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Experimental investigation on possibility of electro-osmotic regeneration for solid desiccant

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  • Qi, Ronghui
  • Tian, Changqing
  • Shao, Shuangquan

Abstract

This paper aims to investigate the possibility and performance of a novel electro-osmotic regeneration method for the solid desiccant system, which could adsorb water from the moist air and be regenerated by the electro-osmotic force at the same time, by detailed experimental validation. The zeolite powder with both electro-osmotic and adsorptive characteristics was selected to make the solid desiccant. The quantity of the removed water was measured in the condition with and without an applied electric field to validate the possibility of the electro-osmotic regeneration. The test data show that there was an obvious electro-osmotic regeneration effect in the experiments. The whole electro-osmosis process was divided into three phases because of the Joule heating effect and electrode corrosion, which limited the performance of the experimental system. In particular, a filter cloth under the cathode made a superior electro-osmotic regeneration effect than without the cloth. The experimental results illustrate that the system has the potential of energy-saving and low regeneration temperature. So the electro-osmotic regeneration method is a potential regeneration method for the solid desiccant system.

Suggested Citation

  • Qi, Ronghui & Tian, Changqing & Shao, Shuangquan, 2010. "Experimental investigation on possibility of electro-osmotic regeneration for solid desiccant," Applied Energy, Elsevier, vol. 87(7), pages 2266-2272, July.
    • Handle: RePEc:eee:appene:v:87:y:2010:i:7:p:2266-2272
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    References listed on IDEAS

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    1. Zhang, Guiying & Tian, Changqing & Shao, Shuangquan, 2014. "Experimental investigation on adsorption and electro-osmosis regeneration of macroporous silica gel desiccant," Applied Energy, Elsevier, vol. 136(C), pages 1010-1017.
    2. 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.
    3. Yao, Ye & Yang, Kun & Liu, Shiqing, 2014. "Study on the performance of silica gel dehumidification system with ultrasonic-assisted regeneration," Energy, Elsevier, vol. 66(C), pages 799-809.
    4. Shamim, Jubair A. & Hsu, Wei-Lun & Paul, Soumyadeep & Yu, Lili & Daiguji, Hirofumi, 2021. "A review of solid desiccant dehumidifiers: Current status and near-term development goals in the context of net zero energy buildings," Renewable and Sustainable Energy Reviews, Elsevier, vol. 137(C).
    5. Yeboah, S.K. & Darkwa, J., 2016. "A critical review of thermal enhancement of packed beds for water vapour adsorption," Renewable and Sustainable Energy Reviews, Elsevier, vol. 58(C), pages 1500-1520.
    6. Qi, Ronghui & Tian, Changqing & Shao, Shuangquan & Tang, Mingsheng & Lu, Lin, 2011. "Experimental investigation on performance improvement of electro-osmotic regeneration for solid desiccant," Applied Energy, Elsevier, vol. 88(8), pages 2816-2823, August.
    7. Liu, Hongdou & Yang, Hongquan & Qi, Ronghui, 2020. "A review of electrically driven dehumidification technology for air-conditioning systems," Applied Energy, Elsevier, vol. 279(C).

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