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Modeling and simulation of solar collector/regenerator for liquid desiccant cooling systems

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  • Peng, Donggen
  • Zhang, Xiaosong

Abstract

Solar liquid collector/regenerator combines solar photothermic transformation and liquid regeneration together for solar energy-driven liquid desiccant cooling systems. A group of dimensionless heat and mass transfer equations describing the heat and mass transfer process in the solar C/R(Collector/Regenerator) were obtained by introducing total temperature difference (ΔT0) and dimensionless heat loss coefficient (h¯z). The increment of solution concentration ΔC was increased 2.9–3.5%/°C and 5.3%/°C for increasing unit inlet temperature of air stream and solution respectively and increased about 6.2%/(g/kg) and 0.9%/(g/kg) for decreasing unit inlet humidity ratio of air and solution concentration. Besides, the increasing number of heat transfer units (NTU), air-to-salt mass flow rate ratio (ASMR) and total temperature difference (ΔT0) can increase the performance of solution regeneration significantly. Compared to parallel flow regeneration, the performance of counterflow regeneration was increased about 10%.

Suggested Citation

  • Peng, Donggen & Zhang, Xiaosong, 2011. "Modeling and simulation of solar collector/regenerator for liquid desiccant cooling systems," Energy, Elsevier, vol. 36(5), pages 2543-2550.
    • Handle: RePEc:eee:energy:v:36:y:2011:i:5:p:2543-2550
    DOI: 10.1016/j.energy.2011.01.048
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    References listed on IDEAS

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    Cited by:

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    3. Elsarrag, Esam & Igobo, Opubo N. & Alhorr, Yousef & Davies, Philip A., 2016. "Solar pond powered liquid desiccant evaporative cooling," Renewable and Sustainable Energy Reviews, Elsevier, vol. 58(C), pages 124-140.
    4. Peng, Donggen & Luo, Danting & Cheng, Xiaosong, 2018. "Modeling and performance comparisons of the grading and single solar collector/ regenerator systems with heat recovery," Energy, Elsevier, vol. 144(C), pages 736-749.
    5. Enteria, Napoleon & Yoshino, Hiroshi & Mochida, Akashi, 2013. "Review of the advances in open-cycle absorption air-conditioning systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 28(C), pages 265-289.
    6. 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).
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    8. Gupta, A. & Anand, Y. & Tyagi, S.K. & Anand, S., 2016. "Economic and thermodynamic study of different cooling options: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 62(C), pages 164-194.
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    10. Yin, Yonggao & Qian, Junfei & Zhang, Xiaosong, 2014. "Recent advancements in liquid desiccant dehumidification technology," Renewable and Sustainable Energy Reviews, Elsevier, vol. 31(C), pages 38-52.
    11. Peng, Donggen & Zhang, Xiaosong, 2016. "Experimental investigation on regeneration performance, heat and mass transfer characteristics in a forced solar collector/regenerator," Energy, Elsevier, vol. 101(C), pages 296-308.
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    13. 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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