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Comparison of condensation heat transfer coefficients of refrigerants and their substitutes flowing between parallel plates.

Author(s) : LOUAHLIA H., PANDAY P. K.

Summary

Film condensation of pure vapour flowing between parallel plates was treated numerically. The boundary layer equations for the two phases were solved using an implicit finite difference scheme. The inertia, enthalpy convection and pressure gradient terms were retained in the analysis. Three different turbulence models were tested for the two phases. The results show that the model of Pletcher, applied to both phases, gives heat transfer coefficients close to those measured. Different results were obtained for Nusselt number and heat transfer coefficients, depending on the variation of different parameters. The thermal performances (heat transfer and pressure drop) of R123 and R11 are nearly the same. R142b performed better than R114, and R134a performed better than R12 and R22.

Details

  • Original title: Comparison of condensation heat transfer coefficients of refrigerants and their substitutes flowing between parallel plates.
  • Record ID : 1997-2774
  • Languages: English
  • Source: Heat transfer in condensation. Proceedings of the Eurotherm Seminar 47.
  • Publication date: 1995/10/04
  • Document available for consultation in the library of the IIR headquarters only.

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