本文采用铝箔片作为模拟热源,结合红外热成像技术,对喷雾冷却换热特性进行可视化研究.发现相对于普通实心喷嘴,所喷射液滴轨迹具有切向力的旋转轨迹的喷嘴所得到的换热能力更强,但是在热沉表面温度分布上,不能产生带有旋转切向力的液滴的喷嘴效果更好;随着薄膜热源的输入功率的升高,其喷雾冷却的换热系数随之减少.在质量流量及喷嘴压力较高条件下,这种趋势更为明显.
参考文献
| [1] | Jungho Kim .Spray cooling heat transfer: The state of the art[J].International journal of heat and fluid flow,2007(4):753-767. |
| [2] | Ruey-Hung Chen;Louis C. Chow;Jose E. Navedo .Optimal spray characteristics in water spray cooling[J].International Journal of Heat and Mass Transfer,2004(23):5095-5099. |
| [3] | Ruey-Hung Chen;David S. Tan;Kuo-Chi Lin;Louis C. Chow;Alison R. Griffin;Daniel P. Rini .Droplet and Bubble Dynamics in Saturated FC-72 Spray Cooling on a Smooth Surface[J].Journal of heat transfer: Transactions of the ASME,2008(10):101501-1-101501-9-0. |
| [4] | TIMOTHY A. SHEDD .Next Generation Spray Cooling: High Heat Flux Management in Compact Spaces[J].Heat Transfer Engineering,2007(2):87-92. |
| [5] | A.G. Pautsch;T.A. Shedd .Spray impingement cooling with single- and multiple-nozzle arrays. Part Ⅰ: Heat transfer data using FC-72[J].International Journal of Heat and Mass Transfer,2005(15):3167-3175. |
| [6] | S. Freund;A. G. Pautsch;T. A. Shedd;S. Kabelac .Local heat transfer coefficients in spray cooling systems measured with temperature oscillation IR thermography[J].International Journal of Heat and Mass Transfer,2007(9/10):1953-1962. |
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%