采用膜除湿的空气制冷系统性能模拟与试验研究  

Simulation and experimental research on performance of air refrigeration system with membrane dehumidification

作　　者：孟维焕 郭宪民[1] 张京京 徐瀚洲 MENG Weihuan;GUO Xianmin;ZHANG Jingjing;XU Hanzhou(Tianjin Key Laboratory of Refrigeration Technology,Tianjin University of Commerce,Tianjin 300134,China)

机构地区：[1]天津商业大学天津市制冷技术重点实验室,天津300134

出　　处：《流体机械》2022年第5期47-53,61,共8页Fluid Machinery

基　　金：国家自然科学基金项目(51176142)。

摘　　要：为了提高空气循环制冷系统的安全性及效率,对使用膜除湿组件的空气循环制冷系统的除湿效果及系统性能进行了相关的模拟计算和试验研究,分析了无回热循环、一次、二次回热循环条件下压气机进气压力以及膜除湿组件进口压力对膜除湿组件的除湿效果及系统性能的影响。模拟和试验结果表明,不同工况条件下模拟数据与试验结果变化趋势一致;试验结果表明,二次回热循环系统,膜除湿组件进口压力为700 kPa工况下的膨胀机进口含湿量及涡轮水蒸汽冷凝量比进口压力为300 kPa工况分别降低了33.03%,57.58%,而系统COP降低了约50.61%;3种循环的对比表明,在系统中增加回热器可有效减小系统中含湿量及水蒸汽凝结量,提高系统制冷量及COP,与一次回热循环相比,二次回热循环系统的平均制冷量及COP分别提高了约17.46%,14.13%。In order to improve the safety and efficiency of air circulation refrigeration system,the dehumidification effect and system performance of the air refrigeration system using membrane dehumidification unit(MDU)were simulated and studied experimentally.The influences of the inlet pressure of MDU and compressor on dehumidification effect and system performance were analyzed for the traditional refrigeration system,primary and secondary regenerative systems.The simulated and experimental results indicate that the trends of simulation data and experimental results under different working conditions are consistent.The experimental results show that in the secondary regenerative system,the inlet moisture content of the expander and the condensation amount of water vapor in the turbine under the condition of 700 kPa inlet pressure of the MDU are reduced by 33.03%and 57.58%respectively compared with the working condition of 300 kPa inlet pressure of the MDU,and the COP of the system is reduced by about 50.61%;The comparison of the three types of refrigeration cycles indicates that the use of primary and secondary regenerative systems can effectively reduce the moisture content and the mass of the condensed water of the system,and increase the refrigeration capacity and COP.Compared with the primary regenerative cycle,the average refrigeration capacity and COP of the secondary regenerative system are increased by about 17.46%and 14.13%respectively.

关 键 词：空气循环 膜除湿 含湿量 除湿量 

分 类 号：TH12[机械工程—机械设计及理论] TB657[一般工业技术—制冷工程]