R410A水平三维强化管蒸发换热实验  

Experimental Research on Evaporation Heat Transfer of R410A Horizontal Three-Dimensional Enhanced Tube

作　　者：程洪 李蔚[1,2] 高宇 吴俊杰 王嘉程 石绮云 何燕[1] CHENG Hong;LI Wei;GAO Yu;WU Junjie;WANG Jiacheng;SHI Qiyun;HE Yan(Department of Mechanical and Electrical Engineering,Qingdao University of Science and Technology,Qingdao 266061,China;Department of Energy Engineering,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]青岛科技大学机电工程学院,山东青岛266061 [2]浙江大学能源工程学院,浙江杭州310027

出　　处：《青岛科技大学学报（自然科学版）》2024年第1期108-114,共7页Journal of Qingdao University of Science and Technology:Natural Science Edition

基　　金：国家自然科学基金项目(52076187).

摘　　要：针对传热管内蒸发换热特性,开展了R410A在铜及不锈钢光管和涟漪纹管管内换热特性的实验研究,分析了部分流型对管内蒸发的换热机理。实验工况:饱和温度为6℃,制冷剂质量流速为100~200 kg·(m^(2)·s)^(-1),干度范围0.1~0.9。验证了光滑管内的流型,结果与Wojtan流型图的预测具有较好的一致性。实验结果表明:蒸发换热系数随质量流速增加而增加。换热系数与流型相关。压降主要取决于质量流速和干度。与光滑管相比较,传热强化率为1.27~1.96,沸腾压降增加了11%~36%。In order to investigate the evaporation heat transfer characteristics in heat transfer tubes,the experimental study on heat transfer characteristics of R410A in copper and stainless steel smooth tubes and corrugated tubes was carried out in this paper.The heat transfer mechanism of partial flow pattern to evaporation in tube is analyzed.The experimental conditions are:the saturation temperature is 6℃,the mass flow rate of refrigerant is 100—200 kg·(m^(2)·s)^(-1),and the vapor quality range is 0.1—0.9.The flow patterns in smooth tubes are verified,and the results are in good agreement with the predictions of Wojtan flow patterns map.The experimental results show that the evaporation heat transfer coefficient increases with the increase of mass flow rate.Heat transfer coefficient is related to flow pattern.Pressure drop mainly depends on mass flow rate and vapor quality.Compared with the smooth tube,the heat transfer enhancement rate is 1.27—1.96,and the boiling pressure drop increases by 11%—36%.

关 键 词：蒸发换热 三维强化管 换热系数 压降 

分 类 号：TK124[动力工程及工程热物理—工程热物理]