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A new method for preventing HP from frosting

Author

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  • Wang, S.W.
  • Liu, Z.Y.

Abstract

The utility of HP (heat pump) in winter is limited by the problem of frost. The authors discuss a method for preventing HP from frosting, i.e. air is dehumidified by solid adsorbent before entering the evaporator. Not only does air humidity reduce, but also air temperature rises for absorbing adsorbing heat. As a result, the frost problem is resolved, and performance of the HP is improved in winter. The adsorbent bed can be fixed behind the outdoor unit of HP. It is made of zeolite plates, with an active carbon coat. Both sides of each zeolite plate are coated with a very thin layer of a mixture of active carbon and sodium silicate. The active carbon coat (black adsorbent material) can absorb sunlight as a supplementary source of energy for electrical heater for desorption, thus saving electrical energy. Air pressure loss through the bed is so low that the HP fan need not be changed. Using a mathematical model simulation for the sorption process, the method is proven to be valid.

Suggested Citation

  • Wang, S.W. & Liu, Z.Y., 2005. "A new method for preventing HP from frosting," Renewable Energy, Elsevier, vol. 30(5), pages 753-761.
    • Handle: RePEc:eee:renene:v:30:y:2005:i:5:p:753-761
    DOI: 10.1016/j.renene.2003.07.001
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    Citations

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    Cited by:

    1. Sheng, Wei & Liu, Pengpeng & Dang, Chaobin & Liu, Guixin, 2017. "Review of restraint frost method on cold surface," Renewable and Sustainable Energy Reviews, Elsevier, vol. 79(C), pages 806-813.
    2. Liu, Di & Zhao, Fu-Yun & Tang, Guang-Fa, 2007. "Frosting of heat pump with heat recovery facility," Renewable Energy, Elsevier, vol. 32(7), pages 1228-1242.
    3. Badri, Deyae & Toublanc, Cyril & Rouaud, Olivier & Havet, Michel, 2021. "Review on frosting, defrosting and frost management techniques in industrial food freezers," Renewable and Sustainable Energy Reviews, Elsevier, vol. 151(C).
    4. Wang, Fenghao & Wang, Zhihua & Zheng, Yuxin & Lin, Zhang & Hao, Pengfei & Huan, Chao & Wang, Tian, 2015. "Performance investigation of a novel frost-free air-source heat pump water heater combined with energy storage and dehumidification," Applied Energy, Elsevier, vol. 139(C), pages 212-219.
    5. Wang, Feng & Liang, Caihua & Zhang, Xiaosong, 2018. "Research of anti-frosting technology in refrigeration and air conditioning fields: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 81(P1), pages 707-722.
    6. She, Xiaohui & Cong, Lin & Nie, Binjian & Leng, Guanghui & Peng, Hao & Chen, Yi & Zhang, Xiaosong & Wen, Tao & Yang, Hongxing & Luo, Yimo, 2018. "Energy-efficient and -economic technologies for air conditioning with vapor compression refrigeration: A comprehensive review," Applied Energy, Elsevier, vol. 232(C), pages 157-186.
    7. Amer, Mohammed & Wang, Chi-Chuan, 2017. "Review of defrosting methods," Renewable and Sustainable Energy Reviews, Elsevier, vol. 73(C), pages 53-74.
    8. Yi Zhang & Guanmin Zhang & Aiqun Zhang & Yinhan Jin & Ruirui Ru & Maocheng Tian, 2018. "Frosting Phenomenon and Frost-Free Technology of Outdoor Air Heat Exchanger for an Air-Source Heat Pump System in China: An Analysis and Review," Energies, MDPI, vol. 11(10), pages 1-36, October.

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