液冷系统中的侵蚀：探究速度相关的劣化机制.pdf

1、Christy Gonis,CoolIT SystemsErosion and Corrosion in Liquid Cooling Systems:Investigating Velocity-Dependent Degradation MechanismsErosion and Corrosion in Liquid Cooling Systems:Investigating Velocity-Dependent Degradation MechanismsChristy Gonis,Reza NajjariLIQUID COOLINGThe picture cant be displa

2、yed.The picture cant be displayed.I.Single-phase direct liquid cooling(DLC)systemsi.Regulations/standards of deployment:velocity limitationsII.Corrosion and erosion damage mechanismsIII.Experimental SetupIV.Preliminary TestingV.Next steps and call to actionOverviewThe picture cant be displayed.flow

3、rate=PerformanceWhere is the limit?DLC SystemsThe picture cant be displayed.Coldplates directly on heat sourcesFlow routing with various components/materialsConnection to SFNTo prevent flow related damage:Erosion and CorrosionRegulations and RecommendationsPublishing BodyRecommended flow limitations

4、OCP OAI System Liquid Cooling(Chen et al,2023)Coolant flow to coldplate:1 to 2 L/minThe Copper Development Association(CDA,2006)Cold water:1.5 to 2.4 m/sHot Water(60C)0.6 to 0.9 m/sFoundation of Water Research(Oliphant et al.,2017)Cold water:2 m/sHot water:0.5 m/sThe picture cant be displayed.Corros

5、ion:Electrochemical process Erosion:Mechanical processFluid or fluid+particles impinging on surfaceshigh Wall Shear Stress=Accelerated damage!Both together=Erosion-Corrosion=Accelerated damage!Mechanisms of DegradationThe picture cant be displayed.The picture cant be displayed.The picture cant be di

6、splayed.Image from:Stack et al.(1995).Mechanisms of DegradationDamage accelerates rapidly when erosion contributes“Critical Damage Phenomenon”Occur at the“Critical Flow Velocity”Exact velocity is dependent on the system in questionHigh velocity=high wall shear stressCritical Wall Shear StressThe pic