简介:Asthemainorganicpollutantinmunicipallivingwaste,kitchenwastecausessecondarypollutioninthecourseofitsbeinggatheredandtransportedtothelandfillbymixingwithotherrefuseandbydecomposition.Thismakespollutionpreventionmoredifficultandraisesthecostoflandfillengineering.However,theamountofsolidwastetobetreatedcanbedecreasedandsuchpollutionburdenlessenedbydisposingofthesolidwasteinlocalmunicipalareas.TheprograminBeijingalsoshowsthatthisworkswellwithoursituationinChinaandcanacceleratemarketizationandpublicparticipation.
简介:ThestatisticdataofresidentialelectricityconsumptionshowninthetableP.58arequotedfromtheEnergyStatisticalYearBookpublishedbytheNationalStatisticBureauandthestatisticsissuedbytheMinistryofEnergy.Thereasonofthedifferencesbetweenthedatafromthetwosaidsourcesisthatthelatterdoesnotincludetheconsumptionsup-pliedbythelocalsmallpowersources.Fromthestatisticaldatawecanseethat:
简介:Thoughthemethodofcitizenparticipationinurbanplanningisquitewellestablished,foraspecificsegmentofresidentialenvironment,however,existingparticipationsystemhasnotcopedadequatelywiththeissue.Thespecificresidentialenvironmenthasdetailedaspectsthatneedpositiveandhighlevelinvolvementofthecitizensinparticipatinginallstagesandeveryfieldoftheplan.Oneofthebestandsystematicmethodstoobtainamoreinvolvedcitizenisthroughacitizenworkshop.Togetamore'educated'citizenwhoparticipatesintheworkshop,aspecialsessiontoinformthecitizenonwhatwaspreviouslygatheredthroughasurveywasrevealedtobeprerequisitebeforetheworkshop.Thecomputersupportsystemisoneofthebesttoolsforthispurpose.Thispaperdescribesthedevelopmentofthecomputersupportsystemforresidentialenvironmentevaluationsystem,whichisanessentialtooltogivemoreinformationtothecitizensbeforetheirparticipationinpublicworkshop.Thesignificantcontributionofthispaperistheeducationalsystemframeworkinvolvedintheworkshoponthepublicparticipationsystemthroughcomputersupport,especiallyforresidentialenvironment.Theframework,developmentandapplicationofthecomputersupportsystemaredescribed.Theapplicationofaworkshoponthecomputersupportsystemwascommentedonasveryvaluableandhelpfulbytheaudienceasitresultedingreaterbenefittohavewiderrangeofparticipation,anddeeperlevelofcitizenunderstanding.
简介:OnWednesday,Chinaannouncedadjustmentsforthepricesofnon-residentialpowerandthermalcoalinordertoeasepowershortagesandreducefinancialpressureonpowercompanies.TheNationalDevelopmentandReformCommission(NDRC)announcedthatitwillraisetheretailpriceof
简介:Thedemandforpotablewaterisrisingrapidlyduetoanever-increasingpopulation,economicactivities,anddwindlingwatersupplies.Toprovideadequatewatersuppliesinthefuture,understandingtheissuesandchallengesinthereuseofwateranddevelopingappropriatestrategiesforreusewillbecritical.Onewaytoaugmentwatersuppliesforresidentialuseistoreusegraywater-thewastewaterfromkitchens,bathrooms,andlaundries.Inthisarticle,wecriticallyreviewtheevolutionofwaterreuse,thedefinitionofgraywater,graywaterreusepractices,volumesandflowindifferentsituations,andgraywatercharacteristics.Wethenexaminetheissuesassociatedwithdifferentgraywatertreatmentmethodsandhowusinggraywaterforirrigationaroundhomesaffectssoilqualityandplantgrowth.Thestudyconcludesthatgraywatertreatmentcosts,humanhealthrisks,anditseffectonsoilqualityaresomeofthechallengesthatneedtobeaddressedinthefutureforwidespreadandsustainablereuseofgraywaterforirrigationaroundhomes.
