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1、LeanEnergyAuditsLeanEnergyAuditsRethinkingCommonManagementPracticesofMulti-BuildingEnergyAuditsAdamF.Knapp,I.E.,C.E.M.C&SEngineersSyracuse,N.Y.IntheirgroundbreakingbookLeanThinking,JamesP.WomackandDanielT.Jonesoutlinedtheleanmanufacturingprocessthatsignificantlyimpactedthe
2、manufacturingworld.Thebookdenouncedaswastefulthetraditionalmanufacturingmethodofbatchprocessinginwhicheachpieceofanassemblywasmadeoneatatimeandthenlaterassembledasawhole.Thisrevolutionaryconceptofleanprocessesisn’texclusivetothemanufacturingrealm.Therearevaluablelessonsabo
3、utstreamliningandreducingwastedeffortthatcanbeappliedtomanytypesofprocesses.Asenergyefficiencyconsciousnessgrows,energyauditsarebecomingmorecommonpractice.Increasingly,theprivateandpublicsectorsareturningtoenergyprofessionalstoperformlarge-scale,multi-buildingenergyaudits.
4、Traditionally,theseauditsaresimilartoabatchmanufacturingprocessinthatahostofmeasurementsaretakenacrossallofthebuildingsandthenvariousanalysesareperformedwiththesemeasurements.Whilethismethodistheoreticallysound,inpracticeitcanbeespeciallycomplicated—particularlyonmulti-bui
5、ldingcampuses.Byapplying“lean”principles,traditionalbatchstyleenergyauditscanbeturnedinto“leanenergyaudits.”Leanauditinghasfourdistinctadvantagesovertraditionalenergyauditmanagementmethods:thepropagationoferrorsisavoided,energysavingscanberealizedearlierbyreducingworkinpro
6、gress(WIP),projectmanagementcontrolcanbeincreasedthroughbettermetrics,andsystems-levelunderstandingcanbeincreasedbynarrowingefforts.ThebatchandleanenergyauditprocessesareoutlinedinFigure1andFigure2,respectively.AvoidingpropagationoferrorsIntraditionalmanufacturing,ifaparti
7、cularproductrequiresthreedistinctmanufacturingprocesses,itiscommontoperformsteponeonallofthedesiredpieces1of5LeanEnergyAuditsthensteptwo,thenstepthree.This“batchprocessing”methodcanleadtomanyproblems.Forexample,ifamistakeismadeinprocessA,itwillberepeatedonallofthepiecesbef
8、orebeingcaughtinprocessBorC—wastingthepartiallyfinishedunitsandthetimeassociatedwithmanuf
