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【英文标准名称】:StandardSpecificationforCarbonandAlloySteelBarsforSprings
【原文标准名称】:弹簧用碳素钢及合金钢棒的标准规范
【标准号】:ASTMA689-1997(2007)e1
【标准状态】:现行
【国别】:美国
【发布日期】:1997
【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】:A01.15
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:Alloysteelbars--specifications;Carbonsteelbars/shapes--specifications;Coilsprings;Leafsprings;Steelsprings--specifications;Torsionsprings
【摘要】:1.1Thisspecificationcovershot-wroughtsteelbarstobeusedforthemanufactureofgeneral-purposespringssuchascoil,torsion,andleaf.1.2Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.
【中国标准分类号】:H44
【国际标准分类号】:77_140_25
【页数】:4P.;A4
【正文语种】:英语


【英文标准名称】:Energyperformanceofbuildings-Sensibleroomcoolingloadcalculation-Generalcriteriaandvalidationprocedures;EnglishversionofDINEN15255:2007-11
【原文标准名称】:建筑物的能量性能.有效的房间制冷负荷计算.一般标准和确认程序
【标准号】:DINEN15255-2007
【标准状态】:现行
【国别】:德国
【发布日期】:2007-11
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:空调器;建筑物;计算公式;元部件;建筑;制冷负荷;计算标准;数据;定义;尺寸选定;热学;热平衡;内部温度;数学计算;计算方法;表面温度;温度;测试;结构热工性能;温度致适;隔热;热性能;热防护;转换系数;证实
【英文主题词】:Airconditioners;Buildings;Calculationformula;Components;Construction;Coolingloads;Criteriaforcalculations;Data;Definition;Definitions;Dimensioning;Heat;Heatbalance;Internaltemperature;Mathematicalcalculations;Methodsofcalculation;Surfacetemperatures;Temperature;Testing;Thermalbehaviourofstructures;Thermalcomfort;Thermalinsulation;Thermalproperties;Thermalprotection;Transfercoefficient;Validation
【摘要】:ThisEuropeanStandardsetsoutthelevelofinputandoutputdata,andprescribestheboundaryconditionsrequiredforacalculationmethodofthesensiblecoolingloadofasingleroomunderconstantand/orfloatingtemperaturetakingintoaccountthelimitofthepeakcoolingloadofthesystem.ItincludesaclassificationschemeofthecalculationmethodandthecriteriatobemetbyacalculationmethodinordertocomplywiththisEuropeanStandard.ThepurposeofthisEuropeanStandardistovalidatecalculationmethodsusedto:--evaluatethemaximumcoolingloadforequipmentselectionandcoolingsystemdesign;--evaluatethetemperatureprofilewhenthecoolingcapacityofthesystemisreduced;--providedataforevaluationoftheoptimumpossibilitiesforloadreduction;--allowanalysisofpartialloadsasrequiredforsystemdesign,operationandcontrol.Thevalidationprocedureisusedtochecktheroomsensibleheatbalancemodel,takingintoaccount:--theexternalsurfaceheatbalance;--theconductionthroughthebuildingenvelope;--theeffectofthethermalmassofthestructures;--theinternalsurfaceheatbalance;--theairheatbalance;--theheatbalancesolutionmethod.Allotheraspectsaregiveneitherbyfixedboundaryconditionsorbyinputdataandarenotinthefocusofthemodelvalidation.Itisassumedthatforalltheseothermatterse.g.embeddedheatingandcoolingsystems,prescriptivemodelshavetobeusedaccordingtoexistingEuropeanStandards.InformativeAnnexAgivesasimplifiedmethodforcoolingloadcalculation.
【中国标准分类号】:P31
【国际标准分类号】:91_140_30
【页数】:49P.;A4
【正文语种】:英语