排管参数对翅片管式蒸发器换热性能影响的仿真研究  

Simulation study on the influence of pipe parameters on the heat exchange performance of finned tube evaporator

作　　者：王进 石艳青 于贺春[1] 张国庆[1] 王文博 王仁宗[1] 张素香[1] WANG Jin;SHI Yanqing;YU Hechun;ZHANG Guoqing;WANG Wenbo;WANG Renzong;ZHANG Suxiang(School of Mechatronics Engineering,Zhongyuan University of Technology,Zhengzhou 450007,China)

机构地区：[1]中原工学院机电学院,河南郑州450007

出　　处：《中原工学院学报》2022年第5期52-58,共7页Journal of Zhongyuan University of Technology

基　　金：国家自然科学基金项目(518775586);中国纺织工业联合会计划项目(2019067,2017104)。

摘　　要：鉴于新型制冷剂R134a在空调蒸发器领域的应用良好,通过仿真模拟研究了管径、材质、排管数目、管内制冷剂的质量流量等排管参数对翅片管式蒸发器换热性能的影响。结果表明:材质为铜管时,随着制冷剂质量流量的增大,蒸发器的出口制冷剂干度在大体上先减小后增大;铜管管径或排管数目减小时,制冷剂与管道的摩擦作用增大,制冷剂的流动阻力增大,蒸发器的出口压降会急剧增大,总换热量会缓慢增大;在管径、排管数目、制冷剂质量流量保持不变的情况下,铝管与铜管的蒸发器换热性能差异较小。In order to study the heat transfer performance of a new refrigerant R134a in the field of air conditioning evaporators,the effects of tube parameters such as tube diameter,material,tube number and refrigerant flow rate on the heat transfer performance of finned tube evaporator were studied by simulation.The results show that when the material is the copper tube,the outlet dryness of refrigerant first decreases and then increases with the increase of refrigerant flow rate.When the diameter of the copper pipe or the number of pipe rows decreases,the friction and resistance between refrigerant and pipe increase,and the outlet pressure drop increases significantly,while the total heat transfer increases slowly.The difference in heat exchange performance between the aluminum tube and the copper tube evaporators are small under the constant diameter,number of tubes and refrigerant flow rate.The results can provide basic data for the design and development of new finned tube evaporators.

关 键 词：翅片管式蒸发器 换热性能仿真 材质 管径 

分 类 号：TH12[机械工程—机械设计及理论] TB65[一般工业技术—制冷工程]