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Semi-Analytical Model for Heat and Mass Transfer Evaluation of Vapor Bubbling

Author

Listed:
  • Giuseppe Starace

    (Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy)

  • Lorenzo Carrieri

    (Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy)

  • Gianpiero Colangelo

    (Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy)

Abstract

Multi-stage refrigeration systems cover a wide range of possibilities and are diffusing more and more. The idea that inspired this work derived from the need to have a tool to model the energy behavior of the intercooler inside a multi-stage refrigeration system. In this work, a semi-analytical model of a single bubble, injected into the liquid of an intercooler of a multi-stage system, has been developed. The developed model is a set of equations derived from the Fourier equation for heat conduction in defined conditions and includes the effects of sensible and latent heat. The vapor bubble is supposed to be injected in the saturated liquid contained in a tank at a defined depth, at an intermediate pressure. The model has been implemented in Matlab and the results show the influence of the liquid surface tension, the injection depth and the thermal diffusivity of the vapor. The model developed here is a useful low-cost tool for evaluating heat transfer optimization of a separator/intercooler of a multi-stage refrigeration system.

Suggested Citation

  • Giuseppe Starace & Lorenzo Carrieri & Gianpiero Colangelo, 2020. "Semi-Analytical Model for Heat and Mass Transfer Evaluation of Vapor Bubbling," Energies, MDPI, vol. 13(5), pages 1-17, March.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:5:p:1104-:d:327292
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    References listed on IDEAS

    as
    1. Zhexuan Xu & Junhong Zhang & Jiewei Lin & Tianshu Xu & Jingchao Wang & Zefeng Lin, 2018. "An Overall Bubble Diameter Model for the Flow Boiling and Numerical Analysis through Global Information Searching," Energies, MDPI, vol. 11(5), pages 1-20, May.
    2. Pavel Lobanov & Maksim Pakhomov & Viktor Terekhov, 2019. "Experimental and Numerical Study of the Flow and Heat Transfer in a Bubbly Turbulent Flow in a Pipe with Sudden Expansion," Energies, MDPI, vol. 12(14), pages 1-18, July.
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    Cited by:

    1. Mikhail A. Sheremet, 2021. "Numerical Simulation of Convective-Radiative Heat Transfer," Energies, MDPI, vol. 14(17), pages 1-3, August.

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