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The regeneration of silica gel desiccant by air from a solar heater with a compound parabolic concentrator

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  • Pramuang, Surajitr
  • Exell, R.H.B.

Abstract

The regeneration of silica gel desiccant by a solar air heater for use in an air-conditioning system has been investigated. The hot air is produced by a compound parabolic concentrator collector (CPC), which has aperture and receiver areas 1.44 and 0.48m2, respectively. The regeneration temperature can be started at 40oC. The regeneration rate and the regeneration efficiency were greatly affected by the solar radiation, but depended only slightly on the different initial moisture contents of silica gel and the number of silica gel beds. The regeneration of silica gel provided by the CPC collector is suitable for a tropical climate where the diffuse solar radiation is high all the year round.

Suggested Citation

  • Pramuang, Surajitr & Exell, R.H.B., 2007. "The regeneration of silica gel desiccant by air from a solar heater with a compound parabolic concentrator," Renewable Energy, Elsevier, vol. 32(1), pages 173-182.
    • Handle: RePEc:eee:renene:v:32:y:2007:i:1:p:173-182
    DOI: 10.1016/j.renene.2006.02.009
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    References listed on IDEAS

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    1. Singh, Sukhmeet & Singh, Parm Pal, 1998. "Regeneration of silica gel in multi-shelf regenerator," Renewable Energy, Elsevier, vol. 13(1), pages 105-119.
    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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    Cited by:

    1. Sultan, Muhammad & El-Sharkawy, Ibrahim I. & Miyazaki, Takahiko & Saha, Bidyut Baran & Koyama, Shigeru, 2015. "An overview of solid desiccant dehumidification and air conditioning systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 46(C), pages 16-29.
    2. 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.
    3. Zhang, Weijiang & Yao, Ye & He, Beixing & Wang, Rongshun, 2011. "The energy-saving characteristic of silica gel regeneration with high-intensity ultrasound," Applied Energy, Elsevier, vol. 88(6), pages 2146-2156, June.
    4. Wansheng Yang & Wenhui Wang & Zezhi Ding & Zhangyuan Wang & Xudong Zhao & Song He, 2017. "Performance Study of a Novel Solar Solid Dehumidification/Regeneration Bed for Use in Buildings Air Conditioning Systems," Energies, MDPI, vol. 10(9), pages 1-14, September.
    5. 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.
    6. Madadi Avargani, Vahid & Zendehboudi, Sohrab & Zamani, Mohammad Amin, 2023. "Performance evaluation of various nano heat transfer fluids in charging/discharging processes of an indirect solar air heating system," Energy, Elsevier, vol. 274(C).
    7. La, D. & Dai, Y.J. & Li, Y. & Wang, R.Z. & Ge, T.S., 2010. "Technical development of rotary desiccant dehumidification and air conditioning: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 14(1), pages 130-147, January.
    8. Amit Kumar & Avadhesh Yadav, 2017. "Experimental investigation of solar-powered desiccant cooling system by using composite desiccant “CaCl2/jute”," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 19(4), pages 1279-1292, August.
    9. Husham Abdulmalek, Shaymaa & Khalaji Assadi, Morteza & Al-Kayiem, Hussain H. & Gitan, Ali Ahmed, 2018. "A comparative analysis on the uniformity enhancement methods of solar thermal drying," Energy, Elsevier, vol. 148(C), pages 1103-1115.
    10. 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.
    11. 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.
    12. Oztop, Hakan F. & Bayrak, Fatih & Hepbasli, Arif, 2013. "Energetic and exergetic aspects of solar air heating (solar collector) systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 21(C), pages 59-83.

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