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Experimental observation of two phase flow of R123 inside a herringbone microfin tube

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Abstract

Vapor-liquid two phase flow behavior of R123 inside herringbone microfin tubes has been studied. Herringbone microfin tube is a kind of internally finned tube in which microfins are installed inside the tube where the microfins form multi-V-shape in flow direction. For the present experiment three different types of herringbone microfin tubes with helix angle β=8°, 14° and 28° are used. Experimental observations showed how flow diverges and converges inside herringbone microfin tube due to fin arrangement. The effect is more remarkable for larger helix angle. From the measurements of the cross-sectional liquid flow rate distribution, the liquid removal and collection and the entrained droplet are discussed. Quantity of liquid droplets is increased with increase of helix angle. The tube with helix angle β=28° shows higher quantity of liquid droplets than others.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Saga University, 1 Honjomachi, 840-8502, Saga-shi, Japan

    Akio Miyara

  2. Graduate School of Science and Engineering, Saga University, 1 Honjomachi, 840-8502, Saga-shi, Japan

    Mohammad Ariful Islam, Yoshihiko Mizuta & Atsushi Kibe

Authors
  1. Akio Miyara
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  2. Mohammad Ariful Islam
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  3. Yoshihiko Mizuta
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  4. Atsushi Kibe
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Miyara, A., Islam, M.A., Mizuta, Y. et al. Experimental observation of two phase flow of R123 inside a herringbone microfin tube. J. of Therm. Sci. 12, 270–274 (2003). https://doi.org/10.1007/s11630-003-0081-1

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  • DOI: https://doi.org/10.1007/s11630-003-0081-1

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