Loop Heat Pipe for Modular Data Centers.pdf

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Loop Heat Pipe for Modular Data Centers.pdf

1、Passive Cold plate Cooling Liquid cooling Modular Data CenterSustainability:Cooling EnvironmentsPassive Liquid Cooling enables a low carbon 350kW Modular Data CentreKarl Rabe MDC Co-Lead,Wooden Data CentersDavid Gyulnazaryan Independent consulatant,ImpleonWhat is OCP?The Open Compute Project Foundat

2、ion is a non profit open source hardware community which since its formation in 2011 has been disrupting the 20th Century Data Century Industry www.opencompute.org Technology Contribution ProcessMember makes a contributionIncluding technical documents Reviewed by community Voted by incubation commit

3、tee Posted on opencompute.org Available to the public OCP Technology PrinciplesEfficiency-performance,cost,conversion&cooling Scale out-Tool-less design,OCP compliant management tools and documentation Openness-Open Source,Open Interface,OCP Compatible Impact-Efficiency gains,new technology,leverage

4、/empower prior contributions and enhance supply chain Modular Data Center Air cooled 90kW12 racks/250 serversIn-row DX coolingIn-row DX cooling4 kW140 kWCondenser243445 kW90 kWIn-rowAir for serversAmbient air-18+43In-row DX coolingCondenserIn-rowServersUPSTotalkW445905144Hours8760876087608760MWh3034

5、7788411206=Total energyIT energy=1206788=1.53Passive liquid cooled Modular Data CenterPassive liquid cooled OCP serversWhat is the server energy?CPU 35%CPU 35%Cooling Fans10%Storage5%Memory 10%Other5%What is the server energy?10%of server energy90%of server energyCPU 70%Memory 10%Storage 5%Other 5%I

6、s it possible to reduce the server energy?CPU 35%CPU 35%Cooling Fans10%Storage5%Memory 10%Other5%Fans power reduction of 70%Replacement of the heat sink with the interfaceFans power reduction of 70%10%of server energy3%of server energy(by reducing quantity or RPM)Twice as denseOCP Leopard serversOCP

7、 Leopard servers with LHPTwice as denseOpen Rack V2(45 servers)Open Rack V2 with passive liquid cooling(84 servers)12 racks/1000 servers(Air 250 servers)Cool aisle temperature with air and liquid cooled CPU4 flexible heat reuse schemeswith water cooled chillerwith air cooled chillerwith adiabatic co

8、oler(2 circuits)with adiabatic cooler(1 circuit)27581 kWAir cooler304285 kW13 kWAir for serversAmbient air-18+43Rear Rack Liquid Manifolds35Passive liquid cooling335 kW250 kWAdiabatic coolerPumpsAir coolerServersUPSTotalkW134133517369Hours87608760876087608760MWh3234629351493 155Passive liquid coolin

9、g=Total energyIT energy=3 1552 935=1.08TCO ComparisonAirPassive LiquidSavings,%Servers10001000-Racks4812-75%IT-load360 kW335 kW-7%Total power576 kW369 kW-36%Cooling energy1508 MWh72 MWh-95%Total energy4836 MWh3155 MWh-35%TCO,k/3 years3682k2497k-34%Loop Heat Pipes(LHP)based Passive Liquid Cooling sys

10、temPassive liquid cooling systemNo moving parts,valves or pumpsNo energy or water spendingDirect-to-chip cold plate coolingSimple installation/removalHigh efficiency:up to 1kW chipsMaximum tolerance to:Gravity field and distanceMultiple bending for any server topologyNo risk of leakage of any kindCa

11、pillary structure+negative internal pressureNo maintenance needed.Up to 20-year lifetime.26Runs as Dry Cooler as long as possibleWhen needed,air is cooled in the closed adiabatic chamber before reaching the heat exchanger coilClosed loop cooling system with moisture absorbent material honeycomb inte

12、riorReduces water consumption and energy useHighly adaptable to different applications/climatesHow does it work?No risk of Legionella Series of whitepapers planned for MDCs Define and increase awareness around MDCs Establish OCP specifications for MDC solutions Drive open solutions in MDC applications Participate in regular Sub-Project meetings Contact leadership regarding your desire to contributeCall to Action How Can You Help?Open Discussion

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