Ideal efficiency analysis and comparison of condensing and liquid desiccant dehumidification
Ideal efficiency analysis and comparison of condensing and liquid desiccant dehumidification
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冷凝与液体除湿理想效率分析比较
DOI：
10.1016/j.enbuild.2012.03.012
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发表时间：
2012-06
影响因子：
6.7
通讯作者：
Yi Jiang
中科院分区：
文献类型：
--
作者：
Lun Zhang;Xiaohua Liu;Yi Jiang
本文采用冷凝式除湿和液体除湿两种除湿方法，得到了理想的除湿过程，并推导出两种除湿方法的最小输入功和理想COP。对于液体除湿，再生空气的含湿率是影响COP的最重要因素。对于冷凝式除湿，热沉温度是影响COP的最重要因素。除湿的实质是室内和室外两种不同湿度之间的水分输送。冷凝式除湿方式排入热沉的热量与液体除湿方式排入水槽的水分由于饱和流线上的热湿统一，可以进行比较。当冷凝式除湿的热沉为室外空气的露点时或室外空气饱和时，两种除湿方式的除湿效果相同。否则，冷凝式除湿的理想COP将低于液体除湿过程。
In this paper, ideal dehumidification process is achieved by both condensing dehumidification and liquid desiccant dehumidification methods, and the minimum input work and ideal COP of the two dehumidification methods are derived. For liquid desiccant dehumidification, the humidity ratio of regeneration air is the most important influencing factor of COP. For condensing dehumidification, the temperature of heat sink is the most important influencing factor of COP. The essence of dehumidification is transportation of moisture between indoor and outdoor two different humidity ratios. Exhaust heat into heat sink in condensing dehumidification method and exhaust moisture into moisture sink in liquid desiccant dehumidification mode can be compared, due to the fact that heat and moisture are unified in saturated line. The two dehumidification modes will have the same performance, when heat sink of condensing dehumidification is dew point of outdoor air by indirect evaporation or outdoor air is saturated. Otherwise, the ideal COP of condensing dehumidification will be lower than liquid desiccant dehumidification process.
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