BS ISO/IEC 10373-6-2001+A7-2010 标识卡.试验方法.感应卡

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【英文标准名称】:SpecificationforEthylAcetate(85TO88PercentGrade)
【原文标准名称】:池塘、水渠和水库衬砌用聚乙烯和乙烯共聚物塑料薄板
【标准号】:ASTMD302-1985
【标准状态】:作废
【国别】:
【发布日期】:1985
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:聚乙烯;划线;沟道;池塘;塑料;挖掘;建筑;施工材料;水密材料
【英文主题词】:
【摘要】:
【中国标准分类号】:G33
【国际标准分类号】:
【页数】:
【正文语种】:


【英文标准名称】:StandardTestMethodforDeterminingAirChangeinaSingleZonebyMeansofaTracerGasDilution
【原文标准名称】:用示踪气体稀释法测定单区内空气变化的标准试验方法
【标准号】:ASTME741-2000(2006)e1
【标准状态】:现行
【国别】:美国
【发布日期】:2000
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E06.41
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:airchange;airchangeflow;airchangerate;airchangesperhour;airexchange;airleakage;airleakagerate;concentration;tracergas;concentrationdecay;constantconcentration;constantinjection;envelope;building;exfiltration;infiltration;tr
【摘要】:EffectsofAirChange8212;Airchangeoftenaccountsforasignificantportionoftheheatingorair-conditioningloadofabuilding.Italsoaffectsthemoistureandcontaminantbalancesinthebuilding.Moisture-ladenairpassingthroughthebuildingenvelopecanpermitcondensationandcausematerialdegradation.Anappropriatelevelofventilationisrequiredinallbuildings;oneshouldconsultASHRAEStandard62todeterminetheventilationrequirementsofabuilding.PredictionofAirChange8212;Airchangedependsonthesizeanddistributionofairleakagesites,pressuredifferencesinducedbywindandtemperature,mechanicalsystemoperation,andoccupantbehavior.Airchangemaybecalculatedfromthisinformation,however,manyoftheneededparametersaredifficulttodetermine.Tracergastestingpermitsdirectmeasurementofairchange.UtilityofMeasurement8212;Measurementsofairchangeprovideusefulinformationaboutventilationandairleakage.Measurementsinbuildingswiththeventilationsystemclosedareusedtodeterminewhethernaturalairleakageratesarehigherthanspecified.Measurementswiththeventilationsysteminoperationareusedtodeterminewhethertheairchangemeetsorexceedsrequirements.KnownConditions8212;Knowledgeofthefactorsthataffectairchangemakesmeasurementmoremeaningful.Relatingbuildingresponsetowindandtemperaturerequiresrepetitionofthetestundervaryingmeteorologicalconditions.Relatingbuildingresponsetotheventilationsystemortooccupantbehaviorrequirescontrolledvariationofthesefactors.ApplicabilityofResults8212;Thevaluesforairchangeobtainedbythetechniquesusedinthistestmethodapplytothespecificconditionsprevailingatthetimeofthemeasurement.Airchangevaluesforthesamebuildingwilldifferiftheprevailingwindandtemperatureconditionshavechanged,iftheoperationofthebuildingisdifferent,oriftheenvelopechangesbetweenmeasurementsbecauseofconstructionordeterioration.Todetermineairleakagesites,followPracticeE1186.FanPressurization8212;Arelatedtechnique(TestMethodE779)usesafantopressurizethebuildingenvelope.Measurementsofcorrespondingairflowsandpressuredifferencesacrosstheenvelopecharacterizeenvelopeairtightnessaseithertheairleakagerateunderspecifiedinducedpressuredifferencesortheequivalentleakageareaoftheenvelope.Thesefactorspermitmodelingnaturalairchangeduetowindandtemperaturedifferences.However,directmeasurementofnaturalairchangeisnotpossiblewithTestMethodE779.TestMethodE779permitscomparisonofdifferentbuildings,isolationofleakagesites,andevaluationofretrofitmeasures.1.1Thistestmethodcoverstechniquesusingtracergasdilutionfordeterminingasinglezone''sairchangewiththeoutdoors,asinducedbyweatherconditionsandbymechanicalventilation.Thesetechniquesare:(1)concentrationdecay,(2)constantinjection,and(3)constantconcentration.1.2Thistestmethodisrestrictedtoanysingletracergas.Theassociateddataanalysisassumesthatonecancharacterizethetracergasconcentrationwithinthezonewithasinglevalue.Thezoneshallbeabuilding,vehicle,testcell,oranyconformingenclosure.1.3Useofthistestmetho......
【中国标准分类号】:Z15
【国际标准分类号】:13_040_01
【页数】:17P.;A4
【正文语种】:英语