基本信息
| 标准名称： | ８ＧＨｚ数字微波通信设备通用技术条件 |
| 英文名称： | General specification for 8GHz digital microwave communication equipment |
| 中标分类： |
医药、卫生、劳动保护 >>
医药、卫生、劳动保护综合 >>
技术管理 |
| ICS分类： |
|
| 发布部门： | 中华人民共和国电子工业部 |
| 发布日期： | 1997-09-03 |
| 实施日期： | 1998-01-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 归口单位： | 电子工业部标准化研究所 |
| 起草单位： | 电子工业部国营漓江无线电厂 |
| 起草人： | 邵中行、张明德、姜玉彦、陈文明、唐玉珍 |
| 出版社： | 电子工业出版社 |
| 出版日期： | 1998-01-01 |
| 页数： | 17页 |
适用范围
本标准规定了8GH z数字微波通信设备(以下简称设备)的要求、试验方法、检验规则以及标志、包装、运输、贮存等内容。
本标准适用于8GHz中小容量的数字微波接力通信设备及同类产品。
前言
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目录
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引用标准
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所属分类： 医药 卫生 劳动保护 医药 卫生 劳动保护综合 技术管理
【英文标准名称】:StandardTestMethodforMeasuringtheSteady-StateThermalTransmittanceofFenestrationSystemsUsingHotBoxMethods
【原文标准名称】:隔热箱法测定主窗设计系统的稳态热传递系数的标准试验方法
【标准号】:ASTMC1199-2009e1
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:doors;fenestration;heat;hotbox;R-value;steady-state;testing;thermaltransmission;U-factor;U-value;windows;Calibration--temperatureanalysisinstrumentation;Doors/doorassemblies;Homogeneouswall;Hotplate/boxmethods;Maskingsoundmeasurem
【摘要】:ThistestmethoddetailsthecalibrationandtestingproceduresandnecessaryadditionaltemperatureinstrumentationrequiredinapplyingTestMethodC1363tomeasurethethermaltransmittanceoffenestrationsystemsmountedverticallyinthethermalchamber.4.2Thethermaltransmittanceofatestspecimenisaffectedbyitssizeandthree-dimensionalgeometry.Caremustbeexercisedwhenextrapolatingtoproductsizessmallerorlargerthanthetestspecimen.Therefore,itisrecommendedthatfenestrationsystemsbetestedattherecommendedsizesspecifiedinPracticeE1423orNFRC100.Sincebothtemperatureandsurfaceheattransfercoefficientconditionsaffectresults,useofrecommendedconditionswillassistinreducingconfusioncausedbycomparingresultsoftestsperformedunderdissimilarconditions.StandardizedtestconditionsfordeterminingthethermaltransmittanceoffenestrationsystemsarespecifiedinPracticeE1423andSection6.2.Theperformanceofatestspecimenmeasuredatstandardizedtestconditionsispotentiallydifferentthantheperformanceofthesamefenestrationproductwheninstalledinthewallofabuildinglocatedoutdoors.Standardizedtestconditionsoftenrepresentextremesummerorwinterdesignconditions,whicharepotentiallydifferentthantheaverageconditionstypicallyexperiencedbyafenestrationproductinstalledinanexteriorwall.Forthepurposeofcomparison,itisessentialtocalibratewithsurfaceheattransfercoefficientsontheCalibrationTransferStandard(CTS)whichareascloseaspossibletotheconventionallyacceptedvaluesforbuildingdesign;however,thisprocedurecanbeusedatotherconditionsforresearchpurposesorproductdevelopment.Simiarly,itwouldbedesirabletohaveasurroundpanelthatcloselyduplicatestheactualwallwherethefenestrationsystemwouldbeinstalled.SincetherearesuchawidevarietyoffenestrationsystemopeningsinNorthAmericanresidential,commercialandindustrialbuildings,itisnotfeasibletoselectatypicalsurroundpanelconstructionforinstallingthefenestrationsystemtestspecimen.Furthermore,forhighresistancefenestrationsystemsinstalledinfenestrationopeningdesignsandconstructionsthathavethermalbridges,thelargerelativeamountofheattransferthroughthethermalbridgewillcausetherelativelysmallamountofheattransferthroughthefenestrationsystemtohavealargerthandesirableerror.Forthisreason,theCalibrationTransferStandardandtestspecimenareinstalledinahomogeneoussurroundpanelconstructedfrommaterialshavingarelativelyhighthermalresistance.Installingthetestspecimeninarelativelyhighthermalresistancesurroundpanelplacesthefocusofthetestonthefenestrationsystemthermalperformancealone.Therefore,itisimportanttorecognizethatthethermaltransmittanceresultsobtainedfromthistestmethodareforideallaboratoryconditions,andshouldonlybeusedforfenestrationproductcomparisonsunlessthethermalbridgeeffectsthathavethepotentialtooccurduetothespecificdesignandconstructionofthefenestrationsystemopeningareincludedintheanalysis.4.5Thistestmethoddoesnotincludeprocedurestodeterminetheheatflowduetoeitherairmovementthroughthespecimenorsolarradiationeffects.Asaconsequence,thethermaltransmittanceresultsobtaineddonotreflectperformancesthatmaybeexpectedfromfieldinstallations.Itispossibletousetheresultsfromthistestmethodasinputtoannualenergyperformanceanalyseswhichincludesolar,andairleakageeffectstogetabetterestimateofhowthetestspecimenwouldperformwheninstalledinanactualbuilding.TodeterminetheSolarHeatGainCoefficientoffenestrationproducts,refertoNFRC200.Todetermineairleakagefor......
【中国标准分类号】:P32
【国际标准分类号】:
【页数】:23P.;A4
【正文语种】:英语