Product Code:SAE AIR1191
Title:Performance of Low Pressure Ratio Ejectors for Engine Nacelle Cooling
Issuing Committee:S-12 Helicopter Powerplant Committee
Scope:Method: A general method for the preliminary design of a siingle, straight-sided, low subsonic ejector is presented. The method is based on the information presented in References 1, 2, 3, and 4, and utilizes analytical and empirical data for the sizing of the ejector mixing duct diameter and flow length. The low subsonic restriction applies because compressibility effects were not included in the development of the basic design equations. The equations are restricted to applications where Mach numbers within the ejector primary or secondary flow paths are equal to or less than 0.3.Procedure: A recommended step-by-step procedure is shown.Equations: The equations used in the procedure, as well as their derivations, are given.Sample Calculation: A sample calculation is presented to isllustrate the use of the basic method.【英文标准名称】:StandardTestMethodforDeterminingAcidExtractableContentinActivatedCarbonbyAshing
【原文标准名称】:通过灰化对活性碳中酸可提取含量的标准试验方法
【标准号】:ASTMD6385-1999(2006)
【标准状态】:现行
【国别】:
【发布日期】:1999
【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】:D28.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:酸可提取的;灰;酸;活性碳
【英文主题词】:acid;acidextractable;activatedcarbon;ash
【摘要】:Thequantitativedeterminationofacidextractablecontentisusefulinevaluatingactivatedcarbonsamplesthatcontainacidsolubleimpurities.Theseacidsolubleimpuritiescanaffectapplicationsofactivatedcarbon.LimitationsofMethod8212;Hydrochloricacidisusedinthistestmethodastheextractingacid.Allelementsorcompoundspresentintheactivatedcarbonsample,whichcanbeacidextracted,areassumedtoformwatersolublechloridesalts.Hydrochloricacidmaynotsolubilizeallimpuritiesofactivatedcarbon.1.1Thistestmethodistobeusedfordeterminationoftheacidextractablecontentofasampleofactivatedcarbon.Thistestmethodpresupposestheexistenceofsubstancesotherthancarbontobepresentwithactivatedcarbonbutdoesnotpurporttoaddressoridentifythosesubstanceswhichmaybepresent.ThistestmethodshouldbeapplicabletoanyforminwhichactivatedcarbonmayexistandrequirestheperformanceofTestMethodD2866.1.2Thistestmethodrequirestheuseofconcentratedhydrochloricacid,whichshouldbeusedinanappropriateandsafemanner,witheyeprotection,skinprotectionandhandlingcarriedoutinaproperlyoperatingfumehood.TheproperuseofamufflefurnaceisaddressedinTestMethodD2866.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminestheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G49
【国际标准分类号】:73_040
【页数】:2P.;A4
【正文语种】: