欢迎来到天天文库
浏览记录
ID:27609121
大小:487.01 KB
页数:46页
时间:2018-12-02
《工程热力学engineeringthermodynamics工程热力学工程热力学》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、工程热力学EngineeringThermodynamics西安建筑科技大学环境与市政工程学院SchoolofMunicipal&EnvironmentalEngineeringXi’anUniversityofArchitecture&Technology主讲人:赵蕾ZhaoLeiEmail:zhaolei@xauat.edu.cn教师介绍赵蕾,博士,副教授,硕士生导师环境与市政工程学院Address:环境与市政工程学院实验教学楼206室热工流力教研室Tel:82202185E-mail:zhaolei@xauat.edu.cn助教介绍Name:Address:高层研
2、究生公寓Tel:Introduction(绪论)Whatdoesthermodynamicsconcern?MainContentsofEngineeringThermodynamicsSomeRequirementsforthiscourseThermodynamicscanbedefinedasabranchofscienceofenergy.heatThermedynamispower(Greekwords)热能ThermalEnergy工程热力学是重要的技术基础课§0.1Whatdoesthermodynamicsconcerns?(热力学涉及哪些内容?)Th
3、ermodynamicsisthebranchofsciencewhichstudiestherulethatgovernsthetransformationofthermalenergytootherformsofenergy.Alsoitstudieshowtousethermalenergyefficiently.工程热力学是一门研究热能有效利用及热能和其它形式能量转换规律的科学Itincludesallaspectsofenergyandenergytransformations(能量转换),includingpowergeneration,refrigerat
4、ionandrelationshipsamongthepropertiesofmatter.热电厂(热能→机械能)ThermalPowerPlant(ThermalEnergy→MechanicalEnergy飞机(热能→机械能)Aeroplane(ThermalEnergy→MechanicalEnergy汽车(热能→机械能)Vehicle(ThermalEnergy→MechanicalEnergy)冰箱(机械能→热能)Refrigerator(MechanicalEnergy→ThermalEnergy?WhydoweneedtolearnEngineeringT
5、hermodynamics?自然能源的种类(Categoriesofnaturalenergyresources)A.化学能(Chemicalenergy):suchas:煤炭(coal)石油(crudeoil)天然气(naturalgas)沼气(firedamp,etc).2.自然界中的能源(Naturalenergyresources)B.机械能(Mechanicalenergy)suchas:风力资源(windresources)水力资源(waterresources)潮汐能(tidalenergy),etc.C.热能(Thermalenergy)suchas:太
6、阳能(solarenergy)地热能(geothermalenergy),etc.D.原子能(Nuclearenergy)ChemicalenergyThermalenergyFusionorfissionreactionCombustion(燃烧)directlyusedMechanicalenergycanbeuseddirectly.(核聚变或和裂变)(2)能源的利用(UtilizationofEnergyResources)ThermalenergyNuclearenergyThermalenergyindirectlyused能源转换与利用的关系(Relati
7、onshipbetweenenergytransformationandutilization)热能电能机械能风能水能化学能核能地热能太阳能一次能源(天然存在)二次能源光电转换燃料电池光热聚变裂变燃烧水车水轮机风车热机电动机发电机90%转换直接利用利用生物质90%ofenergyresourcesaretransformedintothermalenergybeforeitisused.(3)能量转换的共同点(Aruleincommon)Then,thermalenergyistransformedintomechanicalenergy
此文档下载收益归作者所有