Selection of optimal mixed liquid desiccants and performance analysis of the liquid desiccant cooling system

Selection of optimal mixed liquid desiccants and performance analysis of the liquid desiccant cooling system
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最佳混合液体干燥剂的选择及液体干燥剂冷却系统的性能分析

DOI:
10.1016/j.applthermaleng.2015.09.037
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发表时间:
2016-02
影响因子:
6.4
通讯作者:
Xiaosong Zhang
Xiaosong Zhang
中科院分区:
工程技术2区
文献类型:
--
作者:
Xiao Zhao;Xiuwei Li;Xiaosong Zhang

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液体除湿冷却系统是一种节能环保的空调系统。液体除湿剂的热物性,特别是表面蒸汽压对除湿器的性能有很大的影响。混合型液体除湿剂具有除湿效率高、材料成本低、能耗低等优点。但对其热性能的分析比较困难。为了改善这一点,我们提出了一种基于NRTL方程的方法来预测混合液体干燥剂的蒸汽压。已分析了六种吸收剂溶液(LiBr/LiCl + CaCl 2/MgCl 2+水/甲醇),并且还研究了使用它们的系统。结果表明,混合溶液的除湿效率高于单一溶液。在夏季相同制冷性能的条件下,LiBr-CaCl 2-水系统的COP值高于其它系统。此外,LiCl-甲醇-水体系可能是一种潜在的节能吸收剂。研究结果对选择合适的液体干燥剂和工程设计具有指导意义。
Liquid desiccant cooling system is an energy-conservative and environment-friendly air-conditioning system. Its performance is strongly influenced by the thermal properties of liquid desiccant, especially the surface vapor pressure. Mixed liquid desiccant may have better dehumidification efficiency, lower material cost and lower energy consumption. But it is difficult to analyze its thermal properties. To improve on this, our paper proposes a method based on the NRTL equation to predict the vapor pressure of mixed liquid desiccants. Six absorbent solutions (LiBr/LiCl + CaCl2/MgCl2+ water/methanol) have been analyzed, and systems employing them have also been investigated. The results show that the dehumidification efficiency of mixed liquid desiccant was higher than that of a single solution. The LiBr–CaCl2–water system can obtain higher COP compared with other systems under the condition of the same dehumidification performance in summer. Moreover, the LiCl–methanol–water may be a potential absorbent for energy saving. The results are meaningful for the selection of suitable liquid desiccants and engineering design.
DOI: 10.1016/j.applthermaleng.2014.02.031
发表时间: 2014-05
影响因子: 6.4
作者:
A. Ramzy;Waleed M. Elawady;Hossam AbdelMeguid
通讯作者: A. Ramzy;Waleed M. Elawady;Hossam AbdelMeguid
液体除湿冷却系统干燥剂及除湿机选择进展
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DOI: --
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期刊: Fluid Machinery
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DOI: 10.1016/j.rser.2012.11.065
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DOI: 10.1002/aic.690280410
发表时间: 1982-01-01
期刊: AICHE JOURNAL
影响因子: 3.7
作者:
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