简介:Thecoolingandheatingloaddistributionoflargeareaair-conditionedroomsuchas'open'offices,shoppingmallsandwaitingroomsisusuallyassumedtobeeveninairconditioningsystemdesign.However,itisnotthecaseinreality,andalowefficientairconditioningsystemresultsfromthisassumption.AsimulationandanalysisofthecoolingloaddistributionofanofficebuildinginHongKongwithTRANSYSsoftwareisprovidedinthispaper.Atypicalofficeisdividedinto13zonesforsimulation,includingexternalzone,medialzoneandinternalzoneinthenorth,thesouth,theeastandthewestrespectivelyandacentralzone,insteadof4directionalzone.Theresultshowsthereismuchcoolingloaddifferencebetweeneachzone,andmoreattentionshouldbepaidtounevenindoorcoolingandheatingloaddistributiontofurtherguidethedesign.
简介:以便评估水分发系统的地震可靠性并且相应地做康复决定,估计管道损坏状态并且基于管子漏模型进行功能的分析是必要的。当地震发生了时,水分发系统不停地与漏服务。由与漏在管道的中心增加一个虚拟节点,压力驱动的分析的一条有效途径为模仿许多低相对情形被开发,并且一个水力的漏模型也被造与地震损坏执行水供应网络的水力的分析。然后,mean-first-order-second-moment方法被用来分析水分发系统的地震有用性。根据评价分析,被破坏或突现地在重漏被孤立并且修理的管子,它改进了水供应网络的能力并且将为提高系统的地震可靠性组成基础。水分发系统上的地震可靠性和康复决定分析的建议途径被表明通过案例研究有效。
简介:在这份报纸,环境扫描电子显微镜学(ESEM)被用于描绘矿物质和处理残余(COPR)的铬铁矿矿石的元素分发。测试结果证明忍受Crbrownmillerite发生在COPR粒子的边界,当有在它的结构的Cr(VI)的hydroandradite在内介绍COPR粒子时。方镁石和方解石发生在空隙的区域。Ca,Fe和艾尔在整个COPR粒子是分布式的元素分析表演,和Mg主要在空隙的区域或在粒子表面上存在。Cr的一个更低的内容在COPR粒子是均匀地分布式的,当Cr的稍微更高的集中发生在粒子内时。让Cr从COPR移居将花一相对更长的时间,这被建议,特别为hexavalent铬,因此沥滤的时间和粒子尺寸可以是影响Cr(VI)的版本的二个重要因素。
简介:一个专业化电气化学的测量房间被插进一个飞行员水分发系统模仿管子内部墙的腐蚀。线性polarisation抵抗(LPR)技术和电气化学的阻抗光谱学(EIS)在实时被测量学习腐蚀率(CR)和生铁的规模的变化。三个腐蚀阶段根据LPR分析被观察:有显著地波动的CR的一个起始的阶段,有慢慢地减少的CR的一个发展阶段,并且有约0.1575公里的低CR的一个稳定的阶段?晡整?潖摮镲??鲹秪琀牥獩楴?畣癲?湡污獹獥?敒?瑬?桔?敲畣牲湥散朠潲灵攠桸扩瑩摥猠杩楮楦慣瑮祬栠杩敨??楤敭?倨??????湡???倨???????敬敶獬愠摮愠琠敲摮琠睯牡?楨桧牥瀠慬整敬?敬敶獬???????桔?灯楴慭?畣潴晦瘠污敵?敷敲ㄠ??e并且衰退emission-to-output比率在动态综合气候经济模型,描述了投射的碳排放是有艾尔2包含锡的O3-MgO-TiOx核心被发现是??
简介:ThewaterdistributionsystemofoneresidentialdistrictinTianjinistakenasanexampletoanalyzethechangesofwaterquality.Partialleastsquares(PLS)regressionmodel,inwhichtheturbidityandFeareregardedascontrolobjectives,isusedtoestablishthestatisticalmodel.TheexperimentalresultsindicatethatthePLSregressionmodelhasgoodpredictedresultsofwaterqualitycomparedwiththemonitoreddata.Thepercentagesofabsoluterelativeerror(below15%,20%,30%)are44.4%,66.7%,100%(turbidity)and33.3%,44.4%,77.8%(Fe)onthe4thsamplingpoint;77.8%,88.9%,88.9%(turbidity)and44.4%,55.6%,66.7%(Fe)onthe5thsamplingpoint.
简介:Thedistributionperformanceofthegravity-typeliquiddistributor(GTLD)significantlyaffectscolumnoperationefficiencyandtheconsequentproductquality.Inindustrialsettings,maldistributionisnormallyconsideredtobecausedbyverticalpositionalorcoplanarityerrorsstemmingfromdeflectionsassociatedwithmanufactureandinstallation,orevenbyexcessiveweight.Thelackofestimationprotocolsorstandardsimpedesthedescriptionofthiserror,whichinfluencesthecorrespondingoutflowrates.Giventhissituation,thepaperproposesalumpedparameter,orificepositiondeviation(OPD),tofacilitatethecalculationoftherelativedischargerateerror(RDRE)basedonaformuladerivation,whichallowsthesystematicanalysisoftheinfluenceofasingleorificeorweirOPD.ThepaperintroducesasensitivityfactorKasaconciseandunifiedexpressionintheoreticalRDREsforcalibratingtheinfluenceofOPDontheRDREsofgeometricallydifferentorificesandweirs.WithrespecttotheGTLD,alargerKindicatestheneedformorestrictOPDrequirements.ThepaperverifiesthattheextentofGTLDoutflownonuniformityisassociatedwithdivergingtendenciesregardingitsmorphology,especiallyintheorificeandweir,whichcanbedeterminedusingourproposedprocedures.