计算集群、热回收系统和用于冷生产的吸附式制冷机的系统集成.pdf

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1、Rmi BOUZELSystem integration of a computingcluster,a heat recovery system andan adsorption chiller for cold productionReusing IT waste heat:a global overviewCold production:concept and experimentSummaryrunning on OCP hardwarereusing the IT waste heatQarnot is a european HPC cloud providerQarnot heat

2、 reuse racksScopeDC:5MWHeating system:5MWDuration:a yearFrench electricity carbon intensity factorReusing IT waste heat is impactfulScenario#1Regular DCPUE=1,6ERE=1,6Scenario#2Reusing heat DCPUE=1,05ERE=0,10Carbon savingsCarbon footprint for each scenario(TCO2eq)How to go further than reusing waste

3、heat?Classical use case:heatGreenhousesFish farmsDesalinationSwimming poolsHeat district networksHow to go further than reusing waste heat?GreenhousesFish farmsDesalinationCold productionSwimming poolsNew use case:coldHeat district networksAdsorption chillerAn adsorption chiller is a thermally drive

4、n cooling technologyThermally driven instead of mechanically driven like in classical chillerswith compressorsThe heat source can be as low as 65CFocus on silica gel/water pairAdsorption chiller-EvaporatorAt low pressure,the water evaporates and absorbs heat from the chilled water circuit.But the va

5、por accumulates in the chamber and pressure increases15C Chilled waterLow pressureAdsorption chiller-Adsorption chamber AThe adsorbent“drinks”the vapor and maintains a low pressure within the evaporator.A cooling water circuit removes the excess heat produced by the adsorption process.25CCooling wat

6、er15C Chilled waterLow pressureAdsorption chiller-Adsorption chamber BThe vapor is released thanks to the hot water circuit.The pressure increases up to the condensation pressure25CCooling water65C Hot water15C Chilled waterLow pressureAdsorption chiller-Conde