Analytical solutions of coupled heat and mass transfer processes in liquid desiccant air dehumidifier/regenerator
Analytical solutions of coupled heat and mass transfer processes in liquid desiccant air dehumidifier/regenerator
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DOI：
10.1016/j.enconman.2006.12.009
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发表时间：
2007-07
影响因子：
10.4
通讯作者：
Xiaohua Liu;Yi Jiang;J. Xia;Xiaomin Chang
中科院分区：
文献类型：
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作者：
Xiaohua Liu;Yi Jiang;J. Xia;Xiaomin Chang
除湿器和再生器是液体除湿空调系统的关键部件。许多研究人员开发了除湿器或再生器中传热传质耦合过程的数学模型，并且大多数模型都是通过数值求解的。与数值解相比，解析解在分析影响传热传质性能的参数方面更具优势。本文提出了基于现有传热传质模型的合理假设下并流、逆流和错流除湿器/再生器内的空气和干燥剂参数的解析解。除湿器/再生器内空气和干燥剂参数的解析解与相应的数值结果吻合良好，而焓和湿度效率的解析解与实验结果吻合良好。这里开发的方法可用于除湿器或再生器的优化设计。
The dehumidifier and regenerator are key components in liquid desiccant air conditioning systems. Many researchers have developed mathematical models of the coupled heat and mass transfer processes in the dehumidifier or regenerator, and most of the models were solved numerically. Compared with numerical solutions, analytical solutions have more advantages in analyzing the parameters that affect the heat and mass transfer performance. This paper presents analytical solutions of the air and desiccant parameters inside the parallel flow, counter flow and cross flow dehumidifier/regenerator under some reasonable assumptions based on the available heat and mass transfer models. The analytical solutions of the air and desiccant parameters within the dehumidifier/regenerator show good agreement with the corresponding numerical results, and the analytical solutions of the enthalpy and moisture efficiencies agree well with experimental findings. The method developed here can be used in the optimal design of the dehumidifier or regenerator.