摘要
微通道散热器是卷烟厂暖通空调系统中设备散热的有效部件。为改善设备散热性能,提升能效,提出了一种圆形空腔和矩形圆角直肋组合的微通道散热器,分别与圆形空腔散热器和矩形圆角直肋散热器对比,研究组合散热器的水热性能。改变矩形圆角直肋相对宽度(α)和长度(β),研究参数变化产生的性能影响。结果表明,组合散热器具有最好的综合热特性,将直肋与空腔耦合能够增强传热的同时降低摩擦阻力。当雷诺数小于355时,α=0.8的模型热效率最高,而当雷诺数大于355后,α=0.5的模型热效率最高。在所有雷诺数研究范围内,β=0.1的模型综合热特性最好。该研究提出了一种创新结构的组合微通道散热器,为在空调系统中实现节能减排提供了更高效的解决方案。
Microchannel heat sink is an effective component of heat dissipation in the HVAC system of Chengdu Cigarette Factory.In order to improve the heat dissipation performance and energy efficiency of the equipment,a microchannel heat sink with circular cavity and rectangular round corner straight fin was proposed.The hydrothermal performance of the combined heat sink was studied by comparing with the circular cavity heat sink and rectangular round corner straight fin heat sink respectively.The relative width(α)and length(β)of rectangular rounded ribs were changed to study the effect of parameter variation on performance.The results show that the combined heat sink has the best comprehensive thermal characteristics,and the coupling of the rib and the cavity can enhance the heat transfer and reduce the friction resistance.When the Reynolds number is less than 355,the thermal efficiency of the model withα=0.8 is the highest.When the Reynolds number is greater than 355,the thermal efficiency of the model withα=0.5 is the highest.In the range of Reynolds number studied,the model withβ=0.1 has the best comprehensive thermal characteristics.In this study,an innovative structure of the combined microchannel heat sink is proposed,which provides a more efficient solution for achieving energy saving and emission reduction in air conditioning systems.
作者
肖政
陶竞立
陈利
晏吉
宋佳楠
刘田
胡茂凌
Xiao Zheng;Tao Jingli;Chen Li;Yan Ji;Song Jianan;Liu Tian;Hu Maoling(Sichuan China Tobacco Industry Co.,Chengdu cigarette factory,Chengdu,610066)
出处
《制冷与空调(四川)》
2025年第4期501-509,571,共10页
Refrigeration and Air Conditioning
关键词
微通道散热器
空调系统
空腔与直肋
水热性能
数值模拟
Microchannel heat sink
Air conditioning system
Cavity and rib
Hydrothermal performance
Numerical simulation
作者简介
通讯作者:肖政(1978.11-),男,工程硕士,工程师,E-mail:46203313@qq.com。
