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.2006.07.002
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发表时间：
2007-08-01
期刊：
影响因子：
8.7
通讯作者：
Yi, X. Q.
中科院分区：
文献类型：
--
作者：
Liu, X. H.;Jiang, Y.;Yi, X. Q.
回热器是液体除湿空调系统的重要组成部分，其效率的高低直接影响到系统的性能。本文建立了一个叉流回热器性能试验台。再生器采用Celdek规整填料，液体除湿剂采用LiBr水溶液。采用除湿率和再生器效率来描述再生器的传质性能。实验研究了空气和除湿剂入口参数对回热器性能的影响，并将现有的横流回热器与文献中的逆流回热器进行了性能比较。对比结果表明，空气和除湿剂入口参数的影响与逆流式回热器的影响趋势相似。提出了一个无因次传质关联式，其结果与实验结果吻合较好。(C)2006爱思唯尔有限公司保留所有权利。
The regenerator is one of the essential components in a liquid desiccant air-conditioning system, whose efficiency directly influences the system performance. A performance test-bed for a cross-flow regenerator was established in the present analysis. Celdek structured packings were used in the regenerator and LiBr aqueous solution was used as the liquid desiccant. Moisture removal rate and regenerator effectiveness are adopted to describe the mass transfer performance of the regenerator. Effects of air and desiccant inlet parameters on the regenerator performance are experimentally investigated, and performance comparisons between present cross-flow regenerator and other counter-flow configurations available in the literature are also carried out. The comparison results show that the impacts of air and desiccant inlet parameters show similar tendency with those of counter-flow regenerators. A dimensionless mass transfer correlation is proposed, which gives results in good agreement with the experimental findings. (C) 2006 Elsevier Ltd. All rights reserved.