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600MW直接空冷机组DEH应用.docx

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600MW直接空冷机组DEH应用 Introduction: Inrecentyears,therehasbeenasignificantissuewiththetemperaturecontrolofpowerplants.Conventionalmethodsofcoolinginvolvetheuseoflargequantitiesofwatertoreducetemperatures,however,withincreasingenvironmentalconcerns,ithasbecomenecessarytoseekalternatesolutionstothisproblem.OneofthesolutionsistouseDirectAirCooledCondensers(DACC)andDirectEvaporativeCoolers(DEC)asareplacementforthetraditionalcoolingmethod.Inthispaper,wewillexploretheapplicationofDirectEvaporativeCooling(DEC)technologytothe600MWDirectAir-Cooled(DAC)powerplant. Background: DirectAir-Cooled(DAC)powerplantshavebecomeanincreasinglypopularmethodofpowergeneration.Theseplantsuseairasacoolant,allowingthemtobelocatedinareaswherewaterisscarce,andreducingtheoverallenvironmentalimpact.Despitetheirbenefits,thesepowerplantsstillfacethechallengeofcontrollingtheirtemperatureduringthesummermonths.DACsarepronetooverheating,whichcandamagethegenerators,turbinesandothercomponents.Inaddition,hightemperaturescancausetheefficiencyoftheDACtodecrease,leadingtoareductioninpoweroutput.Toaddresstheseissues,DACplantsneedeffectivecoolingsystems. DirectEvaporativeCooling(DEC): DirectEvaporativeCooling(DEC)isatechnologythathasbeenusedtocoolbuildingsformanyyears.Itinvolvesusingwatertoevaporateheatfromtheair,therebyreducingitstemperature.DECtechnologyhasbeenappliedinvariousindustries,includingpowerplantcooling.InaDACpowerplant,DECtechnologyisusedtocoolthehotairthatexitsthecondenser.Theairiscooledbybeingpassedthroughwater-soakedpads,whichincreasesthehumidityandreducesthetemperature.Thecooledairisthenreturnedtothecondenser,whereitcanabsorbmoreheat. ApplicationofDirectEvaporativeCoolingin600MWDirectAir-CooledPowerPlant: Ina600MWDirectAir-Cooled(DAC)powerplant,theDirectEvaporativeCooling(DEC)systemcanbeusedtocooltheairthatisdrawnintothecoolingtower.Thisairisthenusedtocoolthecondenserandotherpowerplantcomponents.TheDECsystemusesaseriesofnozzles,whichsprayafinemistofwaterintotheairasitentersthecoolingtower.Thewateris