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Flow Boiling in Minigap in the Reversed Two-Phase Thermosiphon Loop

Author

Listed:
  • Michał Klugmann

    (Department of Energy and Industrial Apparatus, Gdańsk University of Technology, 80-233 Gdańsk, Pomorskie, Poland)

  • Paweł Dąbrowski

    (Department of Energy and Industrial Apparatus, Gdańsk University of Technology, 80-233 Gdańsk, Pomorskie, Poland)

  • Dariusz Mikielewicz

    (Department of Energy and Industrial Apparatus, Gdańsk University of Technology, 80-233 Gdańsk, Pomorskie, Poland)

Abstract

The paper presents the results of experimental investigations of a model of a heat exchanger featuring a minigap, which is perceived as an evaporator for an inverted thermosiphon. The system works with a single component test fluid. The tested evaporator generates pumping power in the test loop in a way similar to the mammoth pump. The tests regarded a module of the heat exchanger, consisting of a hot leg and a cold leg with the width by the length of 0.1 × 0.2 m, heated by a uniform heat flux. In the tests, the minigaps of 1, 2 and 3 mm were formed. Two fluids, namely, distilled water and ethanol, were tested in the facility. Two-phase flow structures for both working fluids and various operational parameters, together with comprehensive visualization material, are presented. The specifics of pressure changes and its influence on operating parameters and flow structure are discussed.

Suggested Citation

  • Michał Klugmann & Paweł Dąbrowski & Dariusz Mikielewicz, 2019. "Flow Boiling in Minigap in the Reversed Two-Phase Thermosiphon Loop," Energies, MDPI, vol. 12(17), pages 1-22, September.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:17:p:3368-:d:262958
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    References listed on IDEAS

    as
    1. Smyth, M. & Quinlan, P. & Mondol, J.D. & Zacharopoulos, A. & McLarnon, D. & Pugsley, A., 2018. "The experimental evaluation and improvements of a novel thermal diode pre-heat solar water heater under simulated solar conditions," Renewable Energy, Elsevier, vol. 121(C), pages 116-122.
    2. Zhao, Dongliang & Martini, Christine Elizabeth & Jiang, Siyu & Ma, Yaoguang & Zhai, Yao & Tan, Gang & Yin, Xiaobo & Yang, Ronggui, 2017. "Development of a single-phase thermosiphon for cold collection and storage of radiative cooling," Applied Energy, Elsevier, vol. 205(C), pages 1260-1269.
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    Cited by:

    1. Dominika Babička Fialová & Zdeněk Jegla, 2021. "Experimentally Verified Flow Distribution Model for a Composite Modelling System," Energies, MDPI, vol. 14(6), pages 1-24, March.
    2. Daniel Chludziński & Michał Duda, 2020. "A New Concept and a Test of a Bubble Pump System for Passive Heat Transport from Solar Collectors," Energies, MDPI, vol. 13(5), pages 1-16, March.

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