简介:Thispaperpresentedacontroldesignmethodologyforaprotonexchangemembranefuelcell(PEMFC)generationsystemforresidentialapplications.Thedynamicbehaviorofthegenerationsystemiscomplexinsuchapplications.Acomprehensivecontroldesignisveryimportantforachievingasteadysystemoperationandefficiency.Thecontrolstrategyfora60kWgenerationsystemwasproposedandtestedbasedonthesystemdynamicmodel.Atwo-variablesingleneuronproportional-integral(PI)decouplingcontrollerwasdevelopedforanodepressureandhumiditybyadjustingthehydrogenflowandwaterinjection.Asimilarcontrollerwasdevelopedforcathodepressureandhumiditybyadjustingtheexhaustflowandwaterinjection.Thedesiredoxygenexcessratiowaskeptbyafeedbackcontrollerbasedontheloadcurrent.Anoptimalseekingcontrollerwasusedtotracetheuniqueoptimalpowerpoint.TwonegativefeedbackcontrollerswereusedtoprovideACpowerandasuitablevoltageforresidentialloadsbyapowerconditioningunit.Controlsimulationtestsshowedthat60kWPEMFCgenerationsystemrespondedwellforcomputer-simulatedstepchangesintheloadpowerdemand.Thiscontrolmethodologyfora60kWPEMFCgenerationsystemwouldbeacompetitivesolutionforsystemleveldesignssuchasparameterdesign,performanceanalysis,andonlineoptimization.
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简介:Naturalhazardssuchashurricanesmaycauseextensiveeconomiclossesandsocialdisruptionforcivilstructuresandinfrastructuresincoastalareas,implyingtheimportanceofunderstandingtheconstructionperformancesubjectedtohurricanesandassessingthehurricanedamagesproperly.Theintensityandfrequencyofhurricaneshavebeenreportedtochangewithtimeduetothepotentialimpactofclimatechange.Inthispaper,aprobability-basedmodelofhurricanedamageassessmentforcoastalconstructionsisproposedtakingintoaccountthenon-stationarityinhurricaneintensityandfrequency.Thenon-homogeneousPoissonprocessisemployedtomodelthenon-stationarityinhurricaneoccurrencewhilethenon-stationarityinhurricaneintensityisreflectedbythetime-variantstatisticalparameters(e.g.,meanvalueand/orstandarddeviation),withwhichthemeanvalueandvariationofthecumulativehurricanedamageareevaluatedexplicitly.TheMiami-DadeCounty,Florida,USA,ischosentoillustratethehurricanedamageassessmentmethodproposedinthispaper.Theroleofnon-stationarityinhurricaneintensityandoccurrencerateduetoclimatechangeinhurricanedamageisinvestigatedusingsomerepresentativechangingpatternsofhurricaneparameters.
简介:Thisstudyaimstoinvestigateplumbingdoityourself(DIY)materialsfordevelopmentandpracticalissuesinatownshipofSouthernTaiwanandtoexploretheteachingprocessinvolvedforadultstudentplumbingcourses.Furthermore,innovativeteachingstrategieshavebeenassessedaswell.Theresearchwasbasedonthelearningprogressof22adultstudentstakingplumbingDIYcourses,heldbyPingtungTownshipPublicLibrary.Aftereightweeksofcoursework,satisfactionquestionnairesandopen-endedquestionswereusedtoexploretheirsatisfaction.Thestudyfindingsaccountforvariousarrangementsoftheworkshop,theteachingprocesses,andrelatedstrategies.Theplumbingcoursesincluderepairandreplacementoflights,switchsockets,simpleunclogging,etc.Throughillustration,demonstration,hands-onoperation,andinteractivemedia,adultstudents’learningandinterestswereimproved.Thecourseandmaterialswerehighlypraisedbyadultstudents;theyallplannedtotakeadvancedcoursesinthenearfuture.
简介:Thisresearchisaimedtodevelopaconsumerdemandingsideresponsemodeltoassistelectricityconsumerstomitigatepeakdemandsduringthepeakseason.Themaincontributionofthisresearchisshowingthatconsumerscanmitigatepeakdemandsbyoptimizingenergycostsofanairconditioner(AC)whenaspikehappens.Itmayonlyoccurinaoneandahalfhoursspikeduringthepeakseason.ThismodelalsoinvestigateshowACappliesthepre-coolingmethodwhenthereisasubstantialriskofapricespike.Theresultsindicatethatthepotentialbenefitofthemodelisachievingenergysavingsforconsumersandaggregators,alsoreducingelectricitybillsfortheconsumers.Themodelistestedwithselectedcharacteristicsoftheroom,andbasedonthestandardroominaresidentialhouseinMakassar,acityofIndonesia.
