资源描述:
《空调热水器系统研究-毕业论文外文文献翻译》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、外文翻译(英文原文)ABSTRACTTheworkingprinciplesandthebasicfeaturesofairconditioningwaterheater(ACWH)systemareintroducedinthispaper.Theairconditioningwaterheatersystemcanoperateinfivemodes:water-heatingonly,space-coolingandwater-heating,space-heatingandwater-heating,space-cooling,space-heating.Comparativel
2、y,thesystemcanprovidemuchbetterenergyperformanceandhigherequipmentutilizationthroughoutayear,andcauselessthermalpollutionthanheatpumpwaterheaterandcommonairconditioner.Aprototypewithfivemodeswasassembledandtestedattheambienttemperaturefrom-7℃to43℃,especiallywhenfrosting.Whenitworksinthewater-heat
3、ingmode,itcansupply55℃hotwaterwithintwominutes,andthecondensingpressureisjustsamewithcommonairconditioner.Whensomemodesswitch,thetemperatureoftheoutlethotwaterisconstant.TheoreticalanalysisandexperimentalstudyweredonetotheACWHinthisthesis:1.Theprototypewastestedintheair-conditionerlaboratoryofGRE
4、E.Thetestingdataindicatethattheprototypeaccordswellwiththenationalstandardsofairconditionerandheatpumpwaterheater.2.Basedontheexperimentalresults,analysiswasdoneontheACWHinmainoperatingmodesandsomeimportantconclusionsweregiven,Theresultsindicatethatthenewsystemcansaveenergythroughmulti-duties,and
5、itcanworkstablyinfiveworkmodeswithhighefficiency.Comparedwithothermodels,thenewsystemalsoincludesair-conditioningunitandwaterheaterunit,butwithfewercomponentsandhigherreliability.Basedoncommonairconditioner,thissystemcanofferapracticablesolutioncouplingairconditionerandwaterheater.Itmustbechangin
6、gthemarketsofbothairconditionerandwaterheater.1.INTRODUCTIONTheheatpumpwaterheater(HPWH)hasbeenusedsince1950s,mainlyforhouseholdapplications.Itabsorbsheatenergyfromtheambientairtoacquirehotwater.Inthelast20years,thestudyintendstodesignheatpumpwaterheaterwithhighreliabilityandpracticability,andman
7、ymanufacturersturntoofferthisproductionbasedonenvironmentalprotectionandenergysaving.InSouthAfrica,HPWHhaspenetrated16percentofthemarketshareforcommercialwaterheaters.Becauseofthehighlyprimarycost,itisdifficulttobecome