Experimental study on flow boiling of HFC134a in a multi-port extruded tube

Ken Kuwahara, Shigeru Koyama, Kengo Kazari

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

    3 Citations (Scopus)

    Abstract

    In the present study, the local heat transfer and pressure drop characteristics are investigated experimentally for the flow boiling of refrigerant HFC134a in a multi-port extruded tube of 1.06mm in hydraulic diameter. The test tube is 865mm in total length made of aluminum. The pressure drop is measured at an interval of 191 mm, and the local heat transfer coefficient is measured in every subsection of 75mm in effective heating length. Experimental ranges are as follows: the mass velocity of 0=100 - 700 kg/m 2s, the inlet temperature of Tin=5.9 - 11.4 °C and inlet pressure of about 0.5 MPa. The data of pressure drop are compared with a few previous correlations for small diameter tubes, and the correlations can predict the data relatively good agreement. The data of heat transfer coefficient is compared with the correlation of Yu et al. proposed for relatively large diameter tubes. It is found that there are some differences about two phase multiplier factor of convective heat transfer between the circular channel and rectangular channel.

    Original languageEnglish
    Title of host publicationProceedings of the Second International Conference on Microchannels and Minichannels (ICMM2004)
    EditorsS.G. Kandlikar, G.P. Celata, S. Nishio, P. Stephan, B. Thonon
    Pages531-537
    Number of pages7
    Publication statusPublished - 2004
    EventProceedings of the Second International Conference on Microchannels and Minichannels (ICMM2004) - Rochester, NY, United States
    Duration: Jun 17 2004Jun 19 2004

    Other

    OtherProceedings of the Second International Conference on Microchannels and Minichannels (ICMM2004)
    CountryUnited States
    CityRochester, NY
    Period6/17/046/19/04

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    All Science Journal Classification (ASJC) codes

    • Engineering(all)

    Cite this

    Kuwahara, K., Koyama, S., & Kazari, K. (2004). Experimental study on flow boiling of HFC134a in a multi-port extruded tube. In S. G. Kandlikar, G. P. Celata, S. Nishio, P. Stephan, & B. Thonon (Eds.), Proceedings of the Second International Conference on Microchannels and Minichannels (ICMM2004) (pp. 531-537)