基于气候的冷却策略优化助力数据中心可持续发展.pdf

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1、Bahareh Eslami,NVIDIARaha Kalantarpour,NVIDIAClimate-Based Optimization of Cooling Strategies for Sustainable Data CentersClimate-Based Optimization of Cooling Strategies for Sustainable Data CentersBahareh Eslami,NVIDIARaha Kalantarpour,NVIDIASUSTAINABILITYAir-Cooling and Liquid-Cooling in Data Cen

2、tersHeat Rejection SystemsFacility Water System DesignPUE and WUELand Footprint Absorption ChillerCall to ActionAgendaFrom Air to Liquid Cooling:-Shift from full air-cooled systems to high-efficiency liquid cooling technologies.Direct Liquid Cooling(DLC):-Delivers coolant directly to processors for

3、better heat removal.Growing Share of Liquid Cooling Load:-Liquid cooling supports a significant portion of total data center cooling demand.Higher Operating Temperatures:-Enables higher CHW set points,increasing free cooling hours and efficiency.Sustainability Scope:-Lower PUE=improved energy effici

4、ency reduced Scope 2 carbon emissions.-Lower WUE-Waste heat recovery for absorption chillerLiquid Cooling Evolution Limited to ambient wet bulb temperatureHigh water usage Large capacityHeat Rejection SystemsDry Cooler(DC)Energy Consumption Adiabatic Cooler(AC)Cooling Tower(CT)Water-Cooled Chiller(W

5、CC)Air-Cooled Chiller(ACC)Limited to ambient dry bulb temperature No water usage Limited capacity Limited to ambient dry/wet bulb temperatureLow water usage Limited capacity Not limited to ambient temperature No water usage Large capacity Not limited to ambient temperature No water usage Limited cap

6、acityWater Consumption o The exact power consumption depends on unit capacity and FWS setpoint.o Water-cooled chiller considered independently(not combined with cooling tower/dry cooler).Facility Water System DesignsCDUCRAHCDUCRAHCDUCRAHCDUCRAHCDUCRAHCDUCRAHShared Heat Rejection System Liquid Coolin