Experimental and theoretical analysis of heat transfer characteristics of spray cooling in a closed loop

被引：0

作者：

Cheng W.-L. ^{[1
]}

Zhao R. ^{[1
]}

Han F.-Y. ^{[1
]}

Liu Q.-N. ^{[1
]}

Fan H.-L. ^{[2
]}

机构：

[1] University of Science and Technology of China

[2] China Academy of Space Technology

来源：

Yuhang Xuebao/Journal of Astronautics | 2010年 / 31卷 / 06期

关键词：

Heat transfer; High rate heat flux removal; Spray cooling; Thermal control;

D O I：

10.3873/j.issn.1000-1328.2010.06.026

中图分类号：

学科分类号：

摘要：

Spray cooling is a promising candidate to provide high rate heat flux removal in spacecraft thermal control. A mathematical model of spray cooling heat transfer characteristics is presented based on the fundamentals of bubble dynamics and heat transfer, and the predictions by the model coincide well with the experimental results in this paper. The heat transfer characteristics including spray cooling curve, temperature gradient on the heating surface and so on in a closed loop are obtained by both experiment and model simulation. The analyzed results show that: 1) the temperature distribution on the heating surface is not uniform, however the maximal temperature difference is less than 5°C; 2) spray cooling curves are almost in the two phase region, thus resulting in that the heat transfer in the closed loop system is stronger than that under the normal pressure condition due to the lower pressure in the spray chamber.

引用

页码：1666 / 1671

页数：5

共 11 条

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