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【英文标准名称】:Aerospaceseries-Groovedimensionsforaxialmountinginternaltyperetainingrings
【原文标准名称】:航空航天系列.轴安装内部固定环用槽尺寸
【标准号】:BSEN3425-2006
【标准状态】:现行
【国别】:英国
【发布日期】:2006-06-30
【实施或试行日期】:2006-06-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:航空工程;航空航天运输;航空运输;飞行器;飞行器部件;轴向;基本偏差;孔径;特性;部件;设计;尺寸;紧固件;工业;键槽;多语种的;公称尺寸;航天运输;规范;规范(验收);弹簧固定环;井
【英文主题词】:Aeronauticalengineering;Aerospacetransport;Airtransport;Aircraft;Aircraftcomponents;Axial;Basicdeviations;Bores;Characteristics;Components;Design;Dimensions;Fasteners;Industries;Keyways;Multilingual;Nominalsize;Spacetransport;Specification;Specification(approval);Springretainingrings;Wells
【摘要】:Thisstandarddefinesthedimensionsofgroovesforaxialmounting,internaltype,retainingrings.
【中国标准分类号】:V20
【国际标准分类号】:49_030_50
【页数】:10P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforAirflowCalibrationofFanPressurizationDevices
【原文标准名称】:风扇增压装置气流校正的标准试验方法
【标准号】:ASTME1258-1988(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1988
【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】:air-leakagemeasurement;airflowcalibration;airflowmeasurement;buildingenvelopes;fandepressurizationdevices;Airpressuretesting--buildingconstructions/materials;Buildingenvelopes;Calibration--air/atmosphericanalysisinstruments;Chambernoz
【摘要】:Thefanpressurizationprocedureprovidesarelativelyfastevaluationoftheairtightnessofbuildingenvelopes.Inorderfortheaccuracyofthetestresultstobeknown,theairflowratemeasurementtechniqueofthefanpressurizationsystemmustbecalibrated.Thistestmethodisapplicabletofanpressurizationsystemsthatareinstalledinanopeninginthebuildingenvelope,asopposedtopressurizationtechniquesinvolvingthemechanicalventilationsystemofthebuilding.Thetechniqueofpressurizationtestingofbuildingsputsspecificrequirementsonthecalibrationoffanpressurizationsystems.Thecalibrationmustcovertherangeoffanpressuredifferences(approximately12.5to75Pa)thatisinducedduringpressurizationtests.Thecalibrationmustalsocoverarangeinfanairflowratescorrespondingtotherangeinbuildingsizeandairtightnessthatthefanpressurizationsystemwillencounterinthefield.Thefanpressurizationsystemmustbecalibratedinbothdirectionsofairflowusedtopressurizeanddepressurizeabuildingifthesystemairflowdirectionisreversible.Thesetwocalibrationscanbeconductedusingthevarioussetupsdescribedinthistestmethod;howeversomeofthesetupscanbecombinedsuchthatasinglecalibrationfacilitycanbeusedtocalibratethefaninbothdirections.Suchasinglesetupmayinvolvemovingthefanpressurizationsystemfromoneendofthechambertotheother,reversingtheorientationofthesystematthesameendofthechamber,oritmaynotrequiremovingthesystematall.Thecalibrationtechniqueisapplicabletothetwobasictypesoffanpressurizationsystemsinuse,r/mindoorsandsignaldoors.Forfanpressurizationsystemsthatoperateinmultiplerangesofairflowrate,thesystemmustbecalibratedineachrange.Thecalibrationtechniqueisintendedtoprovideacompletecalibrationofafanpressurizationsystem.Aftercalibratingseveralsystemsofanidenticalorsimilardesign,thefanairflowratemaybefoundtobeindependentofcertainparameterssuchasfanpressuredifference.Othersimplifyingrelationsbetweenfanairflowrateandfanspeedorfansignalmaybeobserved.Iftheserelationsareobserved,amanufacturerorothercalibratormaychoosetosimplifythecalibrationprocedurebyreducingthenumberofcalibrationpoints.Theuseoffanpressurizationsystemsinactualbuildingsintroducesadditionalfactorsthatmaycauseerrorsintheairflowratemeasurementthatarenotaccountedforbythecalibration.Thesefactorsincludeoperatorandweathereffectsandinterferencefrominternalpartitionsandotherobstructions.^1.1Thistestmethodcoverstheairflowmeasurementcalibrationtechniquesforfanpressurizationsystemsusedformeasuringairleakageratesthroughbuildingenvelopes.1.2ThistestmethodisapplicabletosystemsusedforairleakagemeasurementasdescribedinPracticeE779.1.3Thistestmethodinvolvestheinstallationofthefanpressurizationsysteminacalibrationchamber.Useofthefanpressurizationsysteminanactualbuildingmayintroduceadditionalerrorsintheairflowmeasurementduetooperatorinfluence,interferenceofinternalpartitionsandfurnishings,weathereffects,andotherfactors.1.4Theproperuseofthistestmethodrequiresaknowledgeoftheprinciplesofairflowandpressuremeasurement.1.5Thisstandardincludestwobasicprocedures,apreferredprocedure,basedonASHRAE51/AMCA210,andanoptionalprocedurebasedonanonstandardairflowmeasurementtechnique,commonlyusedbymanufacturersoffanpressurizationdevices,butwhichhasnotbeencomparedwithstandardairflowmeasurementtechniques.1.6Thisstandarddoesnotpu......
【中国标准分类号】:J72
【国际标准分类号】:23_120
【页数】:9P.;A4
【正文语种】:英语