Experimental investigation on the mass transfer performance of a novel packing used for liquid desiccant systems
Experimental investigation on the mass transfer performance of a novel packing used for liquid desiccant systems
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液体干燥剂系统新型填料传质性能的实验研究
DOI：
10.1080/23744731.2016.1206794
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发表时间：
2017-01
影响因子：
1.9
通讯作者：
Zhang Xiaosong
中科院分区：
文献类型：
--
作者：
Chen Tingting;Dai Zhichao;Yin Yonggao;Zhang Xiaosong
结构填料由于具有气压降小、传热传质面积大等优点，在液体干燥剂系统中得到了广泛的应用。然而，与随机填料相比，结构化填料通常价格昂贵且传质差。为了提供性价比高、传质性能优良的结构填料，本文提出并设计了z型纱网填料。在夏季条件下对该填料的除湿和再生性能进行了实验测试。研究发现，z型填料具有优良的除湿性能，其传质系数在6.5 ~ 14.2 g/m2s之间，比波纹纤维素填料和植物纤维填料平均高70%左右。虽然新型填料的除湿率和除湿效率较低，但可以通过缩短纱布之间的距离使其更加紧密来克服这一缺点。z型填料的再生性能也与植物纤维填料相当。进一步进行了经济分析，验证了在相同的除湿/蒸发速率下，z型填料的成本较低。拟议的包装预计将成为现有包装的替代方案。
The structured packing has been widely used in the liquid desiccant systems due to low air pressure drop and large heat and mass transfer area. However, the structured packing is usually expensive and poor in mass transfer against the random packing. In order to provide the cost-effective structured packing with excellent mass transfer performance, Z-type packing made of gauze is proposed and designed in this article. The dehumidification and regeneration performance of the proposed packing are tested experimentally under summer conditions. It is found that the Z-type packing has excellent dehumidification performance with the mass transfer coefficient ranging from 6.5 to 14.2 g/m2s, about 70% higher than the corrugated cellulose packing and the plant fiber packing on average. Although the novel packing is lower in the moisture removal rate and the dehumidification efficiency, it could be made more tightly by shortening the distance between gauze sheets to overcome the shortcoming. The regeneration performance of the Z-type packing is also comparable with the plant fiber packing. The economic analysis is further conducted and it verifies the low cost of the Z-type packing under the same moisture removal/evaporation rate. The proposed packing is expected to be an alternative to the existing packings.
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DOI：
10.1016/j.ijheatmasstransfer.2007.11.040
发表时间：
2008-07
影响因子：
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作者：
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DOI：
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发表时间：
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期刊：
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影响因子：
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通讯作者：
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