气液分离式管内凝结冷凝器的实验研究  

Experimental study on vertical tube condenser with liquid-vapor separation

作　　者：范亚坤[1,2] 贾力[1,2] 党超[1,2] 

机构地区：[1]北京交通大学机械与电子控制工程学院,北京100044 [2]北京交通大学微细尺度流动与相变传热北京市重点实验室,北京100044

出　　处：《北京交通大学学报》2016年第6期115-121,共7页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：国家科技支撑计划资助项目(2012BAB12B02)

摘　　要：设计了一种新型气液分离式管内凝结冷凝器,对该冷凝器进行了实验测试,并与卧式壳管式冷凝器进行了对比分析.研究结果表明：在质量流量为220-330kg/h,饱和温度为35℃、40℃和45℃时,气液分离式管内凝结冷凝器的传热系数线性增大.在高质量流量下,其传热性能明显优于卧式壳管式冷凝器.实验条件范围内,采用气液分离式管内凝结冷凝器的系统比采用卧式壳管式冷凝器的系统制冷剂的出、入口压降降低了45.1%-50.7%,排气压力提高了约1.9%,COP提高了5.0%-9.3%.气液分离式管内凝结冷凝器具有更好的换热性能,有效提高了系统的效率.A new liquid-vapor separation condenser is designed in this paper.The condenser is tested in a standard cooling system and compared with the horizontal shell-tube condenser（HSC）in their heat-exchange performance.The results show that the heat transfer coefficient of the intube-condensation liquid-vapor separation condenser（ILSC）increases linearly when the mass flow rate varying from 220-330kg/h and the saturated temperature is at 35℃,40℃and 45℃.Moreover,the heat transfer coefficient of the condenser is considerably higher than the HSC.In addition,when the condenser of the cooling system is displaced with the newly-designed one,the pressure drop of the refrigerant between the inlet and outlet is decreased 45.1%-50.7%.The exhaust pressure and the COP（Coefficient of Performance）increased 1.9% and 5.0%-9.3%,respectively.In conclusion,ILSC possesses better heat transfer performance than the HSC and makes the cooling-system efficiency improved.

关 键 词：管内冷凝 气液分离 冷凝器 换热性能 制冷系数 

分 类 号：TK172[动力工程及工程热物理—热能工程]