Experimental study on condensation of a zeotropic mixture R1234ze(E) / R32 in a horizontal micro-fin tube

D. Baba, H. Nakahta, C. Kondou, Shigeru Koyama

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

    Abstract

    Heat transfer and pressure drop during condensation of a zeotropic refrigerant mixture R1234ze(E)/R32 (50/50 mass%) and pure refrigerants R1234ze(E) and R32 in a horizontal micro-fin tube are experimentally investigated in this paper. Experiments are conducted in the mass velocity range of 150 to 400 kg m-2s-1 at a constant inlet temperature 40°C. Tested micro-fin tube is made of copper, and its geometry is as follows: 6.05 mm in outer diameter, 5.21 mm in mean inside diameter, 0.26 mm in fin height, and 20 degree in spiral angle. The effects of mass velocity and the difference of pure and mixed refrigerants on heat transfer and frictional pressure drop characteristics are clarified. The measured heat transfer coefficient and frictional pressure drop of the zeotropic mixture are compared with several existing correlations.

    Original languageEnglish
    Title of host publication6th Asian Conference on Refrigeration and Air Conditioning, ACRA 2012
    PublisherChinese Association of Refrigeration (CAR)
    Pages810-817
    Number of pages8
    ISBN (Print)9781632660152
    Publication statusPublished - Jan 1 2012
    Event6th Asian Conference on Refrigeration and Air Conditioning, ACRA 2012 - Xi'an, China
    Duration: Aug 26 2012Aug 28 2012

    Publication series

    Name6th Asian Conference on Refrigeration and Air Conditioning, ACRA 2012

    Other

    Other6th Asian Conference on Refrigeration and Air Conditioning, ACRA 2012
    CountryChina
    CityXi'an
    Period8/26/128/28/12

    All Science Journal Classification (ASJC) codes

    • Electrical and Electronic Engineering

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  • Cite this

    Baba, D., Nakahta, H., Kondou, C., & Koyama, S. (2012). Experimental study on condensation of a zeotropic mixture R1234ze(E) / R32 in a horizontal micro-fin tube. In 6th Asian Conference on Refrigeration and Air Conditioning, ACRA 2012 (pp. 810-817). (6th Asian Conference on Refrigeration and Air Conditioning, ACRA 2012). Chinese Association of Refrigeration (CAR).