Experimental Study on Condensation Heat Transfer Characteristics inside an Inclined Wave-Finned Flat Tube of Direct Air-Cooling System  

作　　者：WANG Haitao TAO Tao MEI Xuesong WANG Haijun GU Hongfang 

机构地区：[1]State Key Laboratory for Manufacturing Systems Engineering,Xi'an Jiaotong University,Xi'an 710049,China [2]Shaanxi Key Laboratory of Intelligent Robots,School of Mechanical Engineering,Xi'an Jiaotong University,Xi'an 710049,China [3]State Key Laboratory of Multiphase Flow in Power Engineering,Xi'an Jiaotong University,Xi'an 710049,China

出　　处：《Journal of Thermal Science》2021年第2期432-440,共9页热科学学报（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(No.11675128).

摘　　要：In this paper,the condensation heat transfer characteristics of parallel flow and counter flow inside an inclined wave-finned flat tube is investigated experimentally.The condensation heat transfer coefficients are analyzed based on the experimental results.Results of experiments show that condensation heat transfer coefficient decreases as the temperature difference Δt=ts-tw increases and mass flow rate decreases.The parallel flow has a similar development with the counter flow,and the condensation heat transfer coefficient of counter flow is less than that of parallel flow under the same air cooling conditions.In addition,condensation heat transfer coefficient correlations are also obtained under experimental ranges.The calculations agree well with the measured data and the agreement is seen to be within ±4% for the parallel flow and ±5% for the counter flow.

关 键 词：condensation heat transfer wave-finned fiat tube modified model parallel flow counter flow 

分 类 号：TK124[动力工程及工程热物理—工程热物理]