The Establishment for The Buildings Energy-efficiency Large System in Sanjiangyuan Area with Analytic Hierarchy Process.docx

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1、TheEstablishmentforTheBuildingsEnergy-efficiencyLargeSysteminSanjiangyuanAreawithAnalyticHierarchyProcessKewords:QinghaiTibetPlateau;Sanjiangyuan;BuildingsEnergy-efficiency;EstablishSystemAbstract:Itisfoundthatatheoreticalsystemforenergy-efficientsolutionsofbuildingsinSanjiangyuanareaisdifficulttoes

2、tablishduetothecomplexityinquantitativeanalysisonsomefactors.Therefore,basedonapreliminaryanalysisonthecomplexnatureofthedecisionmakingprocessofbuildingenergyefficiencyinthree-riversourcearea,andinfluentialfactorsontheissue,itisrecognizedthatAnalyticHierarchyProcess(AHP)isanefficientapproachforanaly

3、zinganddiscussingtheestablishmentofthesystem,andthusaguidelinecanbesetupforsomepilotprojects.!.DefineaHierarchicalStructureOurresearchteamwantstooptimizetheoverallbenefitsofthesolutiontobuildingenergyefficiencyinthree-riversourceareabyanalyzingdifferentalternatives.Thegoalofourstudyistomakeefficient

4、useofcleanenergyandoptimizetheoverallbenefits.Inordertoachievethegoal,thethreemaincriteriaforassessingtheoutcomeshouldbeconsideredareeconomicbenefit,socialbenefitandenvironmentalbenefit,amongwhichenvironmentalbenefitisthemostimportantcriterion.Afterfurtherdiscussion,wethinkthatthethreemaincriteriash

5、ouldbeclassifiedundersomemoredetailedcriteriaincludingdirecteconomicbenefit,indirecteconomicbenefit,energyresources,energywithadvantage,minimizationofpollution,improvementofurbanlandscape,recognitionofresidentsinthearea.Itisassumedthatonlythecriteriamentionedaboveareanalyzed,andwiththesecriteriasome

6、specificalternativesforimprovingbuildingenergyefficiencycanbeproposed.Theresearchprovidestwoalternatives,includingcleanenergy(solarenergyandwindenergy)andinsulationstructure.Itisevidentthatthesetwoalternativesarerelevanttoallthecriteriamentioned,sotheyarefactorsatalternativelevel,thelowestlevelofthe

7、hierarchicalstructure.Thefactorsareputatdifferentlevelsfollowingtheinterrelationshipsbetweenthem,andlinkedbylines.Inordertoassistquantitativeanalysis,fromthetoptothebottomthelevelsaremarkedA GoalwithA,B,C,D,etc.Andfromlefttorightdifferentfactorsaremarkedwith1,2,3,4,etc(Fig.l).Clraa EMrXy(Dl)BCriteri

8、aTbtDtMSBWnaUtoaervc*ir(Dl)CCriteriaDAlternativesFig.1HierarchicalStructure2.ComparisonMatrixandEvaluationofExpertsComparisonMatrixescanbemadebasedonthehierarchicalstructure.Themethodofmakingacomparisonmatrixistoputeachfactorwithsubordinatefactors(criteria)inthetopleftcornerasthefirstfactorinamatrix

9、,anditssubordinatefactorsareputinthefirstlineandthefirstcolumnfollowingtheirnumbers111.Themethodforevaluatingthecriteriaistoconsult13expertsbycorrespondence.Theyareaskedtodeterminethelevelofimportanceofthesefactorsbycomparetheminpairs,andthelevelofimportancescoredfrom1to9(table2-1).Table2-1Scalesofi

10、mportanceScalesofDescriptionimportance135792t4,6,8reciprocalThecomparedtwofactorsareequallyimportantOnefactorisalittlemoreimportantthantheotherOnefactorisobviouslymoreimportantthantheotherOnefactorismuchmoreimportantthantheotherOnefactorisextre三lymoreimportantthantheotherBetweenthescalesaboveIfthera

