Heat-transfer optimization of fluid loop radiator based on entransy analysis

被引：0
|
作者：
Liu X. [1 ,2 ]
Liang X. [1 ]
机构：
[1] Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, School of Aerospace Engineering, Tsinghua University, Beijing
[2] China Academy of Launch Vehicle Technology, Beijing
来源：
Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica | 2021年 / 51卷 / 11期
关键词：
Entransy dissipation; Liquid loop radiator; Optimization; Radiation;
D O I：
10.1360/SST-2020-0237
中图分类号：
学科分类号：
摘要：
To optimize the design of a liquid loop radiator based on entransy theory, the relationship between the heat dissipation rate and internal heat transfer process of a radiator was established. Then, the Lagrangian function was constructed to calculate the minimum value of the entransy dissipation of the radiator under limited radiator volume. The results show that the temperature gradient in the radiator panel is equal everywhere, i.e., when the heat flux is uniform everywhere, the radiator heat-transfer process is optimal. Based on the principle of uniform distribution of heat flux in the radiator and considering engineering application convenience, a radiator with a trapezoidal fin section was studied. The results show that when the total volume of the radiator is controlled, using a radiator panel with a trapezoidal section and increasing the thickness of the root of the radiator fin can optimize the heat transfer performance of the radiator, reduce the temperature of the working fluid of the fluid loop, and improve the heat dissipation ability of the radiator. © 2021, Science Press. All right reserved.
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页码：1382 / 1390
页数：8
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