简介:在一个城市的森林地点(Namsan)和在汉城的一个城市的居住区域(Boramae)上的CO2集中和流动,朝鲜在非成长的季节(2011年3月24日)期间,成长季节(10122011年6月),并且迟了成长的季节(22242011年9月)被分析。二个地点的CO2集中将近显示出一样日报变化与发生在夜里期间的最大的价值和发生在白天,以及一样的季节的变化期间的最小的价值,在成长季节(夏天)期间在非成长的季节(早春)和最小的价值期间与最大值珍视。在城市的森林上的CO2流动没显示出任何东西典型日报变化在非成长的季节期间,但是确实出现了日报有小积极价值的变化在夜里和大否定价值期间在在在城市的森林里由于光合作用成长和迟了成长的季节的白天期间。在城市的居住区域上的CO2流动为所有时期显示出积极每天吝啬的价值,与在非成长的季节期间的大价值和在成长季节期间的小价值,并且它也出现了日报有在06001000LST和18002400LST的二最大值的变化,并且在0300-0600LST和1100-1500LST的二最小,并且强烈为由包围房子煮并且加热与液化天然气的使用被相关。
简介:Thispaperpresentsthedesignandimplementationofanenergymanagementsystem(EMS)withwavelettransformandfuzzycontrolforaresidentialmicro-grid.Thehybridsysteminthispaperconsistsofawindturbinegenerator,photovoltaic(PV)panels,anelectricvehicle(EV),andasupercapacitor(SC),whichisabletoconnectordisconnecttothemaingrid.Thecontrolstrategyisresponsibleforcompensatingthedifferencebetweenthegeneratedpowerbythewindandsolargeneratorsandthedemandedpowerbytheloads.Wavelettransformdecomposesthepowerdifferenceintoasmoothedcomponentandafastfluctuatedcomponent.Thecommandapproachusedforfuzzylogicrulesconsidersthestateofcharging(SOC)ofEV,renewableproduction,andtheloaddemandasparameters.Furthermore,thecommandrulesaredevelopedinordertoensureareliablegridwhentakingintoaccounttheEVbatteryprotectiontodecidetheoutputpoweroftheEV.ThemodelofthehybridsystemisdevelopedindetailunderMatlab/Simulinksoftwareenvironment.
简介:ResidentialwateruseisgraduallybecomingthefocusinChina'smunicipalwatersupplyplanningandmanagementinrecentyears.Littleisknown,however,abouttheresidentialwateruseinmodemChinaduetothetransitionofeconomyandenhancementofmanagementonwaterconservation.InordertobetterunderstandthecharacteristicsofresidentialwateruseinNorthChina,amodelforidentifyingthedeterminantsofresidentialwaterusewasestablishedandanalyzedbyusingpaneldataandcross-sectiondatamethodologies.ThenTaiyuancity,thecapitalcityofShanxiProvinceinNorthernChinawasselectedasacasestudy.Boththeanalysesandfieldinvestigationindicatethattherelativelyslowincreaseofresidentialwateruseinrecentyearsmayresultfromtheimplementationofstrictlawsandregulationsonwaterconservation.Andthroughtheinvestigation,first-handinformationaboutwaterconsumptionpattern,waterreuse/conservation,people'sattitudetowardwaterquantityandquality,etc.havebeenobtained.
简介:ImprovingtherurallivingenvironmentinruralChinaisoneofthekeytasksforthecountrytoaccomplishitsgoalofbuildingamoderatelyprosperoussocietyby2020.Yunnanhashighlyfocusedonthetaskofthetreatmentofresidentialdomesticsewageandhouseholdgarbageinruralarea.ManyeffortsandresourceshavebeenputintothisfieldinYunnansince2016.Progresshasbeenmadetoincreasethecoveragerateofthesewageandhouseholdgarbagetreatmentfacilities.Seventy-fivepercentoftotaladministrativevillageshavebuiltupgarbagetransportationsystemandtreatmentfacilities.Sixty-threepercentoftownshavecollectedandtreatedtheresidentialdomesticsewagebyconstructingvariousscalesewagetreatmentstations.However,thelackofthelong-actingoperationmechanismandtheimperfectionofthechargerulesforthesewageandgarbagetreatmentfacilitieshavebecomeproblemsthatwouldhindertheachievingoftheenvironmentalgoalsinYunnan.Thereasonswereelaboratedonthebasisofthelocalactualsituations.Therefore,itissignificanttoimprovethechargerulesandframethelong-actingoperationmechanismbystrengtheningthegovernancecapacity,frameanoverallmechanismandencouragethemasstobeinvolvedintheimprovementsofthelivingenvironmentinruralYunnan.