简介：Itisproposedthatdoublelevelprogrammingtechniquemaybeadoptedinsynthesisstrategy.Optimizationofheatexchangernetworkstructuralconfiguration(themasterproblem)maybesolvedattheupperlevel,leavingtherestoperatingconditions(theslaveproblem)beingoptimizedatthelowerlevel.Withtheuniquenessinmind,anHENsynthesisexpertsystemmaybeemployedtoaddressboththelogicalconstraintsandtheglobaloperationparameters′optimizationusingenhancedsequentialnumberoptimizationtheory.Casestudiesdemonstratethatthesynthesisstrategyproposedcaneffectivelysimplifyboththeproblem-solvingandthesynthesisprocess.Thevalidityofthestrategyrecommendedisevidencedbycasestudies′resultscompared.

简介：聚氯乙烯上的一个预研项目空纤维ultrafiltrationmembrane过程为对待表面水被进行。膜系统在不同常数下面在thedead结束过滤模式被操作渗入流动。结果证明优化操作(transmembrane压力≤0.1MPa，过滤时间≤30min)与水力的清洗(30s)并且化学清洗(30min，吗清洗的化学药品在过滤的16个周期以后被执行)保证相当稳定的流动(1100L/(m~2吗？h？MPa))并且好渗入质量(混浊<0。1NTU)。照原尺寸的植物能被建议与常数的混合策略操作渗入流动模式(transmembrane压力≤0.1MPa)并且constanttransmembrane压力模式。当未加工的水的温度下面成为5℃时，一个constanttransmembrane压力模式应该被使用；否则一个常数渗入流动模式(transmembranepressure≤0.1MPa)能被操作。这样，极端过滤膜的不可逆的犯规能被最小化保留稳定的流动并且使膜的生活更长。

简介：Inthispaper,theproblemofParameterestimationinlineardelayedsystemsfromsampleddataistreated.Usingnumericalintegraloperation(NIO),anidentificationmodelwhichisparametrizeddirectlyinthelineardelayedsystempa-rametersisgot.Withtheleastsquare(LS)methodortheinstrumentalvariable(Ⅳ)method,therecursivealgorithmofparameterestimationisgiven.Theresultoftheillustratedexampleshowsthatthisalgorithmissimple,rapidandaccurrate.

简介：Anairsourceheatpumpsystem(ASHPS)usedinanofficebuildingissetupandstudiedexperimentally.Itsoperatingperformanceinwinterisevaluatedbasedontestdataandacomparativediscussionisgivenontheeffectofclimateconditionsandheatingloadratioontheoperationbehavior.Thenheatingcapacityvariationcausedbyevaporatorfrostingisanalyzedaswell.Finally,thedefrostingparametersandthetechnicalfeasibilityarestudiedforaconstantheatingdemand.TheexperimentalresultsindicatethatboththeoutletwatertemperaturedropandthesystemCOPshouldbetakenintoaccountwhensettingdefrostingparameters,andASHPSisaviabletechnologyforspaceheatingandhot-waterproductioninwinterinTianjin,whichcanmaintaintheroomtemperatureabove19℃whentheoutdoortemperatureis-2℃.