| 大冷量相变喷雾冷却的实验研究 |
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| 引用本文： | 刘秀芳,钟昕,李梦京,赵红利,侯予.大冷量相变喷雾冷却的实验研究[J].低温与超导,2012,40(1):47-52. |
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| 作者姓名： | 刘秀芳 钟昕 李梦京 赵红利 侯予 |
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| 作者单位： | 1. 西安交通大学能源与动力工程学院,西安710049;河南理工大学机械与动力工程学院,焦作454000
2. 西安交通大学能源与动力工程学院,西安,710049 |
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| 基金项目： | 国家自然科学基金资助项目，高等学校博士学科点专项科研基金资助项目，河南理工大学青年基金资助项目 |
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| 摘 要： | 相变喷雾冷却具有很高的换热效率和临界热流密度,为了获得大冷量相变喷雾冷却特性,文中设计并搭建了开式喷雾冷却性能实验台,采用R22制冷剂开展了大热流密度喷雾冷却特性的实验研究,详细研究了不同喷嘴入口压力、不同喷雾高度以及不同加热功率下R22的喷雾相变冷却效果。实验结果的分析表明:采用R22时最高热流密度可达到150W.cm-2,其对应的被冷却表面温度为-29.0℃,具有高热流密度及低冷却表面温度的显著特点;实验还从一定程度上揭示了喷嘴高度和喷嘴入口压力对R22喷雾冷却效果的影响。
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| 关 键 词： | 喷雾 相变冷却 R22 实验研究 |
Experimental study on large cooling load phase change spray cooling |
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| Liu Xiufang
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Zhong Xin
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Li Mengjing
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Zhao Hongli
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Hou Yu.Experimental study on large cooling load phase change spray cooling[J].Cryogenics and Superconductivity,2012,40(1):47-52. |
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| Authors: | Liu Xiufang Zhong Xin Li Mengjing Zhao Hongli Hou Yu |
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| Institution: | 1(1.School of Energy and Power Engineering,Xi’an Jiaotong University,Xi’an 710049,China; 2.School of Mechanical and Power Engineering,Henan Polytechnic University,Jiaozuo 454000,China) |
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| Abstract: | Phase change spray cooling is effective and efficient cooling method.In order to investigate the cooling characteristics of large cooling load phase change spray cooling,an open cycle test rig was designed and set up,with R22 as the refrigerant,large heat flux phase change spray cooling experiment was performed.The effects of spray cooling under different nozzle inlet pressures,different spray distances and different heat loads were studied in detail.The experimental results show that the heat flux could reach as high as 150 W·cm-2 when the cooling surface maintained a constant temperature of-29.0℃,which presented strongly the characteristics of spray cooling: High heat flux with low temperature of cooling surface.The results also reveal the influences of the spray distances and the inlet pressure on spray cooling effects. |
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| Keywords: | Spray Phase-change cooling R22 Experimental study |
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