JIS K9019-1996 12水二氢生成磷酸二钠

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【英文标准名称】:StandardPracticeforIn-SituMeasurementsofHeatFluxinIndustrialThermalInsulationUsingHeatFluxTransducers
【原文标准名称】:使用热通量转换器现场测定工业隔热材料的热通量用标准实施规程
【标准号】:ASTMC1041-2010
【标准状态】:现行
【国别】:
【发布日期】:2010
【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】:热流量;热通量转换器;工业应用;现场测量;防护内衬;传感器;贮水池;热传导系数;实地隔热测量
【英文主题词】:heatflux;heatfluxtransducer;industrialapplication;insitumeasurement;Protectivelinings;Sensors;Tanks;Thermaltransmissionproperties;Fieldtesting--thermalinsulation
【摘要】:Themajorcontributionofthispracticeisthatitenablesameasurementofthereal-timeenergylossorgainthroughachosensurfaceofanexistingprocessinsulationwithminimaldisturbancetotheheatfluxthroughtheinsulatingbody.Theprimaryuseofthispracticewillbeforthein-situestimationofthermaltransportpropertiesofindustrialinsulationsuchasusedonpipes,tanks,ovens,andboilers,operatingundernormalprocessconditions.Errorsattributabletoheatflowmeasurementsoverasmallareaorshorttermtestingcanbemisleadingandthispracticeisintendedtominimizesucherrors.InsulationprocesseswithlargetemperaturedifferencesacrosstheinsulationarebestsuitedtoHFTmeasurementsbecausemodestchangesinambientconditionshavebutminimaleffectsonHFToutput.WhileitwouldbeidealfortheHFTandattachmentsystemtohavezerothermalresistance,thisfactorisinsignificanttothemeasuredresultifkeptto5%orlessoftheresistanceoftheinsulatingsectionbeingtested.1.1Thispracticecoversthein-situmeasurementofheatfluxthroughindustrialthermalinsulationusingaheatfluxtransducer(HFT).1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thispracticeestimatesthethermaltransportpropertiesofthermalinsulationmaterialsin-situinfieldapplicationsunderpseudosteady-stateconditions.ItisnotintendedthatthispracticeshouldbeusedasasubstituteformorepreciselaboratoryproceduressuchasTestMethodsC177,C335,orC518.1.4ThispracticeislimitedbytherelativelysmallareathatcanbecoveredbyanHFTandbythetransienteffectsofenvironmentalconditions.1.5TemperaturelimitationsshallbeasspecifiedbythemanufactureroftheHFT.1.6Whileaccuratevaluesofheatfluxarehighlydependentuponpropercalibrationsundertheconditionsofuse,itisacceptabletousethecalibrationsprovidedbythemanufactureroftheHFTforcomparativeworkbetweensimilarmaterials,aging,orotherconditionsofuse.Note18212;Furtherinformationmaybefoundintheliterature(1-6).1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q25
【国际标准分类号】:27_220
【页数】:6P.;A4
【正文语种】:


【英文标准名称】:Hexagonflangebolts;smallseries
【原文标准名称】:六角法兰面螺栓小系列
【标准号】:ISO4162-1990
【标准状态】:作废
【国别】:国际
【发布日期】:1990-05
【实施或试行日期】:1990-05-15
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC2
【标准类型】:()
【标准水平】:()
【中文主题词】:规范;螺钉;名称与符号;螺栓;紧固件;六角头螺钉;尺寸
【英文主题词】:Bolts;Designations;Dimensions;Fasteners;Hexagonheadscrews;Screws(bolts);Specifications
【摘要】:ThisInternationalStandardgivesspecificationsforhexagonflangebolts,smallseries,withthreadsfromM5uptoandincludingM16andpropertyclasses8.8to10.9andA2-70.If,inspecialcases,specificationsotherthanthoselistedinthisInternationalStandardarerequired,theyshouldbeselectedfromexistingInternationalStandards,forexampleISO261,ISO888,ISO898-1,ISO965-2,ISO3506.
【中国标准分类号】:J13
【国际标准分类号】:21_060_10
【页数】:8P;A4
【正文语种】:英语