【英文标准名称】:Safetyinelectroheatinstallations-Part11:particularrequirementsforinstallationsusingtheeffectofelectromagneticforcesonliquidmetals.
【原文标准名称】:电热装置的安全性.第11部分:用电磁影响液体金属的装置用特殊要求
【标准号】:NFC79-641-2007
【标准状态】:现行
【国别】:法国
【发布日期】:2007-11-01
【实施或试行日期】:2007-11-10
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:搅拌;电容器;铸塑;铸造工具;接触安全装置;电气工程;电气安全;电加热装置;电磁的;电磁装置;电磁感应;电子枪;设备安全;变频机;倍频器;加热装置;感应;电感器;工业;液体金属;浇铸;安全要求;扰动方法;运输
【英文主题词】:
【摘要】:
【中国标准分类号】:K61
【国际标准分类号】:25_180_10
【页数】:19P;A4
【正文语种】:其他


【英文标准名称】:Naturalgas-Calculationofcompressionfactor-Part1:Introductionandguidelines
【原文标准名称】:天然气.压缩因子的计算.第1部分:介绍和指南
【标准号】:ISO12213-1-2006
【标准状态】:现行
【国别】:国际
【发布日期】:2006-11
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC193
【标准类型】:()
【标准水平】:()
【中文主题词】:计算方法;压缩气体;压缩;浓度(化学);团料;定义;混合气体;一般条件;材料试验;数学计算;天然气;实际油气比
【英文主题词】:Calculatingmethods;Compacting;Compressedgas;Compression;Concentration(chemical);Conglomerates;Definitions;Entries;Gasmixtures;Generalconditions;Materialstesting;Mathematicalcalculations;Naturalgas;Realgasfactors
【摘要】:ISO12213specifiesmethodsforthecalculationofcompressionfactorsofnaturalgases,naturalgasescontainingasyntheticadmixtureandsimilarmixturesatconditionsunderwhichthemixturecanexistonlyasagas.Itisdividedintothreeparts:thispartofISO12213givesanintroductionandprovidesguidelinesforthemethodsofcalculationdescribedinISO12213-2andISO12213-3.Part2givesamethodforusewherethedetailedmolarcompositionofthegasisknown.Part3givesamethodforusewherealessdetailedanalysis,comprisingsuperiorcalorificvalue(volumetricbasis),relativedensity,carbondioxidecontentand(ifnon-zero)hydrogencontent,isavailable.Bothmethodsareapplicabletodrygasesofpipelinequalitywithintherangeofconditionsunderwhichtransmissionanddistribution,includingmeteringforcustodytransferorotheraccountingpurposes,arenormallycarriedout.Ingeneral,suchoperationstakeplaceattemperaturesbetweenabout263Kand338K(approximately-10℃to65℃)andpressuresnotexceeding12MPa(120bar).Withinthisrange,theuncertaintyofpredictionofbothmethodsisabout0,1％providedthattheinputdata,includingtherelevantpressureandtemperature,havenouncertainty.ThemethodgiveninPart2isalsoapplicable(withincreaseduncertainty)tobroadercategoriesofnaturalgas,includingwetorsourgases,withinawiderrangeoftemperaturesandtohigherpressure,forexampleforreserviororundergroundstorageconditionsorforvehicular(NGV)applications.ThemethodgiveninPart3isapplicabletogaseswithahighercontentofnitrogen,carbondioxideorethanethannormallyfoundinpipelinequalitygas.Themethodmayalsobeappliedoverwiderrangesoftemperatureandpressurebutwithincreaseduncertainty.Forthecalculationmethodsdescribedtobevalid,thegasmustbeaboveitswaterandhydrocarbondewpointsattheprescribedconditions.ThisInternationalStandardgivesalloftheequationsandnumericalvaluesneededtoimplementbothmethod.Itisplannedtomakeverifiedcomputerprogramsavailable(seeAnnexB).
【中国标准分类号】:E24
【国际标准分类号】:75_060
【页数】:13P;A4
【正文语种】:英语