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1、MitsubishiHeavyIndustriesTechnicalReviewVol.47No.1(Mar.2010)19DevelopmentofKeyTechnologyforUltra-high-temperatureGasTurbinesEISAKUITO*1KEIZOTSUKAGOSHI*2AKIMASAMUYAMA*3JUNICHIROMASADA*4TAIJITORIGOE*5Gasturbinecombined-cyclepowergenerationisexpectedtoleadtoalon
2、g-termextensionofthegasturbinemarketbyprovidingtheworld’scleanestandmosteconomicalthermalpowerplantswithfossilfuelcoexistingwithnaturalenergyandnuclearpowergeneration.Thetechnologyrequiredfora1,700°C-classgasturbineisbeingdevelopedaspartofanationalprojecttopu
3、rsuehigherefficiency.State-of-the-arttechnologies,whosecontributionstowardimprovedefficiencyhavebeenverified,havealreadybeenappliedtothedevelopmentoftheworld’sfirst1,600°C-classJgasturbine.Thispaperdescribesthecurrentstatusofstate-of-the-artgasturbinetechnolo
4、gyaimingforitspracticalimplementation.
5、1.IntroductionGasturbinecombined-cycle(GTCC)powergenerationcontributestowardreducingfuelconsumptionandemissionsasitcanbeusedtobuildthecleanestpowerplantsthatconsumefossilfuels.Fromasocialandeconomicstandpoint,GTCCpowerge
6、nerationisexpectedtomeetthefollowingneeds:(1)Agrowinglong-termworldmarkethasbeenforecastforGTCCpowergeneration.(2)Indevelopingcountries,agreatdemandexistsforGTCCpowergeneration,whichcanbeproducedafterashortconstructionperiodandprovideastablesupplyofelectricit
7、ytodevelopelectricinfrastructure.(3)Indevelopedcountries,aneedexistsforhighlyefficientpowergenerationtoenhanceeconomicefficiencyandenvironmentaladaptation.(4)Itisincreasinglyimportanttoseekthesuperiorload-absorbingcapabilityofGTCCpowergenerationfromtheviewpoi
8、ntofcombiningitwithnaturalenergyandnuclearpowergeneration.MitsubishiHeavyIndustries(MHI),Ltd.,iscommittedtopursuingthetechnologicaldevelopmentofa1,700°C-classgasturbineaspartofanationalproject.Thispaperdescribesthetechnologiesappliedtonewlydeveloped1,600°C-cl
9、assJgasturbineanddiscusseshowtheymaybeusedforthe1,700°C-classgasturbineproject.
10、2.ComponentTechnologyofUltra-high-temperatureGasTurbinesInresponsetotheneedsofsocietydescribedabove,thedeve
