百威酒店建筑给水排水工程设计外文翻译.doc
- 文档编号:30579286
- 上传时间:2023-08-17
- 格式:DOC
- 页数:18
- 大小:155KB
百威酒店建筑给水排水工程设计外文翻译.doc
《百威酒店建筑给水排水工程设计外文翻译.doc》由会员分享,可在线阅读,更多相关《百威酒店建筑给水排水工程设计外文翻译.doc(18页珍藏版)》请在冰豆网上搜索。
CHANGCHUNINSTITUTEOFTECHNOLOGY
Energyefficiencyperformanceofmulti-energydistrictheatingandhotwatersupplysystem
资料来源:
SchoolofEnvironmentalScienceandEngineering,TianjinUniversity,Tianjin300072,China©CentralSouthUniversityPressandSpringer-VerlagBerlinHeidelberg2012
设计题目:
__百威酒店建筑给水排水工程设计
学生姓名:
_陆佳伟
学院名称:
___水利与环境工程学院
专业名称:
给水排水工程
班级名称:
给水1141
学号:
1106441104
指导教师:
蒋维卿
教师职称:
副教授
外文文献:
Energyefficiencyperformanceofmulti-energydistrictheatingandhotwatersupplysystem
SchoolofEnvironmentalScienceandEngineering,TianjinUniversity,Tianjin300072,China©CentralSouthUniversityPressandSpringer-VerlagBerlinHeidelberg2012
J.Cent.SouthUniv.(2012)19:
1377−1382
DOI:
10.1007/s11771-012-1153-8
Energyefficiencyperformanceofmulti-energydistrictheatingand
hotwatersupplysystem
JINNan(金楠),ZHAOJing(赵靖),ZHUNeng(朱能)
SchoolofEnvironmentalScienceandEngineering,TianjinUniversity,Tianjin300072,China
©CentralSouthUniversityPressandSpringer-VerlagBerlinHeidelberg2012
Abstract:
Adistrictheatingandhotwatersupplysystemispresentedwhichsyntheticallyutilizesgeothermalenergy,solarthermalenergyandnaturalgasthermalenergy.Themulti-energyutilizationsystemhasbeensetatthenewcampusofTianjinPolytechnicUniversity(TPU).Acoupleofdeepgeothermalwellswhichare2300mindepthweredug.Deepgeothermalenergycascadeutilizationisachievedbytwostagesofplateheatexchangers(PHE)andtwostagesofwatersourceheatpumps(WSHP).Shallowgeothermalenergyisusedinassistantheatingbytwogroundcoupledheatpumps(GCHPs)with580verticalgroundwellswhichare120mindepth.Solarthermalenergycollectedbyvacuumtubearrays(VTAs)andgeothermalenergyarecomplementarilyutilizedtomakedomestichotwater.SuperfluoussolarenergycanbestoredinshallowsoilfortheGCHPutilization.Thesystemcanusefossilfuelthermalenergybytwonaturalgasboilers(NGB)toassistinheatingandmakinghotwater.Theheatingenergyefficiencywasmeasuredinthewinterof2010−2011.Thecoefficientsofperformance(COP)underdifferentheatingconditionsarediscussed.Theperformanceofhotwaterproductionistestedinalocaltypicalwinterdayandthesolarthermalenergyutilizationfactorispresented.TherusultsshowthattheaveragesystemCOPis5.75or4.96underdifferentworkingconditions,andthetypicalsolarenergyutilizationfactoris0.324.Keywords:
geothermalenergy;solarthermalenergy;districtheating;hotwatersupply
1Introduction
Buildingenergyconsumptiontakesabout23%inthetotalenergyconsumptioninChinaatpresentanditisingrowthtrend[1].Heatingloads,coolingloadsandhotwaterloadsarethemainitemsofbuildingenergyconsumption.RenewableenergyhasbeenwidelyusedinChinaforrecentyears.Geothermalenergyandsolarthermalenergyaremostcommonlyusedinbuildings.Independentutilizationofsinglerenewableenergyispopular,butintegratedutilizationofseveralkindsofrenewableenergyisrelativelyscarce.Adistrictheatingandhotwatersupplysystemwas
