Experimental investigation of the heat and mass transfer between air and liquid desiccant in a cross-flow regenerator
Experimental investigation of the heat and mass transfer between air and liquid desiccant in a cross-flow regenerator
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DOI：
10.1016/j.renene.2011.06.006
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发表时间：
2007-08
期刊：
影响因子：
8.7
通讯作者：
X. Liu;Y. Jiang;Xiaomin Chang;X. Yi
中科院分区：
文献类型：
--
作者：
X. Liu;Y. Jiang;Xiaomin Chang;X. Yi
除湿器是溶液除湿空调系统的核心部件，其效率的高低直接影响到整个系统的性能。本文建立了一种以LiCl溶液和Celdek规整填料为主体的错流除湿器。采用焓效率和湿效率来描述除湿器的传热传质性能。实验研究了除湿剂和空气入口参数对除湿器性能的影响，并对不同空气出口区域的除湿效率进行了比较，以及填料结构尺寸对除湿器性能的影响。结果表明，由实验回归得到的焓效率和湿效率可以方便地得到空气和溶液的出口参数值。效率具有明显的区域特征。通过同时增加除湿器的厚度、宽度或高度，可以在不增加压力损失的情况下获得更好的除湿性能。
Dehumidifier is the core component in a liquid desiccant air-conditioning system, whose efficiency directly affects the whole performance. In this study a cross-flow dehumidifier was established in which LiCl solution and Celdek structured packing were used. Enthalpy efficiency and moisture efficiency were adopted to describe the heat and mass transfer performance of the dehumidifier. Influence of desiccant and air inlet parameters on the dehumidifier performance was experimentally investigated, and efficiency comparison in different air outlet regions was also carried out, as well as influence of packing structure size on dehumidifier performance. The results show that the outlet parameter values of air and solution can be easily gained with enthalpy efficiency and moisture efficiency which was obtained from experimental regression. Efficiency has obvious regional characteristics. By increasing the thickness, width or height simultaneously, better performance of Dehumidifier can be achieved without increasing the pressure loss.