《Immersion-Requirements.pdf》由会员分享,可在线阅读,更多相关《Immersion-Requirements.pdf(26页珍藏版)》请在三个皮匠报告上搜索。
1、Cooling Environments-ImmersionImmersion RequirementsCE-ImmersionRolf Brink,CEO PromersionNew co-lead:Rick Margerison,CTO Rosseau GroupImmersion RequirementsBackground:Generation and maintenance of qualifiable requirements and required disclosures for immersion technologiesMix of requirements and whi
2、tepaper content,outlining some best practicesVendors need to qualify against the requirements for any immersion related OCP logo or marketplace positioningGoal:Stimulating minimum quality aspects of immersion technologiesEnsuring accurate and factual technology positioningSupporting inevitable globa
3、l regulatory aspects to Immersion Cooling(UL,IEC,etc.)Immersion Requirements introductionEstablish common terminologyFacilitate immersion specific measures and with parameters of importanceCompliancy requirements for specifications and immersion solutionsEnsure quality solutions in the OCP domainEns
4、ure accurate and factual technology positioningWeed-out marketing vs engineering(OCP is engineering focused)PurposeOCP immersion related SPEC submissionOCP Logo accreditation for immersion related products/solutions(accepted/inspired)OCP immersion related brandingOCP immersion related marketplace po
5、sitioningOCP immersion related solution buildingQualification requiredWrap-up of Immersion Requirements Rev2 amendment 1Thermal loss to air definitionFinalizing new/revised fluid requirementsUpcoming focus on following topics:Flashpoint evaluation and recommendationsAuto-ignition IEC alignment and h
6、armonization team to be formedCurrent and upcoming activitiesCE-ImmersionContent and requirements explainedImmersion Requirements Rev2,Addendum 1Requirements format:SR 1.1-1:SR/OR/CR:Requirement type#.#:Paragraph number which contains the requirement-#:Requirement numberRequirement typesSR:Specifica
7、tion Requirements shall be met by the immersion solution vendor.OR:Optional Requirements may be met to enable recognition of special functionality of features.CR:Customer Requirements shall be met by owners,operators,or end users of the solution.Sufficient effort shall be made and demonstrated by th
8、e solution vendor to accommodate compliancy.CH 1:RequirementsExplanatory text on technology types and terminologyTCS or Technology Cooling SystemFWS or Facility Water SystemSingle vs Two-phaseEnclosed ChassisOpen BathHybridCH2:Technology definitionsRegulatory complianceUL,FCC,CE,etcSR 3.1-1 to 3.1-2
9、Mechanical safetyEmergency procedures,usability by skilled IT personnelElectrical safety(Horizontal busbars,electrical assemblies,grounding)Fluid/fumes/gas containmentSR 3.2-1 to SR 3.2-11CH3:Quality and Safety requirementsFacility side liquid managementVentilation,prevention of sewage discharge,dis
10、posal,containment,spill management,HSE practices and documentation,trainingCR 3.3-1 to 3.3-9Solution side liquid managementPressure release,volatile liquids compliancy,evaporative losses containmentSR 3.3-1 to 3.3-3CH3:Quality and Safety requirementsExtended and more meaningful fluid specification r
11、equirementsSR 4.1-1MSDS/TDS documentationReporting requirement onlyCH4:Immersion FluidsSpecification Test method(s)Format Dielectric strength,measured at 1 mm ASTM D 1816 kV/mm Dielectric Constant(Relative permittivity)Measured at:5 VAC 20 GHz and 40 GHz 20C and 70C There is no prescribed method at
12、this point.IEC 60247 may or may not provide a basis for this testing procedure.NB:The high temperature 70C test can be lowered in line with evaporation temperatures of 2-phase fluids#.#GHz and#C Loss tangent Data must be associated with tests conducted for Dielectric Constant with the referenced pro
13、perties#.#GHz and#C Volume resistivity ASTM D1169#.#Gm Volumetric expansion ASTM D 1903#.#/C Maximum moisture content for dielectric breakdown(100%Water saturation point)at 20C,30C,40C,50C,60C,70C ASTM D1533-20#ppm Density at 20C,30C,40C,50C,60C,70C ISO 12185#.#kg/m3 Specific heat at 20C,30C,40C,50C
