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外文翻译--洗碗机和洗衣机加热热水循环回路【优秀-带出处】.doc

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外文翻译--洗碗机和洗衣机加热热水循环回路【优秀-带出处】.doc

毕业设计(论文)相关资料题目灌装生产线上灌装阀的设计信机系机械工程及自动化专业学号学生姓名指导教师(职称副教授)(职称)2012年5月25日英文原文DISHWASHERANDWASHINGMACHINEHEATEDBYAHOTWATERCIRCULATIONLOOPTOMASPERSSONSOLARENERGYRESEARCHCENTERSERC,HOGSKOLANDALARNA,78188BORLANGE,SWEDENRECEIVED14NOVEMBER2005;ACCEPTED6MAY2006AVAILABLEONLINE30JUNE2006ABSTRACTELECTRICENERGY70–90USEDBYELECTRICALLYHEATEDDISHWASHERSANDWASHINGMACHINESISUSEDFORHEATINGTHEWATER,THECROCKERY,THELAUNDRYANDTHEMACHINEANDCOULDASWELLBEREPLACEDBYHEATFROMOTHERSOURCESTHANELECTRICITYTHISARTICLEEVALUATESPROTOTYPESOFADISHWASHERANDAWASHINGMACHINE,WHERETHEMACHINESAREHEATEDBYAHOTWATERCIRCULATIONLOOPANDTHEHEATISTRANSFERREDTOTHEMACHINESVIAAHEATEXCHANGERTHEMACHINETHEREFOREUSESWATERFROMTHECOLDWATERPIPEMEASUREMENTSANDSIMULATIONSHAVEBEENPERFORMEDSHOWINGTHATALLENERGYFORHEATINGCANBEREPLACEDIFTHESUPPLYWATERTEMPERATUREIS65–70_CANALTERNATIVEANDCOMMONWAYTOSAVEELECTRICITYISTOCONNECTTHEMACHINESTOTHEDOMESTICHOTWATERPIPE,BUTTHEELECTRICALSAVINGSWITHTHISMEASUREAREMUCHSMALLER,ESPECIALLYFORTHEDISHWASHERCOMPUTERMODELLINGHASBEENPERFORMEDANDTHEMODELHASPROVEDTOHAVEAHIGHAGREEMENTWITHMEASUREDDATAHOWEVERCOMPARISONWITHMANUFACTURERS’DATAINDICATESTHATTHECOMPUTERMODELSOVERESTIMATETHEENERGYDEMANDBYABOUT102006ELSEVIERLTDALLRIGHTSRESERVEDKEYWORDSDISHWASHER;CLOTHESWASHER;WASHINGMACHINE;DOMESTICAPPLIANCES;HEATEXCHANGER1INTRODUCTIONINORDERTOSAVEELECTRICITYFORDISHWASHERSANDWASHINGMACHINESITISCOMMONTOCONNECTTHEMTOTHEHOTWATERPIPEHOTWATERFEDMACHINESASMODERNMACHINESUSEVERYLITTLEWATERTHEHEATINGOFTHECROCKERY/CLOTHESANDTHEMACHINEITSELFREQUIREALARGEPARTOFTHEELECTRICITYFORHEATINGTHUSNOTALLELECTRICITYFORHEATINGCANBEREPLACEDBYHOTWATERFEDMACHINESINADDITIONTHEWASHINGPERFORMANCEWILLBEWORSEBECAUSEALBUMINOIDALSUBSTANCESAREBETTERREMOVEDINCOLDWATER8INTHISARTICLEPROTOTYPESAREMEASUREDANDSIMULATIONMODELSAREDEVELOPEDANDVERIFIEDFORADISHWASHERANDAWASHINGMACHINECONNECTEDTOTHECOLDWATERPIPETHATISHEATEDBYACIRCULATINGHOTWATERCIRCUITVIAAHEATEXCHANGERBUILTINTOTHEMACHINEHEATFEDMACHINESPROTOTYPESOFAWASHINGMACHINEANDATUMBLEDRYERWHERETHEHEATISTRANSFERREDTOTHEMACHINEBYACIRCULATINGHOTWATERCIRCUITANDAHEATEXCHANGERBUILTINTHEMACHINEHAVEBEENDEVELOPEDANDEVALUATEDBY18THEWASHINGMACHINEHASATUBEHEATEXCHANGERBUILTINTHEBOTTOMOFTHEWASHDRUMACCORDINGTOFIELDTESTSBY18THEELECTRICITYDEMANDFORTHEWASHINGMACHINECOULDBEBROUGHTDOWNFROM378MJCONVENTIONALTO083MJFORONECYCLE,HOWEVERTHETUBEPACKETINCREASEDTHEWATERCONSUMPTIONANDTHEREBYTHEENERGYDEMANDFORHEATINGTHEMACHINESUSEDINTHISSTUDYAREEQUIPPEDWITHAPIPEINPIPEHEATEXCHANGERANDDOESNOTNEEDANYEXTRAWATERACCORDINGTO8AMODERNDISHWASHERUSE378MJ105KWHPERCYCLE,WHERE333MJ0924KWHISELECTRICITYFORHEATINGAWASHINGMACHINEON60_CUSE342MJ095KWH,WHERE274MJ076KWHISELECTRICITYFORHEATINGACCORDINGTOTHEENERGYDECLARATIONBY12,ADISHWASHERISASSUMEDTOBEUSED220TIMES/YRANDAWASHINGMACHINE200TIMES/YR11,THUSTHEANNUALELECTRICITYDEMANDFORTHEDISHWASHERANDTHEWASHINGMACHINEIS1516MJWHERE1280MJISUSEDFORHEATINGINSWEDEN,FOREXAMPLE,WITH9MILLIONINHABITANTSTHEREARE13MILLIONDISHWASHERSAND21MILLIONWASHINGMACHINESINHOUSEHOLDS9WITHTHEFIGURESABOVETHETOTALUSEOFELECTRICITYFORHEATINGWOULDBE25PJ07TWHCORRESPONDINGTO05OFTHETOTALELECTRICITYUSEDINSWEDEN16INAUSTRIAWITH8MILLIONINHABITANTSTHEDISHWASHERSANDTHEWASHINGMACHINESAREESTIMATEDTOUSEIN11TWHIN199972THEPROTOTYPES21THEDISHWASHERADISHWASHERFORHOUSEHOLDSCYLINDADW201WASREBUILTACCORDINGTOFIG1THEHEATEXCHANGERFIG2ISAPIPEINPIPEHEATEXCHANGERMADEFROMANINTERNALCOPPERPIPEOF22MMANDANEXTERNALCOPPERPIPEWITHDIAMETER28MMTHEPIPEGOINGTOTHEUPPERSPRAYARMISREPLACEDBYTHEHEATEXCHANGERANDTHEWASHINGWATERISPUMPEDTHROUGHTHEINNERPIPEOFTHEHEATEXCHANGERTHEFLOWRATEINTHEINTERNALPIPEISHIGHROUGHLY06KG/STHEHOTWATERFROMTHEHEATINGCIRCUITWITHAFLOWRATEOFROUGHLY003KG/SFLOWSINTHEGAPBETWEENTHEINNERANDTHEOUTERPIPESINTHEHEATEXCHANGERTOMAXIMISETHEHEATTRANSFERANDTOKEEPTHEINNERPIPECENTRED,WHENTHEHEATEXCHANGERISBENT,A15MMCOPPERWIREWASWOUNDROUNDTHEINNERPIPEFIG2THELENGTHOFTHEHEATEXCHANGERWAS147MTHECONTROLSTRATEGYWASMODIFIEDSOWHENTHEMACHINECALLEDFORHEATTHEHOTTHESOLENOIDVALVESV1,FIG1OPENEDANDWATERFROMABUFFERSTORAGETANKSTARTEDTOCIRCULATETHROUGHTHEHEATEXCHANGERWHENTHETEMPERATUREINTHEBUFFERSTORAGETANKWAS5_CWARMERTHANTHEWATERINTHEDISHWASHER,THECIRCULATIONSTOPPEDANDTHEELECTRICFIG1OUTLINEDIAGRAMOFTHEDISHWASHERANDWASHINGMACHINEPROTOTYPESINTHEDISHWASHERTHEPIPEGOINGTOTHEUPPERSPRAYARMISREPLACEDBYTHEHEATEXCHANGERINTHEWASHINGMACHINEANEWPUMPP2PUMPSTHEWASHWATERTHROUGHTHEHEATEXCHANGERTWOEXISTINGCONNECTIONSWEREUSEDTOCONNECTTHEHEATEXCHANGERTOTHEWASHDRUMTHEHOTWATERFLOWRATEDURINGTHEHEATINGPHASESISCONTROLLEDBYTHESOLENOIDVALVESSV1ANDSV2NOMENCLATUREEWRELATIVEERRORINTRANSFERREDENERGYTHROUGHTHEMOTORORTHEHEATEXCHANGEREPRELATIVEERRORINTRANSFERREDHEATRATETHROUGHTHEHEATEXCHANGERPPOWER,HEATRATEWPMMEASUREDHEATRATETHROUGHTHEHEATEXCHANGERWPCCALCULATEDHEATRATETHROUGHTHEHEATEXCHANGERWTTIME,TIMEFORTHEWASHINGSEQUENCESTTEMPERATUREK,_CTDHWDOMESTICHOTWATERTEMPERATUREK,_CTFLOWFLOWTEMPERATURESUPPLYWATERTEMPERATUREK,_CWENERGYJWCCALCULATEDTRANSFERREDENERGYTHROUGHTHEHEATEXCHANGERJWMMEASUREDTRANSFERREDENERGYTHROUGHTHEHEATEXCHANGERJHOTWATERFROMTHEHEATSOURCEHOTWATERRETURNWASHWATERFR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