ASTM D 1568-2005 烷基苯磺酸盐的取样与化学分析的标准试验方法

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【英文标准名称】:StandardPracticesforAirLeakageSiteDetectioninBuildingEnvelopesandAirBarrierSystems
【原文标准名称】:建筑物外层和空障系统漏气现场检测的标准实施规程
【标准号】:ASTME1186-2003(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【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】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:acousticmethod;airbarriersystem;airleakage;airleakagedetection;anemometermethod;bubblemethod;buildingenvelopes;infraredmethod;smoketracemethod;tracergasmethod;Acousticaltests;Airleakagetesting--buildingmaterials/constructions;
【摘要】:Airinfiltrationintotheconditionedspaceofabuildingaccountsforasignificantportionofthethermalspaceconditionload.Airinfiltrationcanaffectoccupantcomfortbyproducingdrafts,causeindoorairqualityproblemsbycarryingoutdoorpollutantsintooccupiedbuildingspaceand,inhothumidclimates,candepositmoistureinthebuildingenveloperesultingindeteriorationofbuildingenvelopecomponents.Incoldclimates,exfiltrationofconditionedairoutofabuildingcandepositmoistureinthebuildingenvelopecausingdeteriorationofbuildingenvelopecomponents.Differentialpressureacrossthebuildingenvelopeandthepresenceofairleakagesitescauseairinfiltrationandexfiltration(1).Insomebuildings,restrictingairmovementbetweeninteriorzonesofabuildingmaybedesiredtoseparatedissimilarinteriorenvironmentsorpreventthemovementofpollutants.Althoughnotdealtwithspecificallyinthisstandard,thedetectionpracticespresentedcanalsobeusefulindetectingairleaksbetweeninteriorzonesofthebuilding.Airleakagesitesareoftendifficulttolocatebecauseairflowsmaybesmallundertheprevailingweatherconditions.Windconditionscanaidinairleakagedetectionbyforcingairtoenterabuilding;however,whereairisexiting,thebuildingenvelopeconstructionmaymakeobservationsdifficult.Forthesereasons,forcedpressurizationordepressurizationisstronglyrecommendedforthosepracticeswhichrequirecontrolledflowdirection.Thetechniquesforairleakagesitedetectioncoveredinthesepracticesallowforawiderangeofflexibilityinthechoiceoftechniquesthatarebestsuitedfordetectingvarioustypesofairleakagesitesinspecificsituations.Theinfraredscanningtechniqueforairleakagesitedetectionhastheadvantageofrapidsurveyingcapability.Entirebuildingexteriorsurfacesorinsidewallsurfacescanbecoveredwithasinglescanorasimplescanningaction,providedtherearenoobscuringthermaleffectsfromconstructionfeaturesorincidentsolarradiation.Thedetailsofaspecificairleakagesitemaythenbeprobedmorecloselybyfocusingonthelocalarea.Localleakdetectioniswelladdressedwiththesmoketracer,anemometer,sounddetection,thebubbledetection,andthetracergastechniques,howeverthesetechniquesaretimeconsumingforlargesurfaces.Thepressurizedordepressurizedtestchamberandsmoketraceroradepressurizedtestchamberandleakdetectionliquidpracticescanbeusedinsituationswheredepressurizingorpressurizingtheentireenvelopeisimpractical,suchasisthecaseduringconstruction.Bothofthepracticesenablethedetectionofverysmallleaks.Toperformthesepracticesrequiresthattheairbarriersystembeaccessible.Complexityofbuildingairleakagesitesmaydiminishtheabilityfordetection.Forexample,usingthesounddetectionapproach,soundmaybeabsorbedinthetortuouspaththroughtheinsulation.Airmovingthroughsuchbuildingleakagepathsmaylosesomeofitstemperaturedifferentialandthusmakethermographicdetectiondifficult.Theabsenceofjet-likeairflowatanairleakagesitemaymakedetectionusingtheanemometerpracticedifficult.Stackeffectinmultistorycommercialbuildingscancausegravitydamperstostandopen.Computer-controlleddampersshouldbeplacedinnormalandnightmodestoaidindeterminingtheconditionsexistinginthebuilding.Sensitivepressuremeasurementequipmentcanbeusedforevaluatingpressurelevelsbetweenfloorsandtheexterior.Monitoringsystemsinhigh-techbuildingscansupplyqualitativedataonpressuredifferences.1.1Thesepracticescoverstandardizedtechniquesforlocatingairleakagesitesinbuildingenvelopesandairbarriersystems.1.2Thesepracticesofferachoiceof......
【中国标准分类号】:P31
【国际标准分类号】:91_120_99
【页数】:7P.;A4
【正文语种】:英语

标准名称：	电阻焊机通用技术条件
中标分类：	机械 >> 通用加工机械与设备 >> 焊接与切割设备
替代情况：	被GB/T 8366-1996代替
发布日期：	1900-01-01
实施日期：	1989-01-01
首发日期：	1900-01-01
作废日期：	1900-01-01
出版日期：	1900-01-01

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