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Experimental investigation on performance improvement of electro-osmotic regeneration for solid desiccant

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  • Qi, Ronghui
  • Tian, Changqing
  • Shao, Shuangquan
  • Tang, Mingsheng
  • Lu, Lin

Abstract

Electro-osmotic regeneration for the solid desiccant has been proved to have many merits such as regeneration without the heat source; energy-saving and simple structure. However; the previous work has revealed that its performance is seriously limited by the severe Joule heating effect and electrode corrosion; which demands further improvement to meet the practical requirement. In this paper; four possible improvement methods are investigated experimentally; including changing the material of anode; changing layout of cathode; applying the interrupted power and optimizing the electrical field strength. Through detailed experiments and analysis; we found that applying the platinum-plated titanium mesh as anode could improve the working lifetime from 6 h to over 120 h and effectively reduce Joule heating effect simultaneously; laying a piece of filter cloth under the cathode could enhance the EO regeneration rate up to 0.0021 g s-1; the application of interrupted power could increase the regeneration rate up to 1.5 times; the optimal on-off-time was found at 30 s:1.3 s with 17 V cm-1 electric field strength and 30 s:0.8 s with 11 V cm-1; and the most suitable value of electric field strength was observed as ranging from 8.5 to 13 V cm-1 in our EO regeneration system.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:appene:v:88:y:2011:i:8:p:2816-2823
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    References listed on IDEAS

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    1. Xiao, Fu & Ge, Gaoming & Niu, Xiaofeng, 2011. "Control performance of a dedicated outdoor air system adopting liquid desiccant dehumidification," Applied Energy, Elsevier, vol. 88(1), pages 143-149, January.
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    5. 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.
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    Cited by:

    1. 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.
    2. Qi, Ronghui & Li, Dujuan & Zhang, Li-Zhi, 2017. "Performance investigation on polymeric electrolyte membrane-based electrochemical air dehumidification system," Applied Energy, Elsevier, vol. 208(C), pages 1174-1183.
    3. 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.
    4. Bhattacharya, Madhuchhanda & Basak, Tanmay, 2013. "A theoretical study on the use of microwaves in reducing energy consumption for an endothermic reaction: Role of metal coated bounding surface," Energy, Elsevier, vol. 55(C), pages 278-294.
    5. 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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