风冷式翅片管分液冷凝器的实验研究  

Experimental Study on Air-cooled Finned-tube Condenser With Liquid-vapor Separators

作　　者：孙鼎皓 贾力 党超 SUN Dinghao;JIA Li;DANG Chao(Institute of Thermal Engineering,School of Mechanical,Electronic and Control Engineering,Beijing Jiaotong University,Beijing100044,China;Beijing Key Laboratory of Flow and Heat Transfer of Phase Changing in Micro and Small Scale,Beijing 100044,China;China Quality Certification Centre,Beijing 100070,China)

机构地区：[1]北京交通大学机械与电子控制工程学院热能工程研究所,北京100044 [2]微细尺度流动与相变传热北京市重点实验室,北京100044 [3]中国质量认证中心,北京100070

出　　处：《工程热物理学报》2023年第9期2572-2577,共6页Journal of Engineering Thermophysics

基　　金：国家重点研发计划(No.2019YFE0104900)。

摘　　要：通过将U型管分液装置安装到平行流冷凝器中开展实验研究,并且进行了实验结果分析。本文研究了进风速度的变化对分液装置分液量的影响,还研究了不同平行流冷凝器的换热能力、压降变化以及单元性能系数的随风速的变化情况。实验结果显示:风速越大,分液装置的分液量越大,分液率越小;在二级分液冷凝器中,二级分液装置的分液量要大于一级分液装置。U型分液装置的设计使得冷凝器的换热能力得到了大幅度提升,此外带有分液装置的冷凝器相较于无分液装置的冷凝器,具有更低的压降以及更高的单元性能系数。The U-type separator was installed in parallel fow condenser for experimental research,and the experimental results were analyzed.In this paper,the infuence of the change of air velocity on the liquid separation capacity of the liquid-vapor separator was studied.The heat transfer capacity,pressure drop and unit coeficient of performance of different parallel fow condensers were also studied.The experimental results showed that the larger the air speed was,the larger the liquid separation volume of the liquid-vapor separator was,and the smaller the liquid separation rate was.The separating volume of the second separator was greater than that of the fist separator in the parallel flow condenser with two U-type separators.U-type separator had greatly improved the heat exchange capacity of the condenser.In addition,the condenser with liquid separator had lower pressure drop and higher unit coefficient of performance than the condenser without liquid-vapor separator.

关 键 词：风冷 U型分液 冷凝换热 平行流冷凝器 

分 类 号：TK123[动力工程及工程热物理—工程热物理]