流体机械

2015, v.43;No.517(07) 1-5

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单相阶段板式多喷嘴阵列喷雾冷却的试验研究
Experimental Study on Spray Cooling with Plate Multi-nozzle Array in the Non-boiling Regime

胡士松;刘伟;章玮玮;程文龙;
HU Shi-song;LIU Wei;ZHANG Wei-wei;CHENG Wen-long;Beijing institute of computer technology and application;University of Science and Technology of China;

摘要(Abstract):

喷雾冷却由于在较小的工质流量下可以实现很高的散热能力,在高热流密度散热、电子元器件热控等领域具有广阔的应用前景。针对较大面积的发热表面的温度控制和热量散出,本文建立闭式喷雾冷却循环系统,并选取板式多喷嘴阵列,对其在单相阶段瞬态和稳态时的换热特性进行研究。系统选取水为工质,冷却30mm×30mm的发热表面。试验中测试了板式多喷嘴阵列的雾化性能,并得出了在单相阶段时瞬态的温度变化曲线和不同体积流量下的喷雾冷却曲线。试验结果表明,板式多喷嘴阵列的雾化特性较为均匀,且喷雾冷却在单相阶段能达到较高换热性能,而流量对换热影响明显,在更大的流量下换热性能更显著。
The spray cooling can reach high cooling capacity with small flow rate,so it has broad application prospect in the field of high heat flux removal and thermal control of electronic chips. The closed loop spray cooling system was set up,the plate multi-nozzle array and big heating surface were used. Water was used as working fluid and the heating surface was 30 mm ×30mm. The atomization characteristics of plate multi-nozzle array were tested in the experiment. Transient temperature curves and spray cooling curves under different flow rate in the non-boiling regime were also obtained. The results indicated that the atomization characteristics were uniform,and plate multi-nozzle array could achieve a high heat transfer performance in the non-boiling regime. In addition,the flow rate affected heat transfer significantly,and the heat transfer was increased with the increasing of flow rate.

关键词(KeyWords): 喷雾冷却;高热流密度散热;板式多喷嘴;冷却曲线
spray cooling;high heat flux removal;plate multi-nozzle array;cooling curve

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作者(Author): 胡士松;刘伟;章玮玮;程文龙;
HU Shi-song;LIU Wei;ZHANG Wei-wei;CHENG Wen-long;Beijing institute of computer technology and application;University of Science and Technology of China;

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