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An experimental investigation on the integration of two-stage dehumidification and regenerative evaporative cooling

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  • La, D.
  • Dai, Y.J.
  • Li, Y.
  • Tang, Z.Y.
  • Ge, T.S.
  • Wang, R.Z.

Abstract

A novel chiller with open-cycle rotary desiccant cooling has been investigated experimentally. The technologies of two-stage dehumidification and regenerative evaporative cooling have been integrated together in this chiller. The objective of this study is to extend the ability for handling sensible heat of the rotary desiccant cooling system. Based on the experimental results, it is found that the novel chiller is a good choice for space cooling using low-grade heat source. The temperature of the supply chilled water from this unit is around 15–20°C. The thermal coefficient of performance is about 0.3–0.6 in terms of the chilled water production. Furthermore, the rotary desiccant cooling system, which produces both dry air and chilled water, is proved to be superior to the conventional rotary desiccant cooling system in handling the sensible heat. Especially, under humid and high humid conditions, the effective cooling capacity of the novel system is still at a favorable level. The specific thermal coefficient of performance of the novel rotary desiccant cooling system is around 0.8–0.9 considering the production of both chilled water and dry air.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:appene:v:102:y:2013:i:c:p:1218-1228
    DOI: 10.1016/j.apenergy.2012.06.053
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    References listed on IDEAS

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    6. Angrisani, Giovanni & Capozzoli, Alfonso & Minichiello, Francesco & Roselli, Carlo & Sasso, Maurizio, 2011. "Desiccant wheel regenerated by thermal energy from a microcogenerator: Experimental assessment of the performances," Applied Energy, Elsevier, vol. 88(4), pages 1354-1365, April.
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    Cited by:

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    2. Liang, Jyun-De & Hsu, Chien-Yeh & Hung, Tai-Chih & Chiang, Yuan-Ching & Chen, Sih-Li, 2018. "Geometrical parameters analysis of improved circulating inclined fluidized beds for general HVAC duct systems," Applied Energy, Elsevier, vol. 230(C), pages 784-793.
    3. Li, Xian & Liu, Shuai & Tan, Kok Kiong & Wang, Qing-Guo & Cai, Wen-Jian & Xie, Lihua, 2016. "Dynamic modeling of a liquid desiccant dehumidifier," Applied Energy, Elsevier, vol. 180(C), pages 435-445.
    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. Tu, Rang & Liu, Xiao-Hua & Jiang, Yi, 2014. "Performance analysis of a two-stage desiccant cooling system," Applied Energy, Elsevier, vol. 113(C), pages 1562-1574.
    6. Chiang, Yuan-Ching & Chen, Chih-Hao & Chiang, Yi-Chin & Chen, Sih-Li, 2016. "Circulating inclined fluidized beds with application for desiccant dehumidification systems," Applied Energy, Elsevier, vol. 175(C), pages 199-211.
    7. Tu, Rang & Liu, Xiao-Hua & Jiang, Yi, 2015. "Irreversible processes and performance improvement of desiccant wheel dehumidification and cooling systems using exergy," Applied Energy, Elsevier, vol. 145(C), pages 331-344.
    8. Giovanni Angrisani & Carlo Roselli & Maurizio Sasso & Francesco Tariello & Giuseppe Peter Vanoli, 2016. "Performance Assessment of a Solar-Assisted Desiccant-Based Air Handling Unit Considering Different Scenarios," Energies, MDPI, vol. 9(9), pages 1-24, September.
    9. Cui, X. & Chua, K.J. & Yang, W.M., 2014. "Numerical simulation of a novel energy-efficient dew-point evaporative air cooler," Applied Energy, Elsevier, vol. 136(C), pages 979-988.
    10. Chen, Yi & Yan, Huaxia & Yang, Hongxing, 2018. "Comparative study of on-off control and novel high-low control of regenerative indirect evaporative cooler (RIEC)," Applied Energy, Elsevier, vol. 225(C), pages 233-243.
    11. Fahid Riaz & Muhammad Abdul Qyyum & Awais Bokhari & Jiří Jaromír Klemeš & Muhammad Usman & Muhammad Asim & Muhammad Rizwan Awan & Muhammad Imran & Moonyong Lee, 2021. "Design and Energy Analysis of a Solar Desiccant Evaporative Cooling System with Built-In Daily Energy Storage," Energies, MDPI, vol. 14(9), pages 1-17, April.
    12. Lin, Jie & Huang, Si-Min & Wang, Ruzhu & Jon Chua, Kian, 2019. "On the in-depth scaling and dimensional analysis of a cross-flow membrane liquid desiccant dehumidifier," Applied Energy, Elsevier, vol. 250(C), pages 786-800.
    13. Zhang, Ning & Yin, Shao-You & Zhang, Li-Zhi, 2016. "Performance study of a heat pump driven and hollow fiber membrane-based two-stage liquid desiccant air dehumidification system," Applied Energy, Elsevier, vol. 179(C), pages 727-737.
    14. Lin, Jie & Bui, Duc Thuan & Wang, Ruzhu & Chua, Kian Jon, 2018. "On the fundamental heat and mass transfer analysis of the counter-flow dew point evaporative cooler," Applied Energy, Elsevier, vol. 217(C), pages 126-142.

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