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1、Challenges and OpportunitiesIntegrating Power Delivery in Immersion TanksOriol Chavanel,Ecosystem Enablement Tech.LeadKevin Gero,Senior Product Marketing ManagerCE-Immersion-Power Distribution in ImmersionPOWER AND COOLINGCOOLING ENV1.Datacenter Efficiency/GrowthData Centers are getting more power-d

2、ense;bigger,hotter,more expensive Some estimates say IT could consume 20%of the global electricityTraditional building&cooling technologies cant keep up with this growth&rising chip densitiesSources:https:/ Increase impacting both ESG and Thermal limitations today at Datacenters.2.CPU,GPU,Memory Inc

3、reased TDPData Centers are getting more power-dense;bigger,hotter,more expensive Some estimates say IT could consume 20%of the global electricityTraditional building&cooling technologies cant keep up with this growth&rising chip densitiesPower delivery required for high-density components will incre

4、ase exponentially according to AI and other tech.3.Air Current LimitationsImmersion as a driver to cope with all the components on the DC industry with increasing power source needs.sourcesource:ASHRAE(American Society of Heating,Refrigerating and Air-Conditioning Engineers)paper on the emergence an

5、d expansion of liquid cooling in mainstream data centershttps:/www.ashrae.org/file%20library/technical%20resources/bookstore/emergence-and-expansion-of-liquid-cooling-in-mainstream-data-centers_wp.pdf 4.Integrating Power in Immersion Immersion to be an end-to-end solution to solve the increasing tem

6、peratures of IT components such as CPU,GPU,Memory,DiskWhile at the same time for Power Elements such as PSU,Connectors,Busbars5.Power Advancements1.Power-Shelf Design and DensitiesPowershelf+50kW and upraising2.Busbar Design and DensitiesAir Design minimally improved useful for immersion long-life t

7、erms3.Connector Designs and DensitiesAir Design minimally improved useful for immersion long-life terms4.Material CompatibilitiesCable Jackets and other Rubbers5.Voltage Increase benefits48V vs 54V5.Power Advancements1.Powershelf 54kW DesignThe AC Inputs come into the 3 Green 7 pin connectors on the

8、 right.The connection is above the fluid to keep the connector and cable out of the fluid.This makes the AC whips user assessable This keeps the AC cord out of the fluidEliminates capillarity actionsThe AC Whips bring the AC input into the power supplies with a single phase going to each power suppl

9、yThe power supplies are in groups of 3 to keep the input currents balanced.All 15 outputs are in parallel,and each output is forced to have the same output voltage,therefore,they have the same output current and thus the same input current.5.Power Advancements1.Powershelf 54kW TestingPSU Components(

10、Max Temps in Air allowed at Max Performance):-D112 150C-Q1307 175C-D108 150C-Q307 175C-Q23 175C-C130 105C-C20 105C-D111 175C-L1201 130C-D110 175C-Q106 150C-Q2300 150C-Q102 150C-Q103 150C-L1001 130C-Q2301 150C-Q101 150C5.Power Advancements1.Powershelf 54kW TestingLine 1 Max kW Output:18kWLine 2 Max k

11、W Output:18kWLine 3 Max kW Output:18kWTotal kW Output:54kWPSU Max Output:3,6kW(Balanced)PSU Max Output:51V5.Power Advancements2.Busbar DesignThe“vents”placed at the laterals help with the fluid in/out flow.This is an air-design busbar which indirectly improves the adoption for immersion.5.Power Adva

12、ncements2.Busbar TestingORv3 19OU Busbar 54kW LoadImmersion 35C Fluid Ambient Temp1000A Load(50kW)only increases 4,8C over fluid ambient 5.Power Advancements2.Busbar Roadmap(AIR/LIQUID)?METAs HPR(High-Power Rack)Scalability Path?Depth increased by 125mm,weight increased by 65kgIncreased busbar to ra

13、ck mounting robustnessFrame ballasts to offset increased busbar&extension frame5.Power Advancements3.ORv3 Connectors Testing(POWERSHELF)Basic Air Connector Cable Material Compatibility only has to be considered5.Power Advancements3.ORv3 Connectors Design(SERVER)Basic Air Connector Cable Material Com

14、patibility only has to be considered5.Power Advancements4.Material Compatibilities(Metals and Rubbers)Initial material compatibility studies showed XLPE and Silicone rubber incompatible with hydrocarbon and fluorocarbon-based dielectric liquid Alternate cable insulation materials PUR and SJOOW,ident

15、ified and tested.Soak test(85 C,21 days,ASTM D3455)was performed with Hydrocarbon based liquid A*OCP Test Standard(80 C,14 days)was carried out with the Hydrocarbon-based dielectric liquids(Liquid B&Liquid C)5.Power Advancements4.Material Compatibilities(Power Cables)Tests show minimal interaction b

16、etween the cable insulation materials and liquid Neither of the samples leached appreciable amounts of any component Both the samples were slightly stiffer after aging For PUR cable,the percentage change observed in the hardness is 22%.However,the hardness changed from 22 to 27 in terms of shore D H

17、ardness value For SJOOWcable,there was no change observed in the hardness before and after the test5.Power Advancements5.Voltage Increase benefitsThe Benefit of Voltage Increase from 51V to 54V at 50kW.This allows more current through the connectors and in the busbar at the same thermal limit.Call t

18、o Action How to get involved in the Project/Sub-Project Community Please follow us at Groups.io Workstream Group Groups.io-You can visit your group,start reading messages and posting them here-https:/OCP-All.groups.io/g/CE-Immersion-Power-Distribution The email address for this group is:CE-Immersion

19、-Power-Distribution+subscribeOCP-All.groups.io or send a mail to or Where to find additional information(URL links):Project Wiki with latest specification:https:/www.opencompute.org/wiki/Cooling_Environments/Immersion RelatedProducts:https:/www.opencompute.org/solutions/43/flexible-immersion-cooling-for-hyperconverged-solutions RequirementsDocument:https:/ you!