Heat transfer performance of oscillating heat pipe with micro-nano droplets of liquid metal

被引：0
|
作者：
Cui W. [1 ]
Jiang Z. [1 ]
Hao T. [1 ]
Wen R. [1 ]
Ma X. [1 ]
机构：
[1] Institute of Chemical Engineering, Dalian University of Technology, Dalian
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2022年 / 41卷 / 01期
关键词：
Heat transfer performance; Liquid metal; Micro-nano droplets; Oscillating heat pipes; Surfactant;
D O I：
10.16085/j.issn.1000-6613.2021-0233
中图分类号：
学科分类号：
摘要：
Galinstan, a room temperature liquid metal, combines both the features of liquid and metal. Utilizing the oscillating motion of the mixed working fluids of liquid metal and surfactant solution, a high thermal conductivity mixed liquid metal self-dispersed micro-nano droplets in the oscillating heat pipe (OHP) was formed with high heat transfer performance. 6-turn flat plate oscillating heat pipe with Galinstan and surfactant as the working fluids was investigated visually and experimentally under different liquid metal filling ratios and heat input in this work. The results demonstrated that liquid metal was driven to oscillate with the pressure difference induced by phase change of working fluids and broke up into spherical droplets. It was hard for the droplets to coalescence because of exited surfactant solutions. There were nano-particles with the diameter of 410-520nm, left in the surfactant solutions after the oscillation of liquid metal. When the filling ratios of liquid metal was 20%-25%, the high viscosity and mass of liquid metal spherical droplets hindered the oscillating motion of the mixed working fluids easily and thus increased the thermal resistance of the oscillating heat pipe. When the filling ratios was 5%-10%, the mixed working fluids coupled the high thermal conductivity of the liquid metal and the heat transfer performance was improved effectively and the thermal resistance was reduced by 11.21% at most when the liquid metal filling ratio was 5%. © 2022, Chemical Industry Press Co., Ltd. All right reserved.
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页码：95 / 103
页数：8
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