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Numerical Analysis on the Performance of a Radiant Cooling Panel with Serpentine-Based Design

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  • Mohammad Hakim Mohd Radzai

    (Department of Mechanical Engineering, University Tenaga Nasional, Jalan IKRAM-UNITEN, Kajang 43000, Selangor, Malaysia)

  • Chong Tak Yaw

    (Institute of Sustainable Energy, University Tenaga Nasional, Jalan IKRAM-UNITEN, Kajang 43000, Selangor, Malaysia)

  • Chin Wai Lim

    (Department of Mechanical Engineering, University Tenaga Nasional, Jalan IKRAM-UNITEN, Kajang 43000, Selangor, Malaysia)

  • Siaw Paw Koh

    (Institute of Sustainable Energy, University Tenaga Nasional, Jalan IKRAM-UNITEN, Kajang 43000, Selangor, Malaysia)

  • Nur Amirani Ahmad

    (Department of Mechanical Engineering, University Tenaga Nasional, Jalan IKRAM-UNITEN, Kajang 43000, Selangor, Malaysia)

Abstract

Radiant cooling systems (RCS) are gaining acceptance as a heating, ventilation, and air conditioning (HVAC) solution for achieving adequate thermal comfort and maintaining acceptable indoor air quality inside buildings. RCS are well known for their energy-saving potential; however, serious condensation problem hinders the growth of this technology. In order to prevent the risk of condensation, the supply water temperature is kept higher than the dew point temperature of the air inside the room. The full potential of the cooling power of a radiant cooling panel is limited. Therefore, this article is on maximizing the cooling capacity of a radiant cooling panel, in terms of flow configuration. Radiant cooling panels (RCP) with different chilled water pipe configurations are designed and compared, side by side with the conventional serpentine flow configuration. The cooling performance of the radiant cooling panels is evaluated by using computational fluid dynamics (CFD) with Ansys Fluent software (Ansys 2020 R2, PA, USA). Under similar flow and operating conditions, the common serpentine flow configuration exhibits the least effective cooling performance, with the highest pressure drop across the pipe. It is concluded that the proposed designs have the potential of improving the overall efficiency of RCP in terms of temperature distribution, cooling capacity, and pressure drop.

Suggested Citation

  • Mohammad Hakim Mohd Radzai & Chong Tak Yaw & Chin Wai Lim & Siaw Paw Koh & Nur Amirani Ahmad, 2021. "Numerical Analysis on the Performance of a Radiant Cooling Panel with Serpentine-Based Design," Energies, MDPI, vol. 14(16), pages 1-20, August.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:16:p:4744-:d:608483
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    References listed on IDEAS

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    1. Grinham, Jonathan & Craig, Salmaan & Ingber, Donald E. & Bechthold, Martin, 2020. "Origami microfluidics for radiant cooling with small temperature differences in buildings," Applied Energy, Elsevier, vol. 277(C).
    2. Xie, Dong & Wang, Yun & Wang, Hanqing & Mo, Shunquan & Liao, Maili, 2016. "Numerical analysis of temperature non-uniformity and cooling capacity for capillary ceiling radiant cooling panel," Renewable Energy, Elsevier, vol. 87(P3), pages 1154-1161.
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    Cited by:

    1. Marco Bizzarri & Paolo Conti & Leon R. Glicksman & Eva Schito & Daniele Testi, 2023. "Radiant Floor Cooling Systems: A Critical Review of Modeling Methods," Energies, MDPI, vol. 16(17), pages 1-28, August.
    2. Karl-Villem Võsa & Andrea Ferrantelli & Jarek Kurnitski, 2022. "Cooling Thermal Comfort and Efficiency Parameters of Ceiling Panels, Underfloor Cooling, Fan-Assisted Radiators, and Fan Coil," Energies, MDPI, vol. 15(11), pages 1-19, June.
    3. Minzhi Ye & Ahmed A. Serageldin & Katsunori Nagano, 2023. "Numerical and Parametric Study on Open-Type Ceiling Radiant Cooling Panel with Curved and Segmented Structure," Energies, MDPI, vol. 16(6), pages 1-20, March.

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