微槽平板式热管散热器散热性能的实验和数值模拟
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摘要
采用计算流体力学方法对一种微槽平板热管散热器的翅片结构和尺寸进行优化设计,并对散热器的散热性能进行实验和数值模拟研究,平板热管散热器传热性能的数值计算和实验结果吻合良好。使用高度为50mm、间距为6. 5mm的错位开缝翅片能极大增强该平板热管散热器的散热能力。与纯铝合金散热器相比,使用平板热管作为散热器基底可使散热器的总热阻降低20. 6%。
The experimental and numerical investigation on the thermal performance of a flat heat pipe radiator with micro-grooves wick was conducted. The CFD method was employed to optimize the fins structure and size. It is found that simulation results of thermal performance agree well with experimental data. The heat dissipation potential of the flat heat pipe radiator is improved greatly by the misplace slot fins at spacing of 6. 5mm and height of 50 mm. The total thermal resistance of the heat radiator by the base of a flat heat pipe is reduced by 20. 6% compared with the aluminum alloy heat radiator.
The experimental and numerical investigation on the thermal performance of a flat heat pipe radiator with micro-grooves wick was conducted. The CFD method was employed to optimize the fins structure and size. It is found that simulation results of thermal performance agree well with experimental data. The heat dissipation potential of the flat heat pipe radiator is improved greatly by the misplace slot fins at spacing of 6. 5mm and height of 50 mm. The total thermal resistance of the heat radiator by the base of a flat heat pipe is reduced by 20. 6% compared with the aluminum alloy heat radiator.
引文
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[2]杨旸,魏昕,谢小柱,等.复合沟槽平板热管的理论建模与实验研究[J].低温与超导,2018,46(2):56-60.
[3]夏侯国伟,谢明付,孔方明,等.基于空调能量回收的平板热管传热性能[J].中南大学学报(自然科学版),2015,46(1):317-323.
[4]Moon S H,Park Y W,Rhi S H. The carbon wire bundle’s constructing as a capillary wick in the flat thin heat pipe[J]. Applied Thermal Engineering,2017,126:1177-1184.
[5]刘一兵.一种微矩形槽平板热管的数值模拟和有限元热分析[J].低温工程,2010(3):35-38.
[6]Wu Q,Xu R,Wang R,et al. Effect of C60 nanofluid on the thermal performance of a flat-plate pulsating heat pipe[J]. International Journal of Heat&Mass Transfer,2016,100:892-898.
[7]Kim H J,Lee S H,Kim S B,et al. The effect of nanoparticle shape on the thermal resistance of a flat-plate heat pipe using acetone-based Al2O3,nanofluids[J].International Journal of Heat and Mass Transfer,2016,92:572-577.
[8]王晨,刘中良,张广孟,等.新型微槽道平板热管的实验研究[J].工程热物理学报,2013,34(4):698-701.
[9] Stubblebine M J. Passivation and performance of inorganic aqueous solutions in a grooved aluminum flat heat pipe[J]. Journal of Heat Transfer, 2015, 137(5):052901.
[10]Wang L L,Chen Z J,Meng H. Numerical study of conjugate heat transfer of cryogenic methane in rectangular engine cooling channels at supercritical pressures[J]. Applied Thermal Engineering,2013,54:237-246.