空调换热器表面排水性能计算模型、整体影响及改进方法综述

发布时间：2018-02-28 16:43

本文关键词： 空调换热器冷凝水滞留量表面排水性能显热换热效率流动阻力　出处：《机械工程学报》2017年04期 　论文类型：期刊论文

【摘要】：在空调运行过程中,当换热器表面温度低于空气露点温度时,换热器表面就会产生冷凝水。湿工况下附着在换热器表面的冷凝水若不能及时排除,会对换热器的传热效率、流动阻力等产生多方面的影响,从而影响空调系统的整体性能,增加空调系统能耗的同时还会降低用户舒适度。针对这一问题,通过文献调研,从三个方面对相关的研究工作进行总结分析:整理描述换热器表面排水性能和冷凝液滴状态的重要参数,并着重介绍计算表面液滴总滞留量的数学模型,分析影响表面液滴状态的多种因素;对换热器表面附着的冷凝水对换热器本身和整个空调系统的影响进行分析;接着整理增强换热器排水能力的主要方法。对这几个方面现有研究存在的缺陷进行分析,提出未来可能的研究方向。
[Abstract]:When the surface temperature of the heat exchanger is lower than the dew point temperature of air, condensate water will be produced on the surface of the heat exchanger. If the condensate water attached to the surface of the heat exchanger can not be eliminated in time, the heat transfer efficiency of the heat exchanger will be improved. Flow resistance has many effects on the overall performance of the air conditioning system. Increasing the energy consumption of the air conditioning system will also reduce the comfort of the users. In view of this problem, through literature research, The related research work is summarized and analyzed from three aspects: the important parameters for describing the surface drainage performance and condensing droplet state of the heat exchanger are sorted out, and the mathematical model for calculating the total retention of the surface droplets is introduced emphatically. The influence of condensate water attached on the surface of the heat exchanger on the heat exchanger itself and the whole air conditioning system is analyzed. Then the main methods to enhance the drainage capacity of heat exchangers are sorted out. The defects of the existing researches in these aspects are analyzed and the possible research directions in the future are put forward.
【作者单位】：浙江大学制冷与低温研究所;浙江大学浙江省制冷与低温技术重点实验室;
【基金】：高等学校博士学科点专项科研基金(20130101120144) 国家自然科学基金(51306160) 中央高校基本科研业务费专项资金(2015QNA4012)资助项目
【分类号】：TB657.2

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