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Investigation on the Regeneration and Corrosion Characteristics of an Anodized Aluminum Plate Regenerator

Author

Listed:
  • Tao Wen

    (Renewable Energy Research Group, Department of Building Services Engineering, The Hong Kong Polytechnic University, Hong Kong, China)

  • Lin Lu

    (Renewable Energy Research Group, Department of Building Services Engineering, The Hong Kong Polytechnic University, Hong Kong, China)

  • Hongxing Yang

    (Renewable Energy Research Group, Department of Building Services Engineering, The Hong Kong Polytechnic University, Hong Kong, China)

  • Yimo Luo

    (Faculty of Science and Technology, Technological and Higher Education Institute of Hong Kong, Hong Kong, China)

Abstract

The traditional vapor compression cooling system (VCS) has been criticized for its heavy reliance on electricity consumption and limited control ability of humidity. Compared with the VCS, the liquid desiccant cooling system (LDCS) is more efficient by handling the sensible and latent load separately. The present study investigated the regeneration and corrosion characteristics of an anodized aluminum plate regenerator for the first time. Comparative tests were conducted to present the regeneration and corrosion characteristics of the normal and anodized regenerator. The influence of internal heating on the regeneration performance was also identified. The results showed that the corrosion rate was reduced from 0.0005218 mm/year for normal aluminum to 0.000011 m/year for anodized one under the same operating conditions. However, pitting corrosion was observed at operating conditions with high solution temperature, as the anodized layer of anodized aluminum was damaged due to the high temperature. Compared with the normal aluminum regenerator, the anodized one had an average enhancement of 24% and 23.7% in terms of regeneration rate and effectiveness, respectively. It was attributed to the increment of surface energy from 26.4 mN/m for normal aluminum to 47.6 mN/m for anodized plate. Besides, it was found that, compared with adiabatic one, the internally-heated regenerator improved the regeneration rate by 6.0%~38% and the regeneration effectiveness by 6.3%~32% depending on the operating conditions. The advantage of present study is that it can guide the design of anodized aluminum regenerator for LDCS.

Suggested Citation

  • Tao Wen & Lin Lu & Hongxing Yang & Yimo Luo, 2018. "Investigation on the Regeneration and Corrosion Characteristics of an Anodized Aluminum Plate Regenerator," Energies, MDPI, vol. 11(5), pages 1-15, May.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:5:p:1209-:d:145443
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    References listed on IDEAS

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    1. Liu, X.H. & Jiang, Y. & Yi, X.Q., 2009. "Effect of regeneration mode on the performance of liquid desiccant packed bed regenerator," Renewable Energy, Elsevier, vol. 34(1), pages 209-216.
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    5. Wen, Tao & Lu, Lin & Dong, Chuanshuai & Luo, Yimo, 2018. "Development and experimental study of a novel plate dehumidifier made of anodized aluminum," Energy, Elsevier, vol. 144(C), pages 169-177.
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    Cited by:

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    3. Tao, Wen & Yimo, Luo & Lin, Lu, 2019. "A novel 3D simulation model for investigating liquid desiccant dehumidification performance based on CFD technology," Applied Energy, Elsevier, vol. 240(C), pages 486-498.

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