The_IAPWS_Industrial_Formulation_1997_for_the_Thermodynamic_Properties_of_Water_and_Steam..pdf

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1、1W.Wagner2J.R.Cooper3A.Dittmann4TheIAPWSIndustrialJ.Kijima5Formulation1997fortheH.-J.KretzschmarThermodynamicPropertiesof6A.KruseWaterandSteam7R.MaresÏIn1997,theInternationalAssociationforthePropertiesofWaterandSteam(IAPWS)adoptedanewformulationforthethermodynamicproperti

2、esofwaterandsteamfor4K.Oguchiindustrialuse.Thisnewformulation,calledIAPWSIndustrialFormulation1997fortheThermodynamicPropertiesofWaterandSteam(IAPWS-IF97),replacesthepreviousindustrialformulation,IFC-67,thathadformedthebasisforpower-plantcalculations8H.Satoandotherapplica

3、tionsinenergyengineeringsincethelate1960's.IAPWS-IF97improvessigni®cantlyboththeaccuracyandthespeedofthecalculationofthethermodynamicpropertiescomparedwithIFC-67.ThedifferencesbetweenIAPWS-IF97andIFC-67will5I.StoÈckerrequiremanyusers,particularlyboilerandturbinemanufactur

4、ers,tomodifydesignandapplicationcodes.Thispapersummarizestheneedandtherequirementsforsuchanew9industrialformulationandgivestheentirenumericalinformationabouttheindividualO.SÏifnerequationsofIAPWS-IF97.Moreover,thescienti®cbasisforthedevelopmentoftheequationsissummarizedan

5、dtheachievedqualityofIAPWS-IF97ispresentedregarding4thethreecriterionsaccuracy,consistencyalongregionboundaries,andcomputationY.Takaishispeed.Forcomparison,correspondingresultsforthepreviousstandardIFC-67arealsopresented.4I.Tanishita3J.TruÈbenbach3Th.Willkommen1Introducti

6、onwasusedforinnumerableotherindustrialapplications.However,comparedwithtoday'srequirementsIFC-67containsanumberofInthe1960sanindustrialformulationforthethermodynamicweaknesses.Moreover,becauseoftheprogressthathasbeenpropertiesofwaterandsteamwasdeveloped.ThiswascalledªThea

7、chievedinmathematicalmethodstodevelopaccurateequations1967IFCFormulationforIndustrialUseº(IFC-67)[1].IFC-67ofstate,anumberofreasonswarrantedthedevelopmentofanewwasformallyrecognizedforthecalculationofthermodynamicindustrialformulation.propertiesofwaterandsteamforof®cialus

8、esuchasperformanceThisnewlydevelopedformulationwasadoptedbytheInterna-guaranteecalculationsofpow