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BS EN 308-1997 热交换器.确定空气对空气和烟道燃气热量回收装置性能的试验程序

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【英文标准名称】:Heatexchangers-Testproceduresforestablishingtheperformanceofairtoairandfluegasesheatrecoverydevices
【原文标准名称】:热交换器.确定空气对空气和烟道燃气热量回收装置性能的试验程序
【标准号】:BSEN308-1997
【标准状态】:现行
【国别】:英国
【发布日期】:1997-07-15
【实施或试行日期】:1997-07-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:内部;外部;煤气;分类系统;热力工程;误差;烟道;温度;报告;湿度;比率;热传递;气体;热交换器;试验条件;试验设备;排气;实验室试验;空气;压力试验;漏泄试验;额定值;性能;压力;准确度
【英文主题词】:Air-to-airheatexchanger;Definition;Definitions;Determination;Efficiency;Exhaustgases;Heataccumulators;Heatexchangers;Measurement;Measuringincertainity;Performance;Ratingtests;Specification(approval);Storageheaters;Testing;Testingconditions;Thermodynamicproperties;Wasteheatrecovery
【摘要】:ThisEuropeanStandardspecifiesmethodstobeusedforlaboratorytestingofair-to-airheatrecoverydevicesorthoserecoveringheatfromfluegasesofheatingappliancesinbuildings(exceptprocess-processapplications)toobtainratingdata.Itgivestestrequirementsandproceduresforperformingsuchtestsandspecifiesinputcriteriarequiredforteststoverifyperformancedatagivenbythemanufacturer.Forthepurposesofthisstandard,thetermexhaustairmayalsobetakentomeantheproductsofcombustion.ThisEuropeanStandardisintendedtobeusedasabasisfortestingheatrecoverydevicesforHVACsystems,whichasspecifiedinprEN247consistoftheheatexchangeritselfinstalledinacasinghavingthenecessaryairductconnectingelementsandinsomecasesthefansandpumps,butwithoutanyadditionalcomponentsoftheHVACsystem.ThisEuropeanStandardisapplicabletothefollowingcategoriesofheatexchangers:CategoryⅠRecuperatorsCategoryⅡWithintermediaryheattransfermediumCategoryⅡa:withoutphase-changeCategoryⅡb:withphase-change(heatpipe,..)CategoryⅢRegenerators(containingaccumulatingmass)CategoryⅡ1a:nonhygroscopicCategoryⅡ1b:hygroscopicHeatrecoverydeviceswithexchangersandintermediaryheattransfermediumwithoutphase-change(categoryⅡa)aretobetestedasoneunitincludingpumpandpipesystembetweenthecoils.ThisEuropeanStandardprescribestestmethodsfordetermining:a)theexternalleakage;b)theinternalleakageofexhaustairtothesupplyairwithinthedeviceatagivenpressuredifferencebetweenairducts,forrecoverydevicesofcategoriesⅠandⅡ;c)thecarry-overofexhaustairtothesupplyairinrecoverydevicesofcategoryⅢ;d)thetemperatureandhumidityratios;e)thepressuredropofexhaustairandsupplyairsides.
【中国标准分类号】:J75
【国际标准分类号】:27_060_30
【页数】:18P.;A4
【正文语种】:英语


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基本信息
标准名称:齿科精细陶瓷可加工性检测方法
英文名称:Test method for machinability of dental fine ceramics
中标分类: 建材 >> 陶瓷、玻璃 >> 特种陶瓷
ICS分类: 玻璃和陶瓷工业 >> 陶瓷 >> 高级陶瓷
发布部门:中华人民共和国工业和信息化部
发布日期:2010-11-22
实施日期:2011-03-01
首发日期:
作废日期:
归口单位:全国工业陶瓷标准化技术委员会
起草单位:中国科学院上海硅酸盐研究所、上海应用技术学院、上海交通大学附属第九人民医院
出版社:建材工业出版社
出版日期:2011-03-01
适用范围

本标准规定了齿科精细陶瓷可加工性检测的原理、仪器设备、试样、检测步骤和结果计算、检测报告等。
本标准适用于所有齿科精细陶瓷,其它精细陶瓷也可参考。

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所属分类: 建材 陶瓷 玻璃 特种陶瓷 玻璃和陶瓷工业 陶瓷 高级陶瓷
Product Code:SAE J413
Title:Mechanical Properties of Heat Treated Wrought Steels
Issuing Committee:Carbon And Alloy Steels Committee
Scope:The figures in this SAE Information Report illustrate the principle that, regardless of composition, steels of the same cross-sectional hardness produced by tempering after through hardening will have approximately the same longitudinal tensile strength at room temperature.Figure 1 shows the relation between hardness and longitudinal tensile strength of 0.30 to 0.50% carbon steels in the fully hardened and tempered, as rolled, normalized, and annealed conditions. Figure 2 showing the relation between longitudinal tensile strength and yield strength, and Figure 3 illustrating longitudinal tensile strength versus reduction of area, are typical of steels in the quenched and tempered condition. Figure 3 shows the direct relationship between ductility and hardness and illustrates the fact that the reduction of area decreases as hardness increases, and that, for a given hardness, the reduction of area is generally higher for alloy steels than for plain carbon steels.It is evident from these curves that steels of the same cross-sectional hardness have about the same strength characteristics, so that any one of several different compositions would yield the same results. For some specific application then, the first thing to be determined is what composition is required to obtain proper hardening in the size section involved. This information is not contained in mechanical property charts, but can be determined from published data or by means of a hardenability test. Methods of making this hardenability test and interpretation of the test results are provided in SAE J406b.