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Generalized pressure drop correlation for evaporation and condensation in smooth and micro-fin tubes.

Author(s) : CHOI J. Y., KEDZIERSKI M. A., DOMANSKI P. A.

Summary

NIST micro-fin tube pressure drop data for R134a, R22, R125, R32, R407C, R410A and R32/R134a (25/27% mass) were regressed to a modified Pierre correlation. The NIST database was post-predicted with an average absolute residual of 10.8%. Further validations performed with extensive data from the literature on lubricant-free refrigerants showed that the average absolute residual between measurements and predictions did not exceed 17.6%. The condensation and evaporation pressure drops for different refrigerant/lubricant mixtures were predicted with average absolute residuals not exceeding 19.6% and 25.0%, respectively.

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Pages: 2001-5

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Details

  • Original title: Generalized pressure drop correlation for evaporation and condensation in smooth and micro-fin tubes.
  • Record ID : 2003-0609
  • Languages: English
  • Source: Thermophysical Properties and Transfer Processes of New Refrigerants.
  • Publication date: 2001/10/03

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