11、tiobetweenfactoriandfactorjisalj,ratiobetweenfactorjandfactoriisajbequaledtolalj.Afterconsultingexperts,comparisonmatrixescanbemade(table2-2).ABlB2B3Table2-2comparisonmatrixesC5C6BlClC2B2C3C4B3Bl11/31/7Cl11/3C317C515B211/5C21C41C61B31ClDlD2C2DlD2C3DlD2C4DlD2Dl15Dl11/3Dl11/8Dl15D21D21D21D21C5DlD2C6Dl

12、D2Dl11/7Dl11/5D21D213.SingleHierarchicalArrangementandTest(Calculationofweightvector)Accordingtotheresultsofcomparisonmatrixesfromtheexperts,Rankingscanbemadewithsomemathematicmethods.Singlehierarchicalarrangementistocalculatetherelativeweightofeachfactorcomparedwithitscriteria,soitsnatureistocalcul

13、ateweightvectoroInthisresearchsummethodisusedtocalculateweightvectoroSummethodmeansthatinaconsistentcomparisonmatrix,theresultofnormalizationisweightvector,whileinaninconsistentcomparisonmatrix,theresultofnormalizationisalmostequaledtoitsvector,andtheweightisthearithmeticaveragevalueofthevectorofthe

14、totalncolumns.TheequationisasEq.1.7b,Jt=IAftertherankingsforeachlevel,theCOmPariSOnmatrixesshouldbetestedwiththeirlevelofconsistency.AmatrixisIogicallyjustifiedonlyifitpassesthetest,afterwhichtheresultofamatrixcanbeanalyzed.Theproceduresofthetestforevaluatingtheconsistencyareasfollowing121:Step1Calc

15、ulatetheconsistencyindex(C.I.)ofeachmatrix.Eq.2.C. = 2zi-1(2)Step2Findouttherandomindex(R.I.)ofeachmatrixbylookinguptable3-1.Table3-1RandomIndexOrderofMatrix12345678R.I.OO0.580.901.120.241.321.41Orderof9101112131415MatrixR.I.1.451.491.521.541.561.581.59Step3Calculateconsistencyratio(C.R.),basedonwhi

16、ch,makejudgement.Eq.3.(3)IfC.R.0.1,itslevelofconsistencyisunacceptable,andrevisionshouldbemadeinthematrix.Accordingtotheformula(3),theweightvectorandtestresultsobtainedfromthisstudy.showninTable3-2.ASingle(Overall)RankingWeightTable3-2weightvectorandresultsoftestSingleRankingWeightBlSingleRankingWei

17、ghtB2SingleRankingWeightB3Bl0.1412Cl0.4500C30.7500C50.6500B20.4187C20.5500C40.2500C60.3500B30.4401CR0.0000CR0.0000CR0.0000CR0.0000ClSingleRankingVeightC2SingleRankingWeightC3SingleRankingWeightC4SingleRankingWeightDl0.8212Dl0.7500Dl0.1782Dl0.7991D20.1788D20.2500D20.8218D20.2009CR0.0000CR0.0000CR0.00

18、00CR0.0000C5SingleRankingWeightC6SingleRankingWeightDl0.1682D10.2300D20.8318D20.7700CR0.0000CR0.0000Theresultsshowthatalltheconsistencyratiosundersinglehierarchyarrangementarelessthan0.1,whichmeansthatthelevelofconsistencyofeachcomparisonmatrixisacceptable.4.OverallrankingandtestOverallrankingaimsat

19、workingouttheweightofeachfactorversusthefactorsatLevelA(Goal).Thecalculationstartsfromthetoptothebottom.TheequationtocalculatetheweightoffactorsoflevelkversusthegoalisasEq.4(Jl)Skjt-wi=pijwj7=1i=l,2,.,11(4).Theoverallrankingresultalsoshouldbetestedforthelevelofconsistency.TheequationisasEq.5.,(人)(5)

