摘要
依据热管传热原理和传热强化技术,设计了一种在户外恶劣条件下用于移动基站、密闭机柜等的新型热翅板相变散热器,并采用风洞试验系统研究该散热器的传热与流动性能。试验结果表明:在相同的工况条件下,该散热器以R134a比以液氨为工质效果好;在以液氨作为工质的条件下,30%的充液率热翅板相变散热器的传热性能最好;在冷、热风进口风量分别从250 m^3·h^-1增加至500 m^3·h^-1的情况下,增加热风进口风量比增加冷风进口风量得到更好的散热效果。此外,还运用计算流体力学(CFD)技术对该散热器进行数值模拟,将数值模拟结果与试验数据进行比较,发现两者吻合度高,说明该数值计算模型可靠。
According to the principle of heat transfer of heat pipe and heat transfer enhancement technology,a novel and high efficient diffusion welded phase change heat-fin plate radiator(HFPR)is proposed and designed,which could be used for mobile base stations and closed cabinets in outdoor harsh conditions.The heat transfer and flow performance of the radiator are studied by wind tunnel test system.The experimental results indicate that the radiator has better heat dissipation if filled with R134a as phase change working fluid than ammonia and the filling ratio of 30%acetone is the best.It gets better heat dissipation effect by increasing the inlet air-flow of hot wind than the inlet air-flow of cool wind,when the air volume of cold and hot air inlet increases from 250 m^3·h^-1 to 500 m^3·h^-1 respectively.The heat dissipation of the radiator is also numerically simulated by the Computational Fluid Dynamics(CFD)software and the numerical simulation results agree well with the experimental data.It indicates the numerical model could be quite reliable.
作者
顾恒
朱庆莉
高素美
GU Heng;ZHU Qing-li;GAO Su-mei(Jinling Institute of Technology, Nanjing 211169, China)
出处
《金陵科技学院学报》
2020年第2期11-16,共6页
Journal of Jinling Institute of Technology
关键词
热管
基站散热
热翅板
相变散热器
heat pipe
mobile station heat dissipation
heat-fin plate
phase change radiator
