Flow boiling heat transfer of water in microchannel heat sink

被引：0
作者：
V. V. Kuznetsov
A. S. Shamirzaev
机构：
[1] Russian Academy of Sciences,Kutateladze Institute of Thermophysics, Siberian Branch
来源：
Journal of Engineering Thermophysics | 2012年 / 21卷
关键词：
Heat Transfer; Heat Sink; Heat Mass Transfer; Steam Generator; Boiling Heat Transfer;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The flow boiling heat transfer of water in a microchannel heat sink with variable initial vapor quality at the inlet is investigated. The stainless steel microchannel heat sink contains ten 640 × 2050 µm channels with a length of 120 mm; the wall roughness is 10 µm. The data on the local heat-transfer coefficient distribution in heat sink length are obtained in the range of mass fluxes from 30 to 90 kg/m2s, heat fluxes from 40 to 170 kW/m2, and vapor qualities from 0 to 1. The heat transfer instability associated with dry spots resulting from insufficient wetting of channel walls introduces substantial contribution to the heat transfer mechanism and leads to decreasing heat transfer in heat sink length downward the flow. The developed method for calculating the flow boiling heat transfer of water in a microchannel heat sink allows more accurate prediction of heat transfer drop than available methods.
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页码：28 / 35
页数：7
相关论文
共 45 条
[1]  
Tran T.N.(1996)Small Circular and Rectangular Channel Boiling with Two Refrigerants Int. J. Multiphase Flow 22 485-498
[2]  
Wambsganss M.W.(2000)Flow Boiling Heat Transfer of Freon R11 and HCFC123 in Narrow Passages Int. J. Heat Mass Transfer 43 3347-3358
[3]  
France D.M.(2004)An Experimental Investigation of Flow Boiling Characteristics of Water in Parallel Microchannels J. Heat Transfer 126 518-526
[4]  
Bao Z.Y.(2001)Heat Transfer Correlation for Boiling Flows in Small Rectangular Horizontal Channels with Low Aspect Ratios Int. J. Multiphase Flow 27 2043-2062
[5]  
Fletcher D.F.(2003)Flow Boiling Heat Transfer in Two-Phase Microchannel Heat Sinks, I. Experimental Investigation and Assessment of Correlation Methods Int. J. Heat Mass Transfer 46 2755-2771
[6]  
Haynes B.S.(2001)Two-Phase Heat Transfer to a Refrigerant in a 1 mm Diameter Tube Int. J. Refrig. 24 51-56
[7]  
Steinke M.E.(1998)Evaporation Heat Transfer and Pressure Drop of Refrigerant R134a in a Small Pipe Int. J. HeatMass Transfer 41 3072-3083
[8]  
Kandlikar S.G.(2005)Two-Phase Flow in High-Heat-Flux Microchannel Heat Sink for Refrigeration Cooling Applications, pt. II, Heat Transfer Characteristics Int. J. Heat Mass Transfer 48 941-955
[9]  
Lee H. J.(2005)Vertical Flow Boiling of Refrigerant R134a in Small Channels Int. J. Heat Fluid Flow 26 296-306
[10]  
Lee S. Y.(2005)Boiling Heat Transfer in RectangularMicrochannels with Reentrant Cavities Int. J. Heat Mass Transfer 48 4867-4886
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