ISO 703-1975 输送机皮带.成槽性.横向挠度特性和试验方法
作者:标准资料网 时间:2024-05-25 09:17:54 浏览:9252
来源:标准资料网
【英文标准名称】:Conveyorbelts;troughability;characteristicsoftransverseflexibilityandtestmethod
【原文标准名称】:输送机皮带.成槽性.横向挠度特性和试验方法
【标准号】:ISO703-1975
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】:
【英文标准名称】:StandardSpecificationforPlasticMechanicalFittingsforUseonOutsideDiameterControlledPolyethyleneGasDistributionPipeandTubing
【原文标准名称】:外径可控的聚乙烯配气管用塑料机械配件的标准规范
【标准号】:ASTMF1924-2005
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:气体;配件;塑料;试验方法;聚氯乙烯;旋转试验;质量要求;燃气管
【英文主题词】:Fittings;Gaspipes;Gases;Plastics;Polyvinylchloride;Qualityrequirements;Rotationtests;Testmethods
【摘要】:
【中国标准分类号】:G95
【国际标准分类号】:23_040_45
【页数】:4P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforVolumetricandMassFlowRateMeasurementinaDuctUsingTracerGasDilution
【原文标准名称】:用示踪气体稀释法测量管道中体积和质量流量率的标准试验方法
【标准号】:ASTME2029-1999(2004)
【标准状态】:现行
【国别】:
【发布日期】:1999
【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】:容积流量测量;流量率;流量率;竖管;示踪法;物流;管道;示踪气体;污染控制;运河;测量体积流量
【英文主题词】:ducts;flowrate;massflow;stacks;volumetricflow;tracergas
【摘要】:Themethodpresentedhereisafieldmethodthatmaybeusedtodeterminemassandvolumeflowratesinductswhereflowconditionsmaybeirregularandnonuniform.Thegasflowingintheductisconsideredtobeanidealgas.Themethodmaybeespeciallyusefulinthoselocationswhereconventionalpitottubeorthermalanemometervelocitymeasurementsaredifficultorinappropriatedueeithertoverylowaverageflowvelocityorthelackofasuitablerunofductupstreamanddownstreamofthemeasurementlocation.Thistestmethodcanproducethevolumetricflowrateatstandardconditionswithouttheneedtodeterminegasstreamcomposition,temperature,andwatervaporcontent.ThistestmethodisusefulfordeterminingmassorvolumetricflowratesinHVACducts,fumehoods,ventstacks,andminetunnels,aswellasinperformingmodelstudiesofpollutioncontroldevices.Thistestmethodisbasedonfirstprinciples(conservationofmass)anddoesnotrequireengineeringassumptions.Thistestmethoddoesnotrequirethemeasurementoftheareaoftheductorstack.Thetestmethoddoesnotrequireflowstraightening.Thetestmethodisindependentofflowconditions,suchasangle,swirl,turbulence,reversals,andhence,doesnotrequireflowstraightening.Thedryvolumetricairflowcanbedeterminedbydryingtheairsampleswithoutmeasuringthewatervaporconcentration.1.1Thistestmethoddescribesthemeasurementofthevolumetricandmassflowrateofagasstreamwithinaduct,stack,pipe,minetunnel,orflueusingatracergasdilutiontechnique.Foreditorialconvenienceallreferencesinthetextwillbetoaduct,butitshouldbeunderstoodthatthiscouldreferequallywelltoastack,pipe,minetunnel,orflue.Thistestmethodislimitedtothoseapplicationswherethegasstreamandthetracergascanbetreatedasidealgasesattheconditionsofthemeasurement.Inthistestmethod,thegasstreamwillbereferredasair,thoughitcouldbeanyothergasthatexhibitsidealgaslawbehavior.1.2Thistestmethodisnotrestrictedtoanyparticulartracergasalthoughexperimentalexperiencehasshownthatcertaingasesareusedmorereadilythanothersassuitabletracergases.Itispreferablethatthetracergasnotbeanaturalcomponentofthegasstream.1.3Useofthistestmethodrequiresaknowledgeoftheprinciplesofgasanalysisandinstrumentation.Correctuseoftheformulaspresentedhererequiresconsistentuseofunits.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesandtodeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificprecautionarystatements,seeSection7.
【中国标准分类号】:A42
【国际标准分类号】:13_040_01
【页数】:10P.;A4
【正文语种】:
