微通道内单一/混合流体强化传热研究进展

A review of enhanced heat transfer of single/multiple fluids in microchannel heat sinks

介绍了近年来微通道换热器内冷却介质强化换热的研究进展。阐述了纳米流体、液态金属以及潜热型功能热流体强化传热的机理;探讨了影响纳米流体传热性能的因素,包括纳米颗粒的种类、体积分数和温度等;讨论了增大液态金属传热系数的方法;分析了微胶囊壁材、相变材料和微胶囊的质量分数等对潜热型功能热流体热容的影响。指出了3种冷却介质目前尚存在的缺陷及相应的改善措施,对高热流密度设备散热问题中冷却介质的选取具有一定的指导意义。

The present study presents the recent research progress on enhanced heat transfer in microchannel heat sinks for cooling media.It describes the mechanisms behind enhanced heat transfer using nanofluids,liquid metals,and latent heat functional fluids.Furthermore,it explores various factors that affect the heat transfer performance of nanofluids,such as nanoparticle types,volume fractions,and temperatures.Additionally,it discusses methods to increase the heat transfer coefficient of liquid metals and analyzes how wall materials of microcapsules,phase-change materials,and mass fractions of microcapsules influence the heat capacity of latent heat functional fluids.Moreover,this study highlights the limitations of these three cooling media and proposes corresponding improvement measures.These findings provide valuable guidance for selecting appropriate cooling media in high heat flux equipment.