化工进展2025，Vol.44Issue(7)：3727-3736,10.DOI:10.16085/j.issn.1000-6613.2024-0810
非对称结构脉动热管换热装置传热性能
Heat transfer performance analysis of pulsating heat pipe heat exchanger with asymmetric structure
摘要
Abstract
The pulsating heat pipe is a high-efficiency heat transfer element that is applied in electronic components cooling,energy utilization,etc.Many factors affect its start-up and operation characteristics,such as structure,work material,liquid filling rate,etc.The purpose of this paper was to achieve the asymmetric and staggered structure of pulsating heat pipe by adjusting the length of the local pipeline in the structure of the pulsating heat pipe.At the same time,the pulsating heat pipe heat exchanger device with the corresponding asymmetric structure was designed.Through experiments at 60℃heat source and different liquid filling rates,the pulsating heat pipe with asymmetric structure was researched.The results showed that the lowest start-up vibration heat source temperature of the pulsating heat pipe rose with the increase of the liquid filling rate.Under very low and high liquid filling rate,the pulsating heat pipe was not easy to start and sustain oscillation phenomenon,and oscillation flow frequency and energy intensity were lower.Under lower liquid filling rate,an effective workpiece movement could not form in the tube due to less workpiece.Under higher liquid filling rate,liquid mass was too much,mass running resistance was larger,and oscillation flow was not easy to circulate in the tube;the temperature difference between pulsating heat pipe evaporation section and condensing section was larger,being more than 15℃,and thermal resistance was larger,with lower equivalent coefficient of thermal conductivity and poor heat transfer performance.In 30%liquid filling rate and 50%liquid filling rate,the temperature difference between both ends of the pulsating heat pipe was smaller,being about 3℃,the thermal resistance was smaller,the equivalent thermal conductivity was higher,the pulsating heat pipe was more likely to achieve isothermal heat transfer,and the optimal liquid filling rate was about 50%.关键词
脉动热管/非对称/充液率/传热性能/换热装置Key words
pulsating heat pipe/asymmetric/liquid filling rate/heat transfer performance/heat exchanger分类
能源科技引用本文复制引用
刘建红,刘栋,商福民,杨凯,郑超凡,曹欣..非对称结构脉动热管换热装置传热性能[J].化工进展,2025,44(7):3727-3736,10.基金项目
吉林省科技厅科技发展计划(20240304101SF) （20240304101SF）
吉林省教育厅项目(JJKH20240789KJ) （JJKH20240789KJ）
吉林省科技发展计划(YDZJ202401324ZYTS). （YDZJ202401324ZYTS）
