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Performance analysis of a new kind of heat pump-driven outdoor air processor using solid desiccant

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  • Tu, Rang
  • Liu, Xiao-Hua
  • Jiang, Yi

Abstract

A new type of outdoor air dehumidification processor using solid desiccant is proposed, in which a heat pump and square desiccant plates are combined. Each desiccant plate consists of an air channel with a honeycomb structure that is coated with desiccant material. The square desiccant plates change positions between the processed air duct for dehumidification and the regenerated air duct for regeneration. The cooling capacity of the heat pump is utilized to cool the processed air, and the exhaust heat of the heat pump is used to provide regenerative heat to the desiccant. Several stages can be combined together to gain higher efficiency. The proposed desiccant dehumidifier can achieve a low humidity ratio of the supplied air and provides low-temperature regeneration. A mathematical model is established to predict the performance of this desiccant processor, and the model shows good agreement with the experimental results. The factors that influence the performance of the processor are then analyzed in order to maximize performance. The simulation results show that the proposed desiccant processor provides regeneration at a low temperature (40–50 °C), and the COP can surpass 4.0 at different processed air inlet states.

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  • Tu, Rang & Liu, Xiao-Hua & Jiang, Yi, 2013. "Performance analysis of a new kind of heat pump-driven outdoor air processor using solid desiccant," Renewable Energy, Elsevier, vol. 57(C), pages 101-110.
    • Handle: RePEc:eee:renene:v:57:y:2013:i:c:p:101-110
    DOI: 10.1016/j.renene.2013.01.038
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    References listed on IDEAS

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    Cited by:

    1. Chen, Chih-Hao & Hsu, Chien-Yeh & Chen, Chih-Chieh & Chiang, Yuan-Ching & Chen, Sih-Li, 2016. "Silica gel/polymer composite desiccant wheel combined with heat pump for air-conditioning systems," Energy, Elsevier, vol. 94(C), pages 87-99.
    2. Tu, Rang & Liu, Xiao-Hua & Jiang, Yi, 2014. "Performance analysis of a two-stage desiccant cooling system," Applied Energy, Elsevier, vol. 113(C), pages 1562-1574.
    3. Rambhad, Kishor S. & Walke, Pramod V. & Tidke, D.J., 2016. "Solid desiccant dehumidification and regeneration methods—A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 59(C), pages 73-83.
    4. Tu, Rang & Liu, Xiao-Hua & Jiang, Yi & Ma, Fei, 2015. "Influence of the number of stages on the heat source temperature of desiccant wheel dehumidification systems using exergy analysis," Energy, Elsevier, vol. 85(C), pages 379-391.
    5. 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.

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