基本信息
| 标准名称： | 低压空气瓶 |
| 中标分类： |
船舶 >>
船用主辅机 >>
机舱设备 |
| 替代情况： | 被CB/T 493-98代替 |
| 发布日期： | |
| 实施日期： | 1987-12-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
| 页数： | 3页 |
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前言
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引用标准
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所属分类： 船舶 船用主辅机 机舱设备
【英文标准名称】:StandardPracticeforDeterminationofThermalResistanceofAtticInsulationSystemsUnderSimulatedWinterConditions
【原文标准名称】:模拟冬季条件下测定顶楼绝缘系统热阻性的标准规程
【标准号】:ASTMC1373-2003
【标准状态】:现行
【国别】:
【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】:C16.30
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:atticinsulation;convection;thermalresistance;winterconditions
【摘要】:1.1Thispracticepresentsalaboratoryproceduretodeterminethethermalresistanceofatticinsulationsystemsundersimulatedsteady-statewinterconditions.Thepracticeappliesonlytoatticinsulationsystemsthatfaceanopenatticairspace.1.2Thethermalresistanceoftheinsulationisinferredfromcalculationsbasedonmeasurementsonaceilingsystemconsistingofcomponentsconsistentwiththesystembeingstudied.Forexample,suchasystemmightconsistofagypsumboardorplywoodceiling,woodceilingjoists,andatticinsulationwithitstopexposedtoanopenairspace.Thetemperatureappliedtothegypsumboardorplywoodshallbeintherangeof18to24176;C(64to75176;F).Theairtemperatureabovetheinsulationshallcorrespondtowinterconditionsandmayrangefrom-46176;Cto10176;C(-51to50176;F).Thegypsumboardorplywoodceilingshallbesealedtopreventdirectairflowbetweenthewarmandcoldsidesofthesystem.1.3Thispracticeappliestoawidevarietyofloose-fillorblanketthermalinsulationproductsincludingfibrousglass,rock/slagwool,orcellulosicfibermaterials;granulartypesincludingvermiculiteandperlite;pelletizedproducts;andanyotherinsulationmaterialthatmaybeinstalledpneumaticallyorpouredinplace.Thepracticeconsiderstheeffectsonheattransferofstructures,specificallytheceilingjoists,substrate,forexample,gypsumboard,airfilms,andpossiblefacings,films,orothermaterialsthatmaybeusedinconjunctionwiththeinsulation.1.4Thispracticemeasuresthethermalresistanceoftheattic/ceilingsysteminwhichtheinsulationmaterialhasbeenpreconditionedaccordingtothematerialSpecificationsC549,C665,C739,andC764.1.5Thespecimenpreparationtechniquesoutlinedinthisstandarddonotcoverthecharacterizationofloose-fillmaterialsintendedforenclosedapplications.1.6Thispracticemaybeusedtocharacterizematerialbehaviorundercontrolledsteady-statelaboratoryconditionsintendedtosimulateactualtemperatureconditionsofuse.Thepracticedoesnotsimulateforcedairflowconditions.1.7AllvaluesshallbereportedinbothSIandinch-poundunitsunlessspecifiedotherwisebytheclient.1.8Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q25
【国际标准分类号】:91_120_10
【页数】:8P.;A4
【正文语种】: