喷雾参数对闪蒸冷却换热效果影响的数值研究
发布时间：2018-07-14 21:41
【摘要】：真空闪蒸冷却是利用液体工质在真空环境下迅速闪蒸吸热的特点来冷却加热表面的新型冷却方式,其充分利用工质潜热,散热能力强,在航天热控方面有广阔的应用前景。本文用数值研究了喷雾张角、喷雾高度、喷雾压力对水工质闪蒸冷却换热效果的影响。研究结果表明:喷雾压力越大、高度越小,发热表面温度越低,换热量越大,表面温度不均匀性越小;30°喷雾张角比60°换热效果好。本文的研究结果为闪蒸器的优化设计提供了理论基础。
[Abstract]:Vacuum flash cooling is a new cooling method of cooling the heating surface with the characteristics of rapid flash and heat absorption of liquid working fluid in vacuum environment. It makes full use of the latent heat of the working material, and has a strong heat dissipation capacity. It has a broad application prospect in the space thermal control. In this paper, the spray angle, spray height and spray pressure have been studied in this paper. The results show that the larger the spray pressure, the smaller the height, the lower the temperature of the heating surface, the greater the heat transfer, the smaller the surface temperature inhomogeneity; the 30 degree spray angle is better than the 60 degree heat exchange. The research results of this paper provide the theoretical basis for the optimization design of the flash evaporator.
【作者单位】： 中国科学技术大学热科学和能源工程系;
【基金】：国家自然科学基金资助项目(No.51376169)
【分类号】：TK124
本文编号：2123039
[Abstract]:Vacuum flash cooling is a new cooling method of cooling the heating surface with the characteristics of rapid flash and heat absorption of liquid working fluid in vacuum environment. It makes full use of the latent heat of the working material, and has a strong heat dissipation capacity. It has a broad application prospect in the space thermal control. In this paper, the spray angle, spray height and spray pressure have been studied in this paper. The results show that the larger the spray pressure, the smaller the height, the lower the temperature of the heating surface, the greater the heat transfer, the smaller the surface temperature inhomogeneity; the 30 degree spray angle is better than the 60 degree heat exchange. The research results of this paper provide the theoretical basis for the optimization design of the flash evaporator.
【作者单位】： 中国科学技术大学热科学和能源工程系;
【基金】：国家自然科学基金资助项目(No.51376169)
【分类号】：TK124
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