【作者】 刘金平； 叶灿滔； 陈军； 刘雪峰；

【Author】 Liu Jinping Ye Cantao Chen Jun Liu Xuefeng(College of Electric Power, South China University of Technology, Guangzhou, 510640, Guangdong China)

【机构】 华南理工大学电力学院；

【摘要】 风冷冷凝器的主要热阻在空气侧,迎面风速、流场的均匀性以及管排数对冷凝温度以及空调器的性能有很大影响。本文采用热线风速仪对风冷冷凝器空气入口侧流速进行了测量,结果表明:风冷冷凝器的风速分布是不均匀的,风速的最大值和最小值相差将近约4倍。2排管冷凝器的性能优于3排管的,风量增多23.1%,冷凝温度降低10.1℃,空调器的COP升高26.7%。因此在风冷冷凝器的设计时,应进行综合考虑翅片结构、翅片间距、管排数、空气流速等因素的优化。更多还原

【Abstract】 The dominant thermal resistance of air-cooled condenser is usually on the air side. The facing velocity, the uniformity of the velocity profile and the number of tube rows affect evidently the over-all heat transfer coefficient, condensing temperature and the COP of the air conditioner. The experimental studies based on the IFV900A Intelligent Hot Wire Anemometer were carried out. The test results indicated that the velocity profile through the heat transfer surface is nonuniformity, the maximum velocity is about 4 times of the minimum velocity. The performance of the 2 tube rows condenser is better than that of the 3 tube rows condenser. The volume flow of the air which passed through the condenser increases 23.1%, The condensing temperature decrease 10.1℃ and COP of the air conditioner rises 26.7%. The type of the fin, the fin pitch, the number of tube rows and the velocity profile must be considered when air-cooled condenser of an air conditioner was designed.更多还原