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1、th17IAHRInternationalConferenceonCoolingTowerandHeatExchanger,8-11September2015,GoldCoast,Queensland,AustraliaNumericalsimulationofinfluenceofarrangementoffluegasdischargedevicesonperformancesofindirectaircoolingtower111Lu-JunLI,Shun-AnZHAO,Xiao-JunSONG1ChinaInstitute
2、ofWaterResourcesandHydropowerResearch,Beijing,ChinaKeywords:coolingtowerwiththeflueinjectiondevice;indirectaircoolingtower,thermalandresistanceperformance;massflowrate.ABSTRACT:Inthispaper,accordingtotheindirectcoolingtowersofone2×660MWpowerplant,the3-Dnumericalsimula
3、tionmodelswerebuiltbyusingoftheFLUENTsoftware.Thearrangementtypesofthefluegasdischargedevicesincludingthehorizontalarrangementtypesandtheverticalarrangementtype.Theflowfieldsinthecoolingtowerwerestudiedandthethermalandresistanceperformanceswereanalyzed.Theresearchresu
4、ltswereasfollows:(a)iftheenvironmentwindwasnotconsidered,thearrangementtypeshadlittleinfluenceonthethermalandresistanceperformancesoftheindirectaircoolingtower;(b)iftheenvironmentwindwasconsidered,thehorizontalarrangementtypeplayedtheroleofthecross-wall,andinducedthem
5、assflowincreasecomparedwiththecasewithoutthefluegasdischargedevices.ThispaperwassupportedbytheprogramofyoungtechnologyplanofIWHR(HY0145B162014)1BackgroundInthe1970s,theemissionstandardofairpollutanthadbeenissuedinsomecountries.Becausethedischargeofthesulfurdioxidewass
6、trictlylimited,thefluegasdischargedeviceswereusedinpowerplantincreasingly.Thewetdesulphurizationsystemwasusedwidely,whichwasoneofthefluegasdesulfurizationdevices.Aftertheprocessofthewetdesulfurization,thetemperatureoftheinjectedgaswasabout50EͦC.Itwasdifficulttodischar
7、getheinjectedgasbythechimneydirectly.Generally,theinjectedgaswasheatedagainbeforeitwasdischargedbythechimney,whichwouldincreasethecost.Withthetechnologyofthecoolingtowerwiththefluegasdischargedevices,thefluegaswasdischargedintotheatmospherebythelargecoolingtower.Becau
8、sethetechnologyofthecoolingtowerwiththefluegasdischargedevicesusedofthekineticenergyoftheabundantheatedairinthecoolingtower,
