以水为冷却介质,对半实心旋流式机械雾化喷嘴的雾化性能及"无沸腾"区换热性能进行实验研究.PDPA的测试结果表明,该喷嘴在喷雾区有一明显的液滴速度、液滴直径减小的回流区,且距喷口越近,回流越明显.对质量通量为11.67～29.06 kg/(m2s)之间的换热性能研究发现,热流、换热系数均随着流量通量的增加而增强;壁面温度对"无沸腾"区换热亦有一定的影响,且壁面温度愈高,换热性能亦愈强.给出了反映壁面温度影响的无量纲参数§,并对Reynolds数为116.2～289.2的实验数据进行拟合得到反映"无沸腾"区换热特性的无量纲关系式.
参考文献
| [1] | Eric A. Silk;Eric L. Golliher;R. Paneer Selvam .Spray cooling heat transfer: Technology overview and assessment of future challenges for micro-gravity application[J].Energy conversion & management,2008(3):453-468. |
| [2] | J. Yang;L. C. Chow;M. R. Pais .Nucleate boiling heat transfer in spray cooling[J].Journal of heat transfer: Transactions of the ASME,1996(3):668-671. |
| [3] | I. Mudawar;K. A. Estes .Optimizing and predicting CHF in spray cooling of a square surface[J].Journal of heat transfer: Transactions of the ASME,1996(3):672-679. |
| [4] | Lanchao Lin;Rengasamy Ponnappan .Heat transfer characteristics of spray cooling in a closed loop[J].International Journal of Heat and Mass Transfer,2003(20):3737-3746. |
| [5] | Karwa N;Kale SR;Subbarao PMV .Experimental study of non-boiling heat transfer from a horizontal surface by water sprays[J].Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics,2007(2):571-579. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%