anicRankineCycleSystemsVincentLemortThermodynamicsLaboratory,UniversityofLiège,BelgiumAlecturegivenatthe BeijingKeyLaboratoryofNewEnergyandRenewableEnergyNorthChinaElectricPowerUniversity anicRankinecycle?ORCversussteamcyclesApplicationsofORCsSelectionoftheworkingfluidSelectionoftheexpansionmachineExperimentalmethodsModelingfeaturesConclusionsandperspectivesIntroduction anicRankinecycle?anicRankinecycle(ORC):(R123,R245fa)orhydrocarbons(pentane,...)MainadvantageofORC: anicRankineCycle(ORC):Smallscale,lowertemperatureApplicationfields:Wasteheatrecovery,Solarsources,engineexhaustgases,biomassCHP,geothermy,...SelectionoftheworkingfluidandoptimizationoftheworkingconditionsarekeyissuesTheselectionoftheexpansionmachinedependsontheselectionoftheworkingfluid(andthesizeoftheinstalledpower)binedheatandpowerWasteheatrecoveryCycleoptimizationSelectionoftheworkingfluidSelectionoftheexpansionmachineExperimentalmethodsModelingfeaturesConclusionsandperspectivesApplicationsofORCs generalitiesCoolingcircuitHeatsource:biomass,wasteheatrecovery,solarenergyCHPorcoolingtower,dry-coolerThermaloil/pressurizedwater/hotgasApplicationsofORCs ORCvssteamcyclesORCsystems:moreeconomicallyprofitablethansteamcyclesforinstalledpowerlowerthan3MWe(steamcyclerequirehighPandhighT)Heatsourcetemperaturerange:100°Cto450°CEasytoinstallmodule(onesquid,alreadyassembled)plexandlessexpensive,becauseHeatupto300°Cathermaloil(atlowpressure)Inthecaseofsteam,highpressure(60-70bar)andnecessitytosuperheat(450°C)Lowerworkingfluidoperatingpressure(<20bar)Pressurehigherthanambientpressure(noinfiltration)Dryfluids=>nodamagethreatfortheturbineFor1MWeandhightemperature,η>20%ApplicationsofORCs ORCvssteamcyclesLowerboilerefficiencybecausehighoilreturnt°(300°Cvs100°Cforfeedwaterinasteamplant)=>fluegasleaveathighert°ArchitectureofthesystemismodifiedApplicationsofORCs Sola
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