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Experimental performance investigation on a desiccant-assisted two-stage evaporative cooling system in hot and humid areas

Author

Listed:
  • Zhang, Yanling
  • Chen, Yi
  • Yang, Hongxing
  • Zhang, Hao
  • Leung, Chun Wah

Abstract

The escalating demand for energy-efficient and eco-friendly air conditioning systems in buildings has spurred the development of comfortable, efficient, and cost-effective air handling system configurations. Desiccant cooling has shown a higher coefficient of performance (COP) compared to traditional vapor compression refrigeration (MVCR) systems. However, current desiccant cooling facilities struggle to decouple and efficiently handle indoor heat and moisture loads. The complexity of these facilities has kept intricate cooling systems remaining theoretical, requiring simplification and experimental investigation. This paper presents an experimental study on a compact, two-stage evaporative cooling system assisted by a liquid desiccant. A key innovation of this system is the inclusion of a two-stage heat exchanger that adeptly manages the decoupling of indoor heat and moisture loads under challenging high-temperature and high-humidity conditions. Performance analysis was conducted experimentally under three hot and humid climatic conditions using an optimized operating parameter scheme. Starting from an initial condition of 36.22 °C and a humidity ratio of 0.028 kg/kg, the proposed system achieves COP values ranging from 11.3 to 18.4 without compromising indoor comfort or facility compactness. Under high heat and high humidity conditions, the optimized system extracts 20 % of the product air as the secondary air source. It can reach a minimum supply air temperature of 18.44 °C, achieved under optimized conditions of low wind speed (1.0 m/s), high desiccant concentration (35 %), and substantial desiccant flow (0.09 kg/s). Experimental studies of this new system provide the possibility of achieving high efficiency in air handling over a wide range of temperatures and humidity.

Suggested Citation

  • Zhang, Yanling & Chen, Yi & Yang, Hongxing & Zhang, Hao & Leung, Chun Wah, 2025. "Experimental performance investigation on a desiccant-assisted two-stage evaporative cooling system in hot and humid areas," Applied Energy, Elsevier, vol. 377(PD).
    • Handle: RePEc:eee:appene:v:377:y:2025:i:pd:s0306261924020877
    DOI: 10.1016/j.apenergy.2024.124704
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    References listed on IDEAS

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    1. Yanling Zhang & Hao Zhang & Hongxing Yang & Yi Chen & Chun Wah Leung, 2023. "Optimization of the Liquid Desiccant Cooling Systems in Hot and Humid Areas," Sustainability, MDPI, vol. 15(18), pages 1-20, September.
    2. Xuan, Y.M. & Xiao, F. & Niu, X.F. & Huang, X. & Wang, S.W., 2012. "Research and application of evaporative cooling in China: A review (I) – Research," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(5), pages 3535-3546.
    3. Gurubalan, A. & Maiya, M.P. & Geoghegan, Patrick J., 2019. "A comprehensive review of liquid desiccant air conditioning system," Applied Energy, Elsevier, vol. 254(C).
    4. Chen, Yi & Yang, Hongxing & Luo, Yimo, 2018. "Investigation on solar assisted liquid desiccant dehumidifier and evaporative cooling system for fresh air treatment," Energy, Elsevier, vol. 143(C), pages 114-127.
    5. Duan, Zhiyin & Zhan, Changhong & Zhang, Xingxing & Mustafa, Mahmud & Zhao, Xudong & Alimohammadisagvand, Behrang & Hasan, Ala, 2012. "Indirect evaporative cooling: Past, present and future potentials," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(9), pages 6823-6850.
    6. Kim, Min-Hwi & Park, Jun-Seok & Jeong, Jae-Weon, 2013. "Energy saving potential of liquid desiccant in evaporative-cooling-assisted 100% outdoor air system," Energy, Elsevier, vol. 59(C), pages 726-736.
    7. Zouaoui, Ahlem & Zili-Ghedira, Leila & Ben Nasrallah, Sassi, 2016. "Open solid desiccant cooling air systems: A review and comparative study," Renewable and Sustainable Energy Reviews, Elsevier, vol. 54(C), pages 889-917.
    8. Li, Wei & Yao, Ye, 2021. "Performance analysis of different flow types of internally-cooled membrane-based liquid desiccant dehumidifiers," Energy, Elsevier, vol. 228(C).
    9. Su, Wei & Lu, Zhifei & She, Xiaohui & Zhou, Junming & Wang, Feng & Sun, Bo & Zhang, Xiaosong, 2022. "Liquid desiccant regeneration for advanced air conditioning: A comprehensive review on desiccant materials, regenerators, systems and improvement technologies," Applied Energy, Elsevier, vol. 308(C).
    10. Tao, Wen & Yimo, Luo & Lin, Lu, 2019. "A novel 3D simulation model for investigating liquid desiccant dehumidification performance based on CFD technology," Applied Energy, Elsevier, vol. 240(C), pages 486-498.
    11. La, D. & Dai, Y.J. & Li, Y. & Tang, Z.Y. & Ge, T.S. & Wang, R.Z., 2013. "An experimental investigation on the integration of two-stage dehumidification and regenerative evaporative cooling," Applied Energy, Elsevier, vol. 102(C), pages 1218-1228.
    12. Cuce, Pinar Mert & Riffat, Saffa, 2016. "A state of the art review of evaporative cooling systems for building applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 54(C), pages 1240-1249.
    13. Shi, Wenchao & Yang, Hongxing & Ma, Xiaochen & Liu, Xiaohua, 2023. "Performance prediction and optimization of cross-flow indirect evaporative cooler by regression model based on response surface methodology," Energy, Elsevier, vol. 283(C).
    14. Zhang, Hongkuan & Ma, Hongting & Ma, Shuo, 2022. "Energy, exergy, economic and environmental analysis of an indirect evaporative cooling integrated with liquid dehumidification," Energy, Elsevier, vol. 253(C).
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