直流可持续性：用于光网络设备的液体冷却.pdf

1、OCP Global Summit October 18,2023|San Jose,CALiquid Cooling for Optical Networking EquipmentConversion of Optical Transport and Routing Platforms from Air-Cooled to Hybrid Liquid/Air-CooledPeter Ajersch,Behzad Mohajer,Michael Bishop,Simon Shearman,Peter Saturley,Marko NicoliciAgendaHybrid Liquid/Air

2、 CoolingKey AdvantagesCompared to air-cooled,hybrid-cooling enables:70%reduction in facility cooling power 60%to 80%reduction in fan power 12-15dBA reduction in fan acoustic noise The ability to use higher power ASICs(800W)and higher power pluggable optical modules(25W)Hybrid-Cooled Optical Transpor

3、t ModuleHybrid-Cooled Router ModuleFacility Cooling PowerNetwork Element PowerAir-cooled NEHybrid liquid/air-cooled NEsavings:70%NE powerfacilities water supplye.g.ASHRAE W4(45C)Cooling Distribution Unit(CDU)System heat is picked up by the coolant,which circulates in a closed loop,and is pumped by t

4、he Coolant Distribution Unit(CDU)The heat exchanger in the CDU dumps the heat into the Facilities Water Supply(FWS)The temperature of the FWS is regulated by the facilities cooling system;e.g.a rooftop chillersecondary sidecoolant(PG-25)Rear view of router chassisRooftop ChillerrackmanifoldFluid Net

5、workFacility and Chassis ScaleFluid NetworkChassis and Module Scale Front perspective of router chassis 2 of 13 servers shown Coolant network“skeleton”:manifolds,hoses,cold plates,etc.All other hardware and mechanicals are hiddenRack manifold,supplyRack manifold,returnBlind-mateQuick Disconnect(QD)p

6、airRouter module cold plate harnessFluid NetworkModule and Cold-Plate ScaleSupport frameBlind-MateQuick Disconnect(QD)Pluggable optical module riding cold platePluggable optical module manifoldModule-level(mini)manifoldCold plate retention clip and springASIC cold plateConversion from Air-Cooled to