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Effect of Different Plenum-Chamber Coefficients on the Frosting of Air-Cooler

Author

Listed:
  • Bin Liu

    (Tianjin Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, Tianjin 300134, China)

  • Shengqiang Shi

    (Tianjin Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, Tianjin 300134, China)

  • Yongshan Liu

    (Tianjin Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, Tianjin 300134, China)

  • Rachid Bennacer

    (CNRS (Centre National de la Recherche Scientifique), LMT (Laboratoire de Mécanique et Technologie—Labo. Méca. Tech.), Université Paris-Saclay, ENS (Ecole National Supérieure) Paris-Saclay, 91190 Gif-sur-Yvette, France)

  • Aiqiang Chen

    (Tianjin Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, Tianjin 300134, China)

  • Panagiotis E. Theodorakis

    (Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland)

Abstract

The performance of the air-cooler in refrigeration systems plays a key role in their energy efficiency. Here, the plenum-chamber coefficient was defined to investigate a possible way of enhancing the refrigeration coefficient that reflects the efficiency of the system. To investigate the influence of the plenum-chamber coefficient on the frosting and the cooling system of the air-cooler, three plenum-chamber coefficients (0.74, 0.97, 1.2) were studied under two different relative humidities. The temperature decreasing curve of the environmental chamber, the velocity distribution of the air-cooler, and the frost accumulation under and on the air-cooler were analyzed. We find that the homogeneity of the velocity distribution of the air-cooler and the frost accumulation increase with a growing plenum-chamber coefficient, while the frost accumulation on the fin will first increase and then decrease with the increase in the plenum-chamber coefficient. In general, frosting is more present when the plenum-chamber coefficient is 0.97.

Suggested Citation

  • Bin Liu & Shengqiang Shi & Yongshan Liu & Rachid Bennacer & Aiqiang Chen & Panagiotis E. Theodorakis, 2022. "Effect of Different Plenum-Chamber Coefficients on the Frosting of Air-Cooler," Energies, MDPI, vol. 15(2), pages 1-13, January.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:2:p:422-:d:719486
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    References listed on IDEAS

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    1. Rafati Nasr, Mohammad & Fauchoux, Melanie & Besant, Robert W. & Simonson, Carey J., 2014. "A review of frosting in air-to-air energy exchangers," Renewable and Sustainable Energy Reviews, Elsevier, vol. 30(C), pages 538-554.
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