20、K.l.IfC.R.(k)0.1,Thelevelofconsistencyofthecomparisonmatrixisacceptable.Afterconsideringtheinfluencefactorofthenumberofexperts,theoverallrankingresultandconsistencytestresultofthisresearchcanbefoundintable3-3andtable3-4.Table3-3OverallRankingofLevelC(CR=0.0000)ClC2C3C4C5C60.04120.04630.35250.10810.3

21、5110.1008Table3-4OVeraIlRankingOfLeVelD(CR=0.0000)DlD20. 35120.6488ItisevidentthattheC.R.0.1.Therefore,theoverallconsistencyofthesecomparisonmatrixesisacceptable.5.Conclusion5.1 ThesolutioncanbefoundbyanalyzingtheresultsofrankingsoAccordingtotheresultsofrankingsoflevelD(Alternatives),theweightofclea

22、nenergy(D2)(0.6488)ismuchhigherthantheweightofthedesignofinsulationstructureofbuildings(Dl)(0.3512).Therefore,accordingtothecommonviewoftheexperts,theuseofcleanenergyshouldbethefinalsolutionforimprovingbuildingenergyefficiencyinthree-riversourcearea.5.2 DecisionmakinganalysisComparingthethreefactors

23、inlevelB(Criteria),theweightofeconomicbenefit(Bl)isthelowest(0.1412),followingsocialbenefit(B2)andenvironmentalbenefit(B3)(0.4187and0.4401).Itmeansthatsocialbenefitandenvironmentalbenefit,especiallythelatterone,aremoreemphasized.Comparingthefactorsundereconomicbenefit,forbothdirecteconomicbenefit(Cl

24、)andindirecteconomicbenefit(C2),theweightofcleanenergyismuchhigherthanthatofthedesignofinsulationstructureundersinglehierarchicalarrangement.Inaddition,forthreeofthefourfactorsundersocialbenefitandenvironmentalbenefit,theweightofthecleanenergyisalsomuchhigherthanthatofthedesignofinsulationstructureu

25、ndersinglehierarchicalarrangement.Therefore,duetomorecontributiontosocialbenefitandenvironmentalbenefit,cleanenergyiswithmoresignificantweight.AccordingtotherankingresultofLevelC(Criteria),protectiononthree-riversourcearea(C3is0.3525)andalleviationofpollution(C5is0.3511)arealmostsame,andforeachofthe

26、criterion,theweightofcleanenergyismuchhigherthanthatofinsulationstructure.Inconclusion,accordingtotheanalysisabove,socialbenefitandenvironmentalbenefit,ratherthaneconomicbenefit,aremoreemphasizedinthisdecisionmakingprocess.Furthermore,twofactorsincludingprotectiononSanjiangyuanareaandalleviationofpo

27、llutionareputhigherpriority,andforbothofthem,cleanenergyisthebetteralternative.Therefore,itisjustifiedthattheutilizationofcleanenergyisanefficientapproachforenergy-efficientsolutionforbuildingsinSanjiangyuanarea.AcknowledgementsThisworkwasfinanciallysupportedbyScienceandtechnologyprojectofQinghaiPro

28、vinceTheUtilizationofCleanEnergyinEnergy-efficiencysolutionsforBuildingsinSanjiangyuanArea(2010-N-SOJ),ChinaScienceandtechnologysupportprogramproject,Integrationdemonstrationofplateauecologicalcommunityplanningandgreenbuildingtechnology(subjectnumber:2013BAJ03B03-01)References1 DENGXue,etal.AnalysisandApplicationoftheMethodofAnalyticHierarchyPwcessMathematicsinPracticeandTheoryVol.42(Apr.2012),p.94-952 SUNChengxun,etal.,TTzeApplicationoftheAnalyticHierarchyprocessontheComprehensiveEvaluationofManagementLevel,JournalofIndustrialTecnoloygicalEconomics,No9(Sep.2013),p.75-76

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