超声场下脉动热管传热研究分析  

Study and analysis of heat transfer in pulsating heat pipe under ultrasonic field

作　　者：韩晓春 罗孝学 曹士博 郝慧莉 王晓杰 李琳 蓝广林 Han Xiaochun;Luo Xiaoxue;Cao Shibo;Hao Huili;Wang Xiaojie;Li Lin;Lan Guanglin(Guangxi Key Laboratory of Ocean Engineering Equipment and Technology,Beibu Gulf University,Qinzhou,535011)

机构地区：[1]广西海洋工程装备与技术重点实验室,北部湾大学,钦州535011

出　　处：《低温与超导》2024年第6期49-57,共9页Cryogenics and Superconductivity

基　　金：广西省自然科学基金(2018GXNSFAA138157);广西高校中青年教师科研基础能力提升项目(2024KY0446)资助。

摘　　要：为了进一步优化脉动热管传热性能,利用超声波强化传热特性,脉动热管外围施加超声场进行强化传热研究。以蓄热材料放热过程为研究对象,分析超声场对脉动热管内不同工质的传热速率的影响,计算热回收率和超声场下的脉动热管材料的腐蚀速率。研究表明:超声波强化作用于相变材料潜热放热阶段效果显著;超声场显著提高了脉动热管以蒸馏水为工质时的传热性能;相比无水甲醇和乙醇,蒸馏水作为工质时热回收率最高,达到74.7%;超声场下全浸式腐蚀紫铜为材料的脉动热管,紫铜表面呈现出明显腐蚀形貌,腐蚀速率呈现线性增长,需采取防护措施降低腐蚀速率。In order to optimize the heat transfer performance of the Pulsating Heat Pipe(PHP),ultrasonic waves were used to enhance heat transfer coefficient,and an ultrasonic field was applied to the periphery of the PHP for research on heat transfer enhancement.The heat release process of thermal storage materials was used as the research object,the impact of ultrasonic field on the heat transfer rate of different working fluids in PHP was analysised,the heat recovery rate and the corrosion rate of the PHP material under the ultrasonic field were calculated.The results show that ultrasonic enhancement has a significant effect during the latent heat release stage of the phase change material;The ultrasonic field significantly improves the heat transfer performance of the PHP when using distilled water as the working fluid;compared to anhydrous methanol and ethanol,distilled water has the highest heat recovery rate as the working fluid,reaching 74.7%;under the ultrasonic field,the surface of the copper used in the fully PHP exhibites obvious corrosion morphology,and the corrosion rate showes a linear increase,necessitating the application of protective measures to reduce the corrosion rate.

关 键 词：强化传热 超声波 脉动热管 传热分析 相变材料 

分 类 号：TK114[动力工程及工程热物理—热能工程]