마이크로 채널에서 물의 비등 열전달 특성
Boiling Heat Transfer Characteristics of Deionized Water in Microchannel
2
조회
0
다운로드
6
인용
0
참고문헌
키워드
초록
본 연구에서는 500㎛ 의 수력 직경을 가지는 마이크로 채널에서 물에 대한 유동 비등 열전달계수를 측정하기 위한 실험적 연구를 수행하였다. 실험 영역은 열유속이 100∼400 kW/㎡이고, 증기 건도가0∼0.2 그리고 질량유속이 200, 400 그리고 600 kg/m2s의 범위에서 이루어졌다. 실험결과 측정된 열전달계수는 질량유속과 증기건도에는 의존하지 않으며, 열유속에는 다소 의존하는 것으로 나타났다. 또한 측정된 열전달계수는 매크로스케일에서 제안된 몇몇 상관식들과 비교하였으며, 기존의 상관식들은 본 연구의 실험 조건에서 얻어진 유동 비등 열전달계수를 높게 예측하였다
Abstract
An experimental study was carried out to measure the heat transfer coefficient in flow boiling to deionized water in a microchannel having a hydraulic diameter of 500㎛ . Tests were performed in the ranges of heat fluxes from 100 to 400 kW/㎡, vapor qualities from 0 to 0.2 and mass fluxes of 200, 400and 600 kg/m2s. From the experimental results, it is found that the measured heat transfer coefficients is independent of mass flux and quality, and is somewhat dependent of heat flux. Measured data of heat transfer are compared to a few available correlations proposed for macroscale. The previous correlations for macroscale overpredicted the flow boiling heat transfer coefficient for the test conditions considered in this work.
참고문헌 (24)
- J. Dirker, "Embedded solid state heat extraction in integrated power electronic modules", IEEE Trans. Power Electron, 20(3), pp.694~703 (2005)
- E.W. Kreutz, "Simulation of micro-channel heat sinks for optoelectronic", Microsyst. Microelectron. J, 31, pp.787~790 (2000)
- A.G. Fedorov, "Three-dimensional conjugate heat transfer in the microchannel heat sink for electronic packaging", Int. J. Heat Mass Transfer, 43, pp.399–15~ (2000)
- W. Qu, "Analysis of three-dimensional heat transfer in microchannel heat sinks", Int. J. Heat Mass Transfer, 45, pp.3973~3982 (2002)
- C.Y. Zhao, "Analysis of microchannel heat sinks for electronics cooling", Int. J. Heat Mass Transfer, 45, pp.4857~4869 (2002)
- C.Y. Soong, "Theoretical analysis of electrokinetic flow and heat transfer in a microchannel under asymmetric boundary conditions", Colloid Interface Sci, 265, pp.202~213 (2003)
- X.F. Peng, "Forced convection and flow boiling heat transfer for liquid flowing through microchannels", Int. J. Heat Mass Transfer, 36(14), pp.3421~3427 (1993)
- S.G.Kandlikar, "Fundamental issues related to flow boiling in minichannels and microchannels", Exp. Therm. Fluid Sci, 26, pp.389~407 (2002)
- M.W. Wambsganss, "Boiling heat transfer in a horizontal small-diameter tube", J. Heat Transfer Trans. ASME, 115(4), pp.963~972 (1993)
- Thome,J.R, "Boiling in microchannels:a review of experiment and theory", Int. J. Heat and Fluid Flow, 25, pp.128~139 (2004)
- G. Hetsroni, "Fluid flow in microchannels", Int. J. Heat Mass Transfer, 48(10), pp.982~1998 (2005)
- T.N. Tran, "Small circular-and rectangular channel boiling with two refrigerants", Int. J. Multiphase Flow, 22(3), pp.485~498 (1996)
- Liu, D, "Flow boiling in a microchannel heat sink", Proceedings of ASME International Mechanical Engineering Congress and Exposition, pp.5~11 (2005)
- B.X. Wang, "Experimental investigation on liquid forced convection heat transfer through microchannels", International Journal of Heat and Mass Transfer, 37(suppl 1), pp.73~82 (1994)
- X.F. Peng, "Frictional flow characteristics of water flowing through rectangular micro-channels", Experimental Heat Transfer, 7, pp.249~264 (1994)
- X.F. Peng, "Heat transfer characteristics of water flowing through micro-channels", Experimental Heat Transfer, 7, pp.265~283 (1994)
- X.F. Peng, "Forced convection heat transfer of single-phase binary mixtures through microchannels", Experimental Thermal and Fluid Science, 12, pp.98~112 (1996)
- P.S. Lee, "Investigation of heat transfer in rectangular microchannels", International Journal of Heat and Mass Transfer, 48, pp.1688~1704 (2005)
- Y. Mishan, "Effect of developing flow and thermal regime on momentum and heat transfer in micro-scale heat sink", International Journal of Heat and Mass Transfer, 50, pp.3100~3114 (2007)
- W. Qu, "Experimental and numerical study of pressure drop and heat transfer in a single-phase micro-channel heat sink", Int. J. Heat Mass Transfer, 45, pp.2549~2565 (2002)
- Liu, D, "Prediction of the onset of nucleate boiling in microchannel flow", International Journal of Heat and Mass Transfer, 48, pp.5134~5149 (2005)
- Wang, G, "Unstable and stable flow boiling in parallel microchannels and in a single microchannel", International Journal of Heat and Mass Transfer, 50, pp.4297~4310 (2007)
- S.G. Kandlikar, "Evolution of microchannel flow passages thermo-hydraulic performance and fabrication technology", Heat Transfer Eng, 24(1), pp.3~17 (2003)
- A.E.Bergles, "Boiling and evaporation in small diameter channels", Heat Transfer Engineering Microchannels-Short History and Bright Future, 24(1), pp.18~40 (2003)