Bio-based fluids for European AI data centres.pdf

1、Bio-based fluids for European AI data centresDavid GYULNAZARYAN Impleon,Executive ConsultantMassimiliano DallArmellina Frigel,Global Sales Development ManagerCOOLING ENVIRONMENTS&LIQUID COOLINGTraditional Air Heat Transfer DesignDry coolerChillerAir coolerEth.glycolWaterTraditional 2-loops design35-

2、45C20-30CTraditional Liquid Heat Transfer DesignDry coolerChillerCDUCold plateEth.glycolWaterPG25Traditional 3-loops design35-45C35-45C25-35CTraditional Liquid Heat Transfer DesignDry coolerChillerCDUCold plateEth.glycolWaterPG25Traditional 3-loops design35-45C35-45C25-35CTraditional&Next Gen Liquid

3、 Heat Transfer DesignDry coolerChillerCDUCold plateEth.glycolWaterBio PDO25Traditional 3-loops designNext Gen single loop design 35-45CCold plateDry cooler35-45C35-45C25-35CPG25Major requirements for single loopNext Gen single loop design 35-45CCold plateDry coolerRack level flow controlUltra-purity

4、Outdoor conditionsPiping for clean flowFiltration 50 microns Fluid low viscosityIn cold seasonPICV valvesIndividual pumpsFlexibile flow rateAnti freezing propertiesBio PDO25DC heat transfer fluid requirementsIndustry Standards Groups,ASHRAE,OCP,ASTM:viscositythermal stabilityfreezing pointfoamingemb

5、edded carbonconductivitycorrosion inhibitorsource:Turbidity and Electrical Conductivity Measurements to Determine PG25 Fluid Quality,Lauren Huffman,Dow Inc.&Guide lines for using PG25 heat transfer fluidSingle loop heat transfer fluid requirementsViscosity at low ambient air temperatureBiostatic to

6、prevent bacteria growthThermal stability for heat reusePurity,50 micron filtrationAnticorrosion,Compatibility with different materialsFoaming,To guarantee system performanceEmbodied carbon,to meet sustuinability goalsHeat rejection to the ambient airNext Gen single loop design 35-45CCold plateDry co