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Visualization and Measurement of Swirling Flow of Dry Ice Particles in Cyclone Separator-Sublimator

Author

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  • Haruhiko Yamasaki

    (Department of Mechanical Engineering, Osaka Prefecture University, 1-1 Gakuen-Cho, Naka-ku, Sakai 599-8531, Japan
    Department of Mechanical Engineering, Osaka Metropolitan University, 1-1 Gakuen-Cho, Naka-ku, Sakai 599-8531, Japan)

  • Hiroyuki Wakimoto

    (Department of Mechanical Engineering, Osaka Prefecture University, 1-1 Gakuen-Cho, Naka-ku, Sakai 599-8531, Japan)

  • Takeshi Kamimura

    (Mayekawa MFG. Co., Ltd., 3-14-15 Botan, Koto-ku, Tokyo 135-8482, Japan)

  • Kazuhiro Hattori

    (Mayekawa MFG. Co., Ltd., 3-14-15 Botan, Koto-ku, Tokyo 135-8482, Japan)

  • Petter Nekså

    (SINTEF Energy Research, Sem Sælands vei 11, 7034 Trondheim, Norway)

  • Hiroshi Yamaguchi

    (Department of Mechanical Engineering, Doshisha University, Kyotanabe city, Kyoto 610-0321, Japan)

Abstract

The dry ice sublimation process of carbon dioxide (CO 2 ) is a unique, environmentally friendly technology that can achieve a temperature of −56 °C or lower, which is a triple point of CO 2 in CO 2 refrigeration systems. In this study, a cyclone separator-evaporator was proposed to separate dry ice particles in an evaporator. As an initial step before introducing the cyclone separator-evaporator into an actual refrigeration system, a prototype cyclone separator-evaporator was constructed to visualize dry ice particles in a separation chamber. A high-speed camera was used to visualize the non-uniform flow of dry ice particles that repeatedly coalescence and collision in a swirl section. Consequently, the dry ice particle size and the circumferential and axial velocities of dry ice were measured. The results show that the equivalent diameter of the most abundant dry ice particles in the cyclone separation chamber is 2.0 mm. As the inner diameter of the separation section decreases, dry ice particles coalesce and grow from an equivalent diameter of 4 mm to a maximum of 40 mm. In addition, the comparison of the experimental and simulation results shows that the drag force due to CO 2 gas flow is dominant in the circumferential velocity of dry ice particles.

Suggested Citation

  • Haruhiko Yamasaki & Hiroyuki Wakimoto & Takeshi Kamimura & Kazuhiro Hattori & Petter Nekså & Hiroshi Yamaguchi, 2022. "Visualization and Measurement of Swirling Flow of Dry Ice Particles in Cyclone Separator-Sublimator," Energies, MDPI, vol. 15(11), pages 1-17, June.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:11:p:4128-:d:831353
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    References listed on IDEAS

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    1. Fan Feng & Ze Zhang & Xiufang Liu & Changhai Liu & Yu Hou, 2020. "The Influence of Internal Heat Exchanger on the Performance of Transcritical CO 2 Water Source Heat Pump Water Heater," Energies, MDPI, vol. 13(7), pages 1-14, April.
    2. Aleksandras Chlebnikovas & Artūras Kilikevičius & Jaroslaw Selech & Jonas Matijošius & Kristina Kilikevičienė & Darius Vainorius & Giorgio Passerini & Jacek Marcinkiewicz, 2021. "The Numerical Modeling of Gas Movement in a Single Inlet New Generation Multi-Channel Cyclone Separator," Energies, MDPI, vol. 14(23), pages 1-18, December.
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    Cited by:

    1. Ding, Hongbing & Zhang, Yu & Dong, Yuanyuan & Wen, Chuang & Yang, Yan, 2023. "High-pressure supersonic carbon dioxide (CO2) separation benefiting carbon capture, utilisation and storage (CCUS) technology," Applied Energy, Elsevier, vol. 339(C).

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