液体除湿空调除湿器性能研究

发布时间：2018-12-13 16:46

【摘要】：在液体除湿空调中,除湿器是系统的核心部件。本文搭建可用于实验研究的液体除湿空调系统中除湿器的实验台,对塔径300 mm、填料高度800 mm,以Li Cl溶液为除湿剂的除湿器布置测点进行实测。基于Mercel理论,根据热质平衡并结合D.I.Stevens的有效模型,建立适用于该液体除湿空调系统中的除湿器传热传质模型。从实验和理论模型两个方面分析除湿器进口各项参数对除湿量的影响,结果表明:理论值和实验值有很好的一致性,且数据差异较小,说明计算模型适应性良好,能准确的用于该除湿器的性能模拟测试,将实验与理论计算结果进行对比可知:在一定的工况范围内,除湿器的除湿量受进口溶液温度、浓度、质流密度等参数影响较大,其中溶液进口温度越低,除湿效果越显著,溶液进口浓度越低,除湿效果越好;溶液进口质流密度需控制在一定范围进行调节,才能显著提高除湿器性能;空气入口风速、干球温度以及含湿量对除湿出口的空气状态参数影响较弱。
[Abstract]:In liquid dehumidification air conditioning, dehumidifier is the core component of the system. In this paper, the dehumidifier of the liquid dehumidifier in the liquid dehumidification air conditioning system which can be used in the experimental research is built. The measuring points of the dehumidifier arrangement with the diameter of 300 mm, packing height of 800 mm, and the Li Cl solution as the dehumidifying agent are measured. Based on the Mercel theory, the heat and mass transfer model of the dehumidifier suitable for the liquid desiccant air conditioning system is established according to the heat and mass balance and the effective model of D.I.Stevens. The influence of dehumidifier inlet parameters on dehumidification is analyzed from two aspects of experimental and theoretical models. The results show that the theoretical and experimental values are in good agreement with each other, and the difference in data is small, which indicates that the model has good adaptability. It can be used in the performance simulation test of the dehumidifier accurately. Comparing the experimental results with the theoretical calculation results, it can be seen that the desiccant quantity of the dehumidifier is greatly affected by the inlet temperature, concentration and mass flow density of the desiccant in a certain range of working conditions. The lower the inlet temperature of the solution, the more obvious the dehumidification effect, the lower the inlet concentration of the solution, the better the dehumidification effect. In order to improve the performance of dehumidifier, the inlet mass flow density should be controlled in a certain range to improve the performance of dehumidifier, and the air inlet wind speed, dry ball temperature and moisture content have a weak effect on the air state parameters of the dehumidification outlet.
【作者单位】：上海理工大学能源与动力工程学院;上海市动力工程多相流动与传热重点实验室;中国船舶重工集团公司第七O四研究所;
【基金】：上海市科委建设项目(13DZ2260900)资助~~
【分类号】：TB657.2

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