开式单喷嘴喷雾冷却均匀性实验研究

杨春光; 张浩; 刘军

doi:10.11884/HPLPB202032.200021

开式单喷嘴喷雾冷却均匀性实验研究

doi: 10.11884/HPLPB202032.200021

杨春光^{1, 2, 3,},
张浩^{1, 2},
刘军^{1, 2, ,}

1.
中国工程物理研究院应用电子学研究所，四川绵阳 621900
2.
中国工程物理研究院高能激光科学与技术重点实验室，四川绵阳 621900
3.
中国工程物理研究院研究生院，北京 100088

基金项目: 中物院高能激光重点实验室课题项目（2019HEL018）

详细信息

作者简介:
杨春光（1993—），男，硕士研究生，从事激光器高效热管理技术研究；pycg111@163.com

通讯作者:
刘　军（1972—），男，研究员，从事激光器高效热管理技术研究；1275137899@qq.com

中图分类号: TB69
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- 被引次数: 0
出版历程
- 收稿日期: 2020-01-17
- 修回日期: 2020-04-22
- 刊出日期: 2020-06-24

Experimental investigation on cooling uniformity of open single nozzle spray

Yang Chunguang^{1, 2, 3
,},
Zhang Hao^{1, 2},
Liu Jun^{1, 2
, ,}

1.
Institute of Applied Electronics, CAEP, Mianyang 621900, China
2.
Key Laboratory of Science and Technology on High Energy Laser, CAEP, Mianyang 621900, China
3.
Graduate School, China Academy of Engineering Physics, Beijing 100088, China

摘要

摘要: 针对高热流密度激光介质高效散热与均匀冷却技术需求，设计并搭建了以去离子水为冷却工质的开式单喷嘴喷雾冷却实验平台，实验研究获得了不同热流密度（16～110 W/cm²）、不同冷却工质流量（200～300 mL/min）以及不同喷雾高度（15～25 mm）下单相喷雾冷却换热系数及其冷却均匀性效果。结果表明：该实验工况下，不同热流密度条件下喷雾高度及工质流量对于单相喷雾冷却换热效率及温度均匀性影响显著；喷雾高度15 mm、工质流量200 mL/min时获得最大对流换热系数为5.93 W/（cm²·K）；喷雾高度15 mm、工质流量250 mL/min时面积20 mm×20 mm的热源表面温度均匀性最佳可优于0.6 ℃。
- 激光介质冷却 /
- 高热流密度 /
- 单相喷雾 /
- 温度均匀性
Abstract: Aiming at the requirements of efficient heat dissipation and uniform cooling for high heat flux laser medium, an experimental platform of open single nozzle spray was designed and established by using the deionized water as cooling medium. The spray cooling heat transfer coefficients and cooling uniformity effect in the single-phase region were obtained at different heat flux (16～110 W/cm²), flow rates (200～300 mL/min) and spray heights (15～25 mm). It is concluded from the experimental results that the cooling efficiency and temperature uniformity were significantly affected by the spray height and flow rate under different heat flux. The maximal heat transfer coefficient of 5.93 W/(cm²·K) was got at the spray height of 15 mm and flow rate of 200 mL/min, while the temperature uniformity could be greater than 0.6 ℃ with the heating area of 20 mm×20 mm at the spray height of 15 mm and flow rate of 250 mL/min.
- laser medium cooling /
- high heat flux /
- single-phase spray cooling /
- temperature uniformity

HTML全文

图 1 开式系统工艺图

Figure 1. Open system process diagram

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图 2 喷嘴流量与压阻

Figure 2. Nozzle flow rate vs pressure

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图 3 开式系统实物图

Figure 3. Photos of the open system

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图 4 模拟热源示意图

Figure 4. Sketch of the heat source

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图 5 表面温度与热流密度

Figure 5. Carves of surface temperature vs surface heat flux

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图 6 换热系数与热流密度关系曲线

Figure 6. Carves of heat transfer coefficient vs surface heat flux

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图 7 表面温差与热流密度

Figure 7. Surface temperature difference changes with surface heat flux

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