【英文标准名称】:StandardPracticeforExposureofSolarCollectorCoverMaterialstoNaturalWeatheringUnderConditionsSimulatingStagnationMode
【原文标准名称】:在模拟滞留模式下暴露于自然气候下的太阳能收集器挡盖材料的标准实施规程
【标准号】:ASTME881-1992(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1992
【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】:E44.05
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:naturalweathering;solarcollectorcovers;stagnation;variable-angleexposure;weathering;Solarcollectors;Stagnationconditions;Weathering(solardevices)
【摘要】:Thispracticedescribesaweatheringboxtestfixtureandestablisheslimitsfortheheatlosscoefficients.Uniformexposureguidelinesareprovidedtominimizethevariablesencounteredduringoutdoorexposuretesting.Sincethecombinationofelevatedtemperatureandsolarradiationmaycausesomesolarcollectorcovermaterialstodegrademorerapidlythaneitherexposurealone,aweatheringboxthatelevatesthetemperatureofthecovermaterialsisused.Thispracticemaybeusedtoassistintheevaluationofsolarcollectorcovermaterialsinthestagnationmode.Nosingletemperatureorprocedurecanduplicatetherangeoftemperaturesandenvironmentalconditionstowhichcovermaterialsmaybeexposedduringstagnationconditions.Toassistinevaluationofsolarcollectorcovermaterialsintheoperationalmode,PracticeE782shouldbeused.Insufficientdataexisttoobtainexactcorrelationbetweenthebehaviorofmaterialsexposedinaccordancewiththispracticeandactualin-serviceperformance.Thispracticemayalsobeusefulincomparingtheperformanceofdifferentmaterialsatonesiteortheperformanceofthesamematerialatdifferentsites,orboth.MeansofevaluatingtheeffectsofweatheringareprovidedinPracticeE765,andinotherASTMtestmethodsthatevaluatematerialproperties.Exposuresofthetypedescribedinthispracticemaybeusedtoevaluatethestabilityofsolarcollectorcovermaterialswhenexposedoutdoorstothevariedinfluencesthatcompriseweather.Exposureconditionsarecomplexandchangeable.Importantfactorsarematerialtemperature,climate,timeofyear,presenceofindustrialpollution,etc.Generally,becauseitisdifficulttodefineormeasurepreciselythefactorsinfluencingdegradationduetoweathering,resultsofoutdoorexposuretestsmustbetakenasindicativeonly.Repeatedexposuretestingatdifferentseasonsoveraperiodofmorethanoneyearisrequiredtoconfirmexposuretestsatanyonelocation.Controlsamplesmustalwaysbeusedinweatheringtestsforcomparativeanalysis.1.1Thispracticecoversaprocedurefortheexposureofsolarcollectorcovermaterialstothenaturalweatherenvironmentatelevatedtemperaturesthatapproximatestagnationconditionsinsolarcollectorshavingacombinedbackandedgelosscoefficientoflessthan1.5W/(m2x00B7;x00B0;C).1.2Thispracticeissuitableforexposureofbothglassandplasticsolarcollectorcovermaterials.Provisionsaremadeforexposureofsingleanddoublecoverassembliestoaccommodatetheneedforexposureofbothinnerandoutersolarcollectorcovermaterials.1.3Thispracticedoesnotapplytocovermaterialsforevacuatedcollectors,photovoltaiccells,flat-platecollectorshavingacombinedbackandedgelosscoefficientgreaterthan1.5W/(m2x00B7;x00B0;C),orflat-platecollectorswhosedesignincorporatesmeansforlimitingtemperaturesduringstagnation.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:F12
【国际标准分类号】:27_160
【页数】:8P.;A4
【正文语种】:英语


【英文标准名称】:Manuallyoperatedtapsforgasburningappliances
【原文标准名称】:燃气器具的手动龙头
【标准号】:BSEN1106-2001
【标准状态】:作废
【国别】:英国
【发布日期】:2001-03-15
【实施或试行日期】:2001-03-15
【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】:压力;气阀;阀门部件;燃气技术;人力驱动装置;性能试验;等级(质量);流量测量;性能;阀门;漏泄试验;耐久性;气体润滑剂;设计;机械试验;作标记
【英文主题词】:Activities;Adjustingdevices;Adjustingelements;Bending;Classification;Components;Constructionrequirements;Constructions;Controlsystems;Correctingunits;Corrosion;Corrosionprotection;Corrosionresistance;Definitions;Density;Design;Dimensions;Durability;Enclosures;Flowcharacteristics;Flows;Functions;Gasappliances;Gasburners;Gasstoves;Gaskets;Gas-powereddevices;Handoperated;Instructionsforuse;Maintenanceinstructions;Manual;Manualoperation;Marking;Materials;Operation;Presetdevice;Properties;Safety;Safetyengineering;Safetyrequirements;Scratches;Seals;Settingmeans;Specification(approval);Testing;Testingconditions;Threads;Tightness;Torque;Torsion;Torsiontests;Usetests;Valves;Zinc
【摘要】:ThisEuropeanStandardspecifiesthesafety,constructionandperformancerequirementsformanuallyoperatedtapsandpre-settingdevicesforgasburningappliances.Italsogivesthetestproceduresforevaluatingtheserequirementsandinformationnecessaryforthepurchaserandtheuser.Thisstandardappliestocontroltapswithadeclaredoperatingpressureuptoandincluding200mbarforuseinappliancesforusewithgasesinaccordancewithEN437.Thisstandarddoesnotapplytomanuallyoperatedshut-offvalvesconformingtoEN331.Themethodsoftestgiveninthisstandardareintendedforproducttypetesting.Testsintendedforproductiontestingarenotspecificallyincluded.
【中国标准分类号】:Q82
【国际标准分类号】:23_060_40
【页数】:38P.;A4
【正文语种】:英语