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Using power ultrasound for the regeneration of dehumidizers in desiccant air-conditioning systems: A review of prospective studies and unexplored issues

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  • Yao, Ye

Abstract

Regeneration of dehumidizers is the most important stage in the working cycle of desiccant system. The lower regeneration temperature will be favorable for the energy efficiency of the whole system. Ultrasonic technology may be a promising method of dehydration applied to the regeneration of desiccant. As a non-heating method, the power ultrasonic may help lower the regeneration temperature and bring about energy savings. In the present paper, the mechanism of ultrasonic regeneration is set forth based on the ultrasonic theory as well as the mass transfer model in solid-gas and liquid-gas system. The recent studies related to ultrasonic dehydration are extensively reviewed, which is of significant reference to the study of desiccant regeneration assisted by power ultrasound. In addition, this work gives the basic ideas of ultrasonic dehydrator for solid/liquid-desiccant regeneration, which will promote the development of relevant equipments. Finally, some unexplored issues on this topic are addressed, including insight into the effects of ultrasonic on the regeneration, drying kinetics model for ultrasonic regeneration and the challenges possibly faced for the ultrasonic transducer development.

Suggested Citation

  • Yao, Ye, 2010. "Using power ultrasound for the regeneration of dehumidizers in desiccant air-conditioning systems: A review of prospective studies and unexplored issues," Renewable and Sustainable Energy Reviews, Elsevier, vol. 14(7), pages 1860-1873, September.
    • Handle: RePEc:eee:rensus:v:14:y:2010:i:7:p:1860-1873
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    References listed on IDEAS

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    1. Zhang, L.Z., 2006. "Energy performance of independent air dehumidification systems with energy recovery measures," Energy, Elsevier, vol. 31(8), pages 1228-1242.
    2. Techajunta, S & Chirarattananon, S & Exell, R.H.B, 1999. "Experiments in a solar simulator on solid desiccant regeneration and air dehumidification for air conditioning in a tropical humid climate," Renewable Energy, Elsevier, vol. 17(4), pages 549-568.
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    1. Misha, S. & Mat, S. & Ruslan, M.H. & Sopian, K., 2012. "Review of solid/liquid desiccant in the drying applications and its regeneration methods," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(7), pages 4686-4707.
    2. Luo, Jielin & Yang, Hongxing, 2022. "A state-of-the-art review on the liquid properties regarding energy and environmental performance in liquid desiccant air-conditioning systems," Applied Energy, Elsevier, vol. 325(C).
    3. 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.
    4. Abdel-Salam, Ahmed H. & Simonson, Carey J., 2016. "State-of-the-art in liquid desiccant air conditioning equipment and systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 58(C), pages 1152-1183.
    5. 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.
    6. Wen, Tao & Lu, Lin, 2019. "A review of correlations and enhancement approaches for heat and mass transfer in liquid desiccant dehumidification system," Applied Energy, Elsevier, vol. 239(C), pages 757-784.
    7. 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).
    8. Ranjbaran, M. & Zare, D., 2013. "Simulation of energetic- and exergetic performance of microwave-assisted fluidized bed drying of soybeans," Energy, Elsevier, vol. 59(C), pages 484-493.
    9. Shukla, D.L. & Modi, K.V., 2022. "Influence of distinct input parameters on performance indices of dehumidifier, regenerator and on liquid desiccant-operated evaporative cooling system – A critical review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 168(C).

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