14、,60C,70C ASTM E 1269#.#kJ/kg*K 40C Thermal conductivity at 20C,30C,40C,50C,60C,70C ASTM D 7896#.#W/m*K 40C Kinematic viscosity at 20C,30C,40C,50C,60C,70C ASTM D7042#.#mm2/s(cSt)Vapor Pressure at 20C,30C,40C,50C,60C,70C ASTM D2879(non-volatile fluids)ASTM D6378(boiling point 85C)#mbar Pour point ASTM
15、 D 97/ISO 3016#C Boiling point temperature at which 10%of mass has boiled(if below fire point OR decomposition point)ASTM D2887#.#C Flash point(Cleveland Closed Cup)ASTM D 93/ISO 2719#C Fire point ASTM D 92 /2592#C Auto ignition point DIN 51794/ASTM E659#C Sulphur content ISO 14596#,#ppm Acidity IEC
16、 62021-2/IEC 62021-1#.#mg KOH/g NSF Nonfood Compounds certification NSF certificate Yes/No Odor n/a TDS spec Color ASTM D 156/ISO 2211 SDSMSDS spec Hazard statements GHS Classification SDSMSDS spec STOT-single exposure Safety Data Sheet SDSMSDS spec STOT-repeated exposure Safety Data Sheet SDSMSDS s
17、pec Biodegradability OECD 301 Readily,Inherently or Persistent Oxidation Stability IEC 61125 Values per method Global warming potential(GWP)IPCC 2007#.#Ozone Depletion Potential PNNL-16813 Yes/No Latent heat of vaporization(2-phase only)ASTM E2071#J/kg Surface tension(2-phase only)ASTM D1331#.#N/m V
18、apor density(2-phase only)TBD#.#kg/m3 Dielectric strength:Abandoned estimation possibility,only measurements allowed.Changed Flashpoint from“CoC”to“Cleveland Closed Cup”(ASTM D 93/ISO 2719)Require unified specific temperatures requirements for Maximum moisture content,Specific heat,Thermal conductiv
19、ity,Density,Kinematic viscosity,and vapor pressureOnly kinematic viscosity required,provided calculation for dynamic viscosityAddition of Boiling point(if below fire point)Addition of Latent heat of vaporization(2-phase only)Addition of Surface tension(2-phase only)Addition of Gas phase density(2-ph
20、ase only)Various other minor correctionsUpdated required disclosures:Essential properties to maintainSR 4.2-1Updates:Flashpoint reference to“Cleveland Closed Cup”Auto ignition point increased to 300C as defined in IEC62368-1Other minor correctionsCH4:Fluids minimum requirementsProperty Unused fluid
21、minimum requirements Lifetime fluid minimum requirements Dielectric strength,measured at 1 mm-6 kV/mm Resistivity 2.00 Gm 0.20 Gm Flash point(Cleveland Closed Cup)150 C 150 C Auto ignition point 300 C 300 C Sulphur content 10 ppm-Acidity:hydrocarbons natural esters synthetic esters fluorocarbons 0.0
22、1 mg KOH/g 0.06 mg KOH/g 0.03 mg KOH/g 0.001 mg KOH/g-Odor(unsealed solutions only)Slight Slight Single phase fluidsSingle phase fluids limited to synthetic oils and esters,processed natural esters and fluorochemical fluids.Quality management requirementsSR 4.3-1 to 4.3-4CH4:Fluid quality management
23、Minimum requirementsAmended with optional classificationsStacked features enable higher classificationCH5:Feature classificationsHigh AvailabilityHigh SafetyThermal OptimizedMinimum requirementsMinimum requirementsDielectric In/output temperatures,overheat protection,pump status,redfish compliance.A
24、ddition of“dielectric fluid volume/content/level detection”and“Dielectric fluid/water leak detection”(previously optional High Safety)SR 5.1-1Thermal optimizedPower monitoring,FWS interface thermal monitoring,flowrate monitoring&control,controlled TCS variable pump.OR 5.2-1CH5:Feature classification
25、sHigh AvailabilityHigh SafetyThermal OptimizedMinimum requirementsHigh AvailabilityHigh SafetyThermal OptimizedMinimum requirementsHigh safetycompliance with“Thermal Optimized”Reporting&logging of all sensors,controls of shut-off valves,pump and electrical input,fault reporting,automated safety resp
26、onses and fault handling(moved volume and leak detection to Minimum)OR 5.3-1High availabilityCompliance with Thermal Optimized and High Safety Concurrent critical component maintainability without IT downtime,Dual power and selectivity,N+1 or 2N cooling capabilityOR 5.4-1CH5:Feature classificationsH
