演示型电动车用热泵空调系统试验台搭建

毕业设计（论文）报告纸共页第1页┊┊┊┊┊┊┊┊┊┊┊┊┊装┊┊┊┊┊订┊┊┊┊┊线┊┊┊┊┊┊┊┊┊┊┊┊┊演示型电动车用热泵空调系统试验台搭建摘要本设计的目的是，对已给定车内夏季制冷负荷与冬季制热负荷的电动汽车的热泵空调系统，进行演示试验台的搭建。课题的实施过程：首先根据上海地区的冬夏气象条件，得到合理的两季的外部空气参数；得到合理的试验台风量和外部尺寸要求。根据这些参数进行循环计算，先以夏季工况下的参数要求为标准，对相关部件、传感器进行初步选型，并根据微通道换热器的计算公式与设计方法，对微通道冷凝器进行初步设计；之后对初步设计、选型的部件进行冬季工况的校核，直至全部部件都能满足冬夏两季的参数要求，完成选型设计步骤。最后，根据所设计、选型的各个部件外部尺寸和试验台搭建要求，进行整个试验台的布置安排；并在搭建完成后，进行制冷、制热工况的初步试验。关键词:电动汽车；试验台；热泵；空调系统；微通道冷凝器AbstractThisdesignisaimedatputtingupatest-bedforheatpumpairconditioningsystemusedinelectricvehicleswhosecoolingandheatingloadsarealreadygiven.Implementationprocessesofthissubject:firstly,accordingtotheoutdoorairconditionsofsummerandwinterinShanghai,properairconditionsinbothseasonscanbegot;getproperairflowandexternaldimensionsofthetest-bed.Secondly,dothecalculationofthecycleperformancesaccordingtotheseparameters,anddothepreliminaryselectionoftherelatedpartsandsensorsandthepreliminarydesignofthemicro-channelcondenseraccordingtotheformulasanddesignmethodsofmicro-channelheatexchanger,inordertofulfilltheparameterrequirementsofsummerconditions.Thencheckthepreliminarydesignandselectionbasedonwinterconditionsuntilallthepartscanmeettheparameterrequirementsofbothseasons,andthentheselectionanddesignarefinished.Finally,makethearrangementofthetest-bedaccordingtotheexternaldimensionsofthedesignedandselectedpartsandtherequirementsofputting毕业设计（论文）报告纸共页第2页┊┊┊┊┊┊┊┊┊┊┊┊┊装┊┊┊┊┊订┊┊┊┊┊线┊┊┊┊┊┊┊┊┊┊┊┊┊upthetest-bed,andgivepreliminarytestsforbothcoolingandheatingconditions.Keywords:electricvehicles;test-bed;heatpump;airconditioningsystem;micro-channelcondenser目录摘要...........................................................................................................................................................1Abstract.....................................................................................................................................................1目录...........................................................................................................................................................2符号说明...................................................................................................................................................21绪论.......................................................................................................................................................31.1电动汽车的研究背景及意义............................................................................................................41.2电动车热泵空调系统的研究背景及意义........................................................................................41.3热泵空调系统的系统形式与国内外的发展现状............................................................................51.3.1R134a热泵空调系统...............................................................................................................51.3.2CO2热泵空调系统..................................................................................................................61.3.3太阳能辅助热泵空调系统.....................................................................................................71.3.4电加热辅助热泵空调系统.....................................................................................................71.4本课题的主要工作............................................................................................................................82电动汽车热泵空调系统循环...............................................................................................................82.1电动汽车热泵空调系统循环原理....................................................................................................82.2电动汽车热泵空调系统循环理论分析............................................................................................92.3本课题中电动汽车热泵空调系统的理论计算..............................................................................102.3.1课题的设计要求和参数.......................................................................................................102.3.2制冷工况的理论计算...........................................................................................................102.3.3热泵工况的理论计算............................................................................................................113电动汽车热泵空调系统微通道冷凝器设计及校核..........................................................................113.1微通道换热器介绍...........................................................................................................................113.2微通道换热器设计方法..................................................................................................................123.2.1夏季制冷工况的确定...........................................................................................................123.3微通道冷凝器设计计算..................................................................................................................133.4微通道冷凝器热泵工况校核..........................................................................................................164电动汽车热泵空调系统各部件的选型及校核.................................................................................174.1压缩机的选配及热泵工况校核...............