全开缝式翅片管换热器结构参数优化  

Optimization of Structural Parameters of Fully Slit Finned Tube Heat Exchanger

作　　者：王方[1] 王鹏超 徐强 梁静静 王恒 WANG Fang;WANG Pengchao;XU Qiang;LIANG Jingjing;WANG Heng(School of Energy and Environment,Zhongyuan University of Technology,Zhengzhou 450007,China)

机构地区：[1]中原工学院能源与环境学院,郑州450007

出　　处：《实验室研究与探索》2020年第6期1-5,共5页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(U1504501);河南省高校科技创新人才支持计划(20HASTIT019);国家高端外国专家项目(GDW20164100039)。

摘　　要：为了提高空调末端干式风机盘管的换热性能,对全开缝式翅片管换热器的横纵向间距、翅片厚度、翅片长度、翅片宽度和翅片间距等结构参数进行优化。通过采用正交试验的方法,利用CFD软件进行数值模拟分析,对换热器结构进行优化设计,进而得出最优结构参数,并对最优结构参数的翅片管换热器进行换热特性研究。结果表明,在合理选取的参数范围内,最优结构参数为横向间距135 mm,纵向间距22 mm,翅片厚度0.6 mm,翅片长度90 mm,翅片宽度65 mm,翅片厚度2mm,其换热系数为28.730 W/(m^2·K)。由云图可以看出,管壁背面处存在滞留区,且导致此处的换热现象不明显。在空气流通截面较窄处,气流速度最高可达到5 m/s。In order to improve the heat transfer performance of the dry fan coil at the end of the air conditioner,the structural parameters such as transverse and longitudinal spacing of finned tube,thickness,length,width and spacing of the fin are optimized. By adopting the method of orthogonal test and using CFD software for numerical simulation analysis,the optimized design of heat exchanger structure was carried out to obtain the optimal structural parameters,and the heat transfer characteristics of finned tube heat exchanger with the optimal structural parameters were studied.The results show that,within the range of reasonably selected parameters,the optimal structural parameters are 135 mm transverse spacing,22 mm longitudinal spacing,0. 6 mm fin thickness,90 mm fin length,65 mm fin width and 2 mm fin thickness,and the heat transfer coefficient is 28. 730 W/ (m^2·K). As can be seen from the cloud map,there is a detention area on the back of the tube wall,which leads to the non-obvious heat transfer. At the narrow airflow section,the airflow velocity can reach up to 5 m/s.

关 键 词：参数优化 正交试验 全开缝式翅片管换热器 数值模拟 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]