-feed supply rate, oil concentration, and heat flux. Results are given.

Details

  • Original title: Spray evaporation heat transfer performance of R123 in tube bundles.
  • Record ID : 1997-2054
  • Languages: English
  • Source: ASHRAE Transactions.
  • Publication date: 1996/06/23
  • Document available for consultation in the library of the IIR headquarters only.

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