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Service Oriented Immersion Cooling with 48V Power Solution
Lentis Pai, Director, Wiwynn
Advanced Cooling
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• In order to meet the demand of the fast-growing power consumption with energy saving
• Contribute the specifications and send a message to the ecosystem vendors to increase the interest to develop the commodities and components together for immersion cooling, such as redefine life/reliability, specific components…etc
Purpose
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Existing Air Cooling Solution Immersion Cooling Solution Immersion Cooling Development Wiwynn 48V Immersion Cooling Solution Tank Management Investigation
Contents
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Rack Level Liquid Cooling
Existing Air Cooling SolutionsRequirement
Enhanced Volume Air Cooling
Water Assisted Air Cooling
Loop Heat Pipe &
Thermosiphon
Traditional Heat Sink
Cooling Capability
Cooling Airflow
ASIC
s Pow
er
Cold Water
Space
FanLower Ambient Temp.
Cold Water for ASICs
HeatsinkRadiator
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Rack Level Liquid Cooling
Existing Air Cooling Solutions
Enhanced Volume Air Cooling
Water Assisted Air Cooling
Loop Heat Pipe &
Thermosiphon
Traditional Heat Sink
Cooling Capability
ASIC
s Pow
er
Immersion Cooling Solution with 48V
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Low Airflow Requirement
Higher Ambient Temp.
Higher Density
Warm Water Cooling
Immersion Cooling
35oC
Energy SavingAir
PUE1.2~2 PUE
1.02~1.08
Immersion
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Design Goal
Seawolf Tank
Serviceability Efficiency
Safety Low LeakageSafety
Critical
Advanced Condenser
48V Power Delivery
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Immersion Cooling DevelopmentProve
Immersion CoolingOptimize Tank for
Immersion Cooling~2017 2019 2021~
POCTioga Pass
Q2, 2018 Q4, 2018
BenchmarkingOlympus
Q2, 2019
48V TankTioga Pass
60 kW
POC with Existing Board
High Power Tank for Existing Board
Tank withOptimized Board
Tank Next Gen
Q2 2020
White Papers Specifications
Q3, 2019 Q4, 2019
20202018
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Service Oriented Immersion Cooling with 48V Power Solution
Wiwynn Seawolf Tank
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48V Immersion Cooling SolutionA Service Oriented Immersion Cooling Tank with 48V Power Solution
Dimension 1200mm(L) x 1200mm(W) x 1250mm(H)
Cooling Capability 60kW
Server Quantity 100 Nodes
Mother Board OCP Server Board (Tioga Pass)
Power Input for Server 48 VDC by Bus Bar
Switch 4 Switches
Solution Features
Seawolf
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Cartridge Design
800
Upper Board
Lower Board
Top Cover
Bottom Cover
48V PTB
Bus Bar Clip
Two boards face to face in one cartridge < 1.5U No modification for MB
Cartridge
OCP MB
OCP MB
Handle
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Board and Switch Matrix
10 Cartridges * 5 Column100 Boards
4 Switches
Tank Top View
Front
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Power Solution
Power bus bar for power deliverySeparated power deliver by 5
branches for each cartridge column
Two 48V power shelves to support 60 kW
(Optional)
Rear Side
Cartridge
Bus Bar Clip
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Active Condenser
Secondary Condenser
Primary Condenser
Vapor Direction
Vapor Duct with Fan
Advanced Condenser
Trigger forced convection to direct vapor to contact the condenser during board maintenance
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Monitoring and SafetyTemperature Sensors
Fluid/Vapor/WaterMoisture SensorsDehumidification
Liquid Lever Sensor
Filter System & Pump
Pressure SensorBellows System
Power Shelf & Power Meter
MonitoringReportingWarningCriticalControl
Safety
Critical
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Tank ControllerTank Management
Water Valve
Relief Valve
Power Shelf
Active Condenser
Water Temperature
Liquid Temperature
System Power
Top Lid Detector
Tank Pressure
Top Lid Detector
Tank Pressure
Water Temperature
Liquid Temperature
Top Lid Detector
Tank Pressure Tank Pressure
Liquid Level
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Tank Management
Tank Management Board
Tank Controller
Redfish-based API Web-based GUI
Tank Cooling Control Power Management Node Management Interfaces
Goal:Compatible with OCP ProfilesFriendly to the Existing Data Center
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Tank Management
Tank Management
Touch Panel
Friendly User Interface
Wireless Remote Control
Monitoring ReportingWarning Critical Control
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Serviceability
Swipe the touch panel
Swipe the touch panel
Replace sever
Activate Condenser System
1 24 3
To open lid automatically Proprietary condenser system
Pull up to replace serverTo Close lid automatically
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48V Immersion Cooling Solution Two Phase Immersion Cooling for
Excellent PUE
High Efficiency DC 48V Power Delivery System
Advanced Condenser System for Low Vapor Leakage
Tool-less Design, Automation, and Friendly UI with Easy Serviceability
Tank Management for Safety
Leverage Large Scale Deployed and Field Proven OCP Server Board 100 Nodes
Boiling
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Design and Investigation
Tank Management Board
Cost Reduction
Optimized Server Board
Serviceability
Lower Emission Rate
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Tank SpecificationDensity
Compute density 42 kW/m2, 35°CSolution density 42 kW/m2, 35°CSolution footprint 21 kW/m2, 35°C
ASHRAE density (W3) 24 kW/m2, 32°C Density per fluorocarbon volume 120 kW/m3
ConstructionStatic load (Bare solution) 5,9 kN/m2
Static load (Full solution) 11,8 kN/m2
Static load (IT solution, Max) 14.8 kN/m2
Height clearance 2530 mmEfficiency
Non-IT power/kW 0 WNon-IT power overhead 70W
Thermal loss to air TBUTemperature delta (Min/max) TBU
Highest cooling temp 60°CIT
IT chassis type Immersion-optimizedMax chassis size 7.7”Chassis capacity 0.75 U
IT brand compatibility OCP/Wiwynn
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