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A proposed compressed air drying method using pressurized liquid desiccant and experimental verification

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  • Yin, Yonggao
  • Zheng, Baojun
  • Yang, Can
  • Zhang, Xiaosong

Abstract

A novel compressed air drying method using pressurized liquid desiccant is proposed in this paper. The compressed air drying system is consisted of a compressed air module, a pressurized liquid desiccant dehumidifier, a liquid desiccant regenerator working in an atmospheric pressure, and other auxiliary components. An experimental apparatus of the pressurized liquid desiccant dehumidifier associated with a compressed air module is established to verify the proposed air drying method experimentally. The results show that, under the pressure of 0.5MPa, the moisture content in the outlet air can reach 0.9g/kg. The moisture content of the outlet air reaches 1.4g/kg under the pressure of 0.3MPa, and the power consumption of the drying system is 6.17kJ/g, which is 0.69kJ/g and 10.1% lower than the conventional compressed air cooling drying system. The dehumidification efficiency is around 0.90, indicating the sufficiently mass transfer between compressed air and solution in pressurized dehumidifier. Besides, the proposed compressed air drying system can use the low-grade heat from the air compressor to regenerate the diluted desiccantsolution. The novel air drying method is verified to offer very dry air for industrial application, and shows significant energy saving potential compared with the conventional compressed air cooling drying system.

Suggested Citation

  • Yin, Yonggao & Zheng, Baojun & Yang, Can & Zhang, Xiaosong, 2015. "A proposed compressed air drying method using pressurized liquid desiccant and experimental verification," Applied Energy, Elsevier, vol. 141(C), pages 80-89.
    • Handle: RePEc:eee:appene:v:141:y:2015:i:c:p:80-89
    DOI: 10.1016/j.apenergy.2014.12.015
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    Cited by:

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    2. Zhan, Changfeng & Yin, Yonggao & Guo, Xiaoshuang & Jin, Xing & Zhang, Xiaosong, 2018. "Investigation on drying performance and alternative analysis of different liquid desiccants in compressed air drying system," Energy, Elsevier, vol. 165(PB), pages 1-9.
    3. Hernan Hernandez-Herrera & Jorge I. Silva-Ortega & Vicente Leonel Mart nez Diaz & Zaid Garc a Sanchez & Gilberto Gonz lez Garc a & Sandra M. Escorcia & Habid E. Zarate, 2020. "Energy Savings Measures in Compressed Air Systems," International Journal of Energy Economics and Policy, Econjournals, vol. 10(3), pages 414-422.
    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. Zhan, Changfeng & Yin, Yonggao & Jin, Xing & Zhang, Xiaosong, 2018. "Experimental and simulated study on a novel compressed air drying system using a liquid desiccant cycle," Energy, Elsevier, vol. 162(C), pages 60-71.
    6. 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.
    7. Benedetti, Miriam & Bonfa', Francesca & Bertini, Ilaria & Introna, Vito & Ubertini, Stefano, 2018. "Explorative study on Compressed Air Systems’ energy efficiency in production and use: First steps towards the creation of a benchmarking system for large and energy-intensive industrial firms," Applied Energy, Elsevier, vol. 227(C), pages 436-448.
    8. 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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