27、igh AvailabilityHigh SafetyThermal OptimizedMinimum requirementsHigh AvailabilityHigh SafetyThermal OptimizedMinimum requirementsMeasurement unitsSI units,mandatory metrics to report,required documentationsSR 6.1-1 to 6.3-1Solution specification items:Compute density,Solution density and Solution fo
28、otprintPower per volume of liquidStatic load for bare,full and IT solutionHeight clearanceNon-IT power data per kW IT and per m2Thermal losses,etcCH6:General standardsFixed value(Watt=J/sec)Proposed process definition:1.Shut-off cooling supply to prevent heat rejection to the designed liquid cooling
29、 circuit.2.Close lid or other human access features to simulate normal operating conditions.3.Ensure that the ambient(room)temperature is between 17 and 27C and the solution is in(relatively)still air environment.a.If significant airflow cannot be avoided,a means to shield the solution from direct a
30、irflow may be implemented to prevent unintended additional convection.(i.e.temporary walls or canvas shielding from direct airflow)b.Humidity and radiative heat transfer variations are deemed negligible and do not require additional considerations.4.Heat the fluid until the dielectric temperature re
31、aches ambient temperature+20C.a.2-phase solutions should maintain a maximum temperature of boiling point-8C.b.For 2-phase,care must be taken that wetted heat sources do not reach boiling point temperature or critical heat flux.5.Ensure measured electrical thermal input to maintain the average temper
32、ature of ambient+20C(+/-2C)for 24 hours(equilibrium).a.If ambient+20C cannot be achieved due to 2 phase boiling point limitations,a dT of at least 15C to ambient must be maintained as a minimum.6.Establish the average electrical load over the test period.The resulting value is to be used as the ther
33、mal loss value.CH6:Thermal Loss Factor updateSR 6.3-2 For any immersion technology,BIM files shall be submitted and made publicly available in accordance with the OCP Cooling Environments BIM specification for Advanced Cooling FacilitiesLightweight 3D product model to facilitate“concept to construct
34、ion”drawingsRevit RFA format500 kB max sizeConnections for piping,power and drain(if applicable)modelled in dimensionally accurate locations and sizesIncluding voltage,phase,kVA and load classification parametersCH6:BIM models updateInput/output differentiation,FWS compatibilityColour coding&flow di
35、rection indicators,material compatibility of components,pressures and coolant mixturesSR 7.1-1 to 7.2-2CR 7.2-1Extensive FWS descriptive information referring water quality,wetted materials,galvanic properties and DCIM.Updated Redfish chapter in line with current progress of Hardware Management for
36、Liquid CoolingCH7:Datacenter interfaceDescriptive content on following topics:Ride through(dielectric,partial dielectric and FWS)Thermal defsignCooling infrastructureOxidation and moistureIT compatibilityCH8:Immersion related uptime factorsSubmit request for qualification:Rolf.BJohn.BComplete Immers
37、ion Requirements Checklist(provided by PLs/download from wiki)Presentyour qualification to the community(Public)Why and how a solution qualifies against Immersion RequirementsVerifyyour qualification during an interactive peer review(Non-Public)One-off panel of volunteer experts,selected by PLs(auth
38、ors,reviewers,active community members)Overseen by Immersion PLsApprove,Decline or provisionally with follow-up itemsHow to qualify?Immersion wiki for detailed process Sign up for the community and workstream calls Contributeto the projects and workstreams Shareany insight in obstacles or hurdles you see Helpshape the future for Immersion Cooling!All information can be found in the Immersion Wiki https:/www.opencompute.org/wiki/Cooling_Environments/Immersion Get connected to the requirements workstream callsSupport Immersion RequirementsIMMERSION WIKISCAN TO JOIN RequirementsThank you!