翅片类型对风冷冷凝器空气侧特性影响的分析  

Analysis of Impacts of Fin Type on Air-Side Performance of an Air Cooled Condenser

作　　者：陈洁璐 蔡姗姗[1] 陈焕新[1] 应必业 唐小波 白韦 古汤汤 CHEN Jielu;CAI Shanshan;CHEN Huanxin;YING Biye;TANG Xiaobo;BAI Wei;GU Tangtang(Huazhong University of Science and Technology,Wuhan,Hubei 430074,China;Ningbo Aux Air Conditioning Company,Ningbo,Zhejiang 315000,China)

机构地区：[1]华中科技大学,湖北武汉430074 [2]宁波奥克斯空调有限公司,浙江宁波315000

出　　处：《制冷技术》2017年第3期49-52,75,共5页Chinese Journal of Refrigeration Technology

基　　金：国家自然科学基金资助项目(No.51076048)

摘　　要：本文运用Fluent软件构建3种翅片类型的风冷冷凝器局部模型,对管外空气侧的流动与换热过程进行数值模拟。模拟结果通过实验数据验证,并进行了较为详细的误差分析。在此基础上,进一步分析3种翅片结构下,管外换热系数和摩擦因子随进风速度的变化规律,辨识3种翅片的适用范围。同时,通过场协同理论对翅片截面上的温度场与速度场进行协同性分析,分析结果对冷凝器翅片结构的设计与改进提供一定参考依据。In this paper,a3-D Fluent model has been built on the unit section of a fin-and-tube heat exchanger toinvestigate the air-side performance of a typical air cooled condenser by numerical simulation.Three different typesof fins,including flat fins,wavy and louvered fins,have been considered in this paper.The simulation results arevalidated according to the experimental data and the errors are discussed in detail.Based on the verified model,theimpact of air velocity on the heat transfer and friction coefficients are further discussed to provide recommendedapplication ranges of these three types of fins.Meanwhile,both the temperature and the velocity fields are studiedaccording to the analysis of field synergy,which can be treated as a reference on the structure improvement andoptimal design of the fin-and-tube heat exchanger.

关 键 词：翅片管换热器 传热因子 摩擦因子 场协同 

分 类 号：TB657.2[一般工业技术—制冷工程] TK124[动力工程及工程热物理—工程热物理]