Heat transfer to non-azeotropic mixtures of refrigerants flowing in a horizontal evaporator tube

Suguru Yoshida, Hideo Mori, Takashi Matsunaga, Katsumi Ohishi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

The characteristics of the heat transfer to nonazeotropic refrigerant mixtures of HCFC22 and CFC114 flowing in a horizontal evaporator tube were experimentally investigated. The heat transfer to the mixture was significantly degraded due to a mass transfer resistance in the region where nucleate boiling contributes substantially to the heat transfer, but such degradation was little in the forced convection dominated region. This little effect of the mass transfer resistance in the forced convection dominated region was theoretically confirmed based on a convective evaporation model for an annular two-phase flow of the mixture. A circumferential variation of the heat transfer coefficient, which was observed in the annular two-phase flow of the mixture, was theoretically explained to be attributed to the circumferential composition variation caused by the nonuniform liquid film thickness.

Original languageEnglish
Title of host publicationProc 3 ASME JSME Therm Eng Jt Conf
PublisherPubl by ASME
Pages295-300
Number of pages6
ISBN (Print)0791806138
Publication statusPublished - Dec 1 1991
EventProceedings of the 3rd ASME/JSME Thermal Engineering Joint Conference Part 2 (of 5) - Reno, NV, USA
Duration: Mar 17 1991Mar 22 1991

Publication series

NameProc 3 ASME JSME Therm Eng Jt Conf

Other

OtherProceedings of the 3rd ASME/JSME Thermal Engineering Joint Conference Part 2 (of 5)
CityReno, NV, USA
Period3/17/913/22/91

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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