Experiment study on non-boiling heat transfer performance in spray cooling for high-power laser

被引：4
作者：
Wang, Yaqing [1 ]
Liu, Minghou [1 ]
Liu, Dong [1 ]
Xu, Kan [1 ]
机构：
[1] Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei
来源：
Zhongguo Jiguang/Chinese Journal of Lasers | 2009年 / 36卷 / 08期
关键词：
Cooling efficiency; Lasers; Non-boiling region; Spray cooling;
D O I：
10.3788/CJL20093608.1973
中图分类号：
学科分类号：
摘要：
Using water as coolant, Steinen 1.5, 2.0 full-cone nozzles with spray cone angle 60° were applied to study heat transfer performance of spray cooling for high-power laser in non-boiling regime when mass flow rates ranged from 3.26 L/h to 5.0 L/h. The results indicate that heat transfer can not be judged by mass flow rates only. For the same nozzle, the increasing of pressure and mass flow rates resulte in the increasing of heat trarsfer performance. For different nozzles, the heat transfer performance doesn't increase obvirously, if droplet velocity is not varied significantly, increased mass flow rates can change other spray parameters such as droplet flux, droplet size and film thickness, and all the parameters determine spray heat transfer performance together. Mass flow rates and droplet velocity are the key parameters to influence cooling efficiency. For the same nozzle, enhanced pressure could result in cooling efficiency drop. Compared with smooth wall, the rough wall has better heat transfer performance and cooling efficiency in non-boiling region.
引用
收藏
页码：1973 / 1978
页数：5
相关论文
共 19 条
  • [1] Ren H., Zhuang L., Li Y., Measurement of interaction potential between colloidal particles using dual optical tweezers, Chinese J. Lasers, 35, 1, pp. 151-155, (2008)
  • [2] Wang X., Zhang H., Ding G., Et al., Laser transmission welding polypropylene plastics, Chinese J. Lasers, 35, 3, pp. 466-471, (2008)
  • [3] Lu L., Zong R., Zhou Z., Et al., Study on the application of laser in cosmetology, Chinese Journal of Quantum Electronics, 19, 4, pp. 323-325, (2002)
  • [4] Tao Y., Huai X., Li Z., Et al., Advancement of cooling techniques in high-power solid state laser, Laser Journal, 28, 2, pp. 11-12, (2007)
  • [5] Chen J., A discussion on cooling systems of high power electronic equipment, International Electric Power for China, 6, 4, pp. 48-52, (2002)
  • [6] Chow L.C., Sehembey M.S., Pais M.R., High heat flux spray cooling, Annul. Rev. Heat Transfer, 8, pp. 291-318, (1997)
  • [7] Lin L., Ponapean R., Heat transfer characteristics of spray cooling in a closed loop, International Journal of Heat and Mass Transfer, 46, 20, pp. 3737-3746, (2003)
  • [8] Chen R.-H., Chow L.C., Navedo J.E., Effects of spray characteristics on critical heat flux in sub cooled water spray cooling, International Journal of Heat and Mass Transfer, 45, 19, pp. 4033-4043, (2002)
  • [9] Zhou Z., Xin H., Chen B., Et al., Evaporation characteristics of a single droplet in laser treatment of port wine stain in conjunction with cryogen spray cooling, Chinese J. Lasers, 35, 6, pp. 952-956, (2008)
  • [10] Rini D.P., Computer simulation of a spray cooling system with fc-72, (2001)
12