designedforthenewcampusofTianjinPolytechnicUniversity,China.Inthissystem,geothermalplateheatexchanger(PHE),watersourceheatpump(WSHP),groundcoupledheatpump(GCHP)andnaturalgasboiler(NGB)areusedsyntheticallytoheatthecampusbuildings;
geothermalPHE,vacuumtubearray(VTA)andNGBareusedcomplementarilytomakedomestichotwater.TherearesomecasestudiesongeothermaldistrictheatinginTurkeyinresentyears[2−7].Someresearchesfocusedonenergyanalysisofgeothermalheatingsystems[8−15].Intheseresearches,deepgeothermalenergyistheonlysourceofheating.Thissystemusesmulti-energyinheating,includingdeepgeothermalenergy,shallowgeothermalenergyandnaturalgasthermalenergy.Thesystemusessolarthermalenergy,deepgeothermalenergyandnaturalgasthermalenergytomakedwellshotwater.Thoughtherewaspreviousresearchonsolarenergyusedinheatingandcooling[16],solarhotwateruseddirectlyasdwellshotwaterisadirectandhighlyefficientwaytoutilizesolarthermalenergy.Thecoefficientsofperformance(COPs)underdifferentheatingconditionsarediscussedaccordingtheactualmeasurementdatainthewinterof2010−2011.Theperformanceofsolarhotwaterproductioninalocaltypicalsunshinewinterdayispresented.Thedesignideaofthissystemcanbereferredinothermulti-energybuildingsystemdesigns.
2Systemsandoperationstrategy
Thegeothermal,solarthermalandnaturalgasthermalenergycouplingutilizationsystemfordistrictheatingandcentralhotwatersupplyofTPU’snewcampusconsistsoftwoparts:
multi-energydistrictheatingsystem(MEDH)(Fig.1)andmulti-energycentralhotwatersupplysystem(MECHWS)(Fig.2).Foundationitem:
Project(2010DFA72740-06)supportedbyInternationalScience&TechnologyCooperationProgramofChinaReceiveddate:
2011−07−26;Accepteddate:
2011−11−14Correspondingauthor:
ZHAOJing,PhD;Tel:
+86−22−27409188;E-mail:
zhaojing@
2.1MEDH
TheMEDHutilizesbothgeothermalenergyofdeeplayerandshallowlayer.Naturalgasthermalenergyisusedasanauxiliaryandassistantheatingsource.AcoupleofgeothermalwellsthatreachtheOrdovicianindepthof2300mweredug.Eachwellwassetinawellhouseandequippedwithwellmouthequipments.Groundwaterisdrawnupbyavariablefrequencysubmersiblepump(VFSP).Then,thegroundwaterispumpedtowellwaterheatexchangers(WWHE)andthehotwaterheatexchangers(HWHE)oftheMECHWSs.Thecontrolvalve(CV)inFig.1isonlyopenedwhentheMECHWSneedsgeothermalwater.TheWWHEsaredividedintotwostages.ThegroundwaterispumpedthroughthehotsideofthefirststageoftheWWHE(WWHE-I).ThecoldsideoftheWWHE-IisconnectedtothewaterfeederandcollectoroftheMEDHs.ThecircularflowpumpedbythepumpP1throughthecoldsideoftheWWHE-Iisapartoftheheatingflow.ThegroundwaterisdividedintotwoflowsafteritcomesoutthehotsideoftheWWHE-Ibyanelectriccontrolvalve(ECV).OnepartissenttothehotsideofthesecondstageoftheWWHE(WWHE-II)andtheflowrateissetaccordingtotheoutletwatertemperatureofthecoldsideofWWHE-II.TheoutletwateroftheWWHE-IIispumpedtotheevaporatorsoftheWSHP.Whenthetemperatureexceeds24°C,theECVwilldecreasethegroundwaterflowratetotheWWHE-IIuntilthetemperatureisbelow24°C.Whenthetemperatureisbelow20°C,theECVwilldotheoppositeoperation.ThisisbecauseexorbitantevaporatorwatertemperaturewouldcausethecompressorlubricatingoiltobecarbonizedandthelowevaporatorwatertemperaturewouldleadtoaninferiorCOPoftheWSHP.Thegroundwaterflowsarecombinedandsenttotheinvertedwellaftercascadeutilization,asshowninFig.1.Thegroundwatercanbeinvertedto100%duetothelocalgeologicalstructureandthereisnoneedforpressureinvertedpumps.TheWSHPsaredividedintotwostagestoo,WSHP-IandWSHP-II.ThecoldsidecircularflowoftheWWHE-IIpumpedbyP2isjusttheheatsourceoftheWSHP.ThecircularflowissentintotheevaporatorofWSHP-IandthentheevaporatoroftheWSHP-IIgivesoffheatinsequence.ThecondensersoftheWSHPareparalleledandconnectedtothewaterfeederandcollectoroftheMEDHs.ThecircularflowthroughthecondenserspumpedbythepumpP3isanotherpartoftheheatingflow.TheWSHParealsousedasfreezersinsummerwiththecoldsourceofcoolingtowers.TwoGCHPsareparalleledtoheatandcoolthebuildingstoo.580verticaldoubleU-tubegroundheatexchangers(VDUGHE)areusedtoabsorbandreleaseheat.TheholesofU-tubesare120mindepth.TheGCHPsareconnectedtothewaterfeederandwatercollectoroftheMEDHstosupplyheatingandcoolingflows.TwoparallelNGBsareusedtoassistinheatingwhenthegeothermalenergycannotfulfillthepeakheatloadorthegeothermalenergyequipmentsarebroken.
2.2MECHWSs
TheMECHWSsutilizesolarthermalenergy,geothermalenergyandnaturalgasthermalenergyinacomplementaryway.TwoparallelVTAsareusedtocollectsolarthermalenergy.EachoftheVTAsconsistsof120collectors.Eachcollectorhas50vacuumtubesinparallelconnection.Every5collectorsaresetinseriesand24suchseriesareparalleledeachothertoconstituteanarray.ThetotalabsorberareaoftwoVTAsis1500m2.Thesolarhotwaterisusedashotwaterofdwellsdirectly.ThewateriscirculatedbythepumpP4betweentheVTAandasolarhotwatertank(SHWT)whichis20tincapacity.ThewatertemperaturesinthemiddleheightofthetankandtheoutletoftheVTAaretestedbyplatinumresistancethermometers.Thetemperaturesignalsaresenttoanelectriccontrolcasing(ECC-1)whichcontrolsthewatercirculationbetweentheVTAandtheSHWT.ThewaterintheSHWTcanbepumpedbythepumpP5toacentralhotwatertank(CHWT)whichis200tincapacityandthewaterintheCHWTcanbepumpedtotheSHWTbythepumpP6.ThewatertemperatureintheCHWTistestedbyaplatinumresistancethermometer.ThistemperaturesignalandtheSHWTwatertemperaturesignalaresenttothesecondelectriccontrolcasing(ECC-2).ThewatercirculationbetweentheSHWTandtheCHWTiscontrolledbytheECC-2.Ifthecollectedsolarthermalenergycannotmeettheenergyrequirementtomakeenoughhotwaterofdwells,geothermalenergywillbeusedtoheatwaterthroughtheHWEC
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 酒店 建筑 给水 排水工程 设计 外文 翻译
![提示](https://static.bdocx.com/images/bang_tan.gif)