理想气体广义多方过程的热力学性质  

Thermodynamic Properties of Ideal Gas Generalized Polytropic Process

作　　者：郑世燕[1] 黄智敏[1] 

机构地区：[1]泉州师范学院物理与信息工程学院,福建泉州362000

出　　处：《泉州师范学院学报》2015年第6期75-77,共3页Journal of Quanzhou Normal University

基　　金：福建省自然科学基金资助项目(2013J01016);泉州师范学院青年人才基金资助项目(201330)

摘　　要：根据热力学理论,导出理想气体广义准静态多方过程方程的一般表达式,给出当摩尔热容与温度成线性关系时过程的内能变化、做功及热量的具体表达式,探讨理想气体四种典型的准静态过程(绝热、等温、定体及定压过程)与广义多方过程之间的关联.结果表明,多方指数n为常数的条件是(Cn,m-CV,m)为常量,而非摩尔热容(Cn,m,CV,m,Cp,m等)为常量.Abstract ：Based on the theory of thermodynamics, a general equation of the generalized quasi-static polytropic process of the ideal gas is derived.The expressions of the internal energy,work output and amount of heat exchange in the generalized polytropic process are given when the specifi heat is proportional to the temperature.The correlations between four typical quasi-static processes of the ideal gas, i.e.adiabatic, isothermal, isochorie and isobaric processes, and the polytropic process are discussed.The results show that the polytropic index n is a constant when （Cn,m --Cv,m ） is a constant ,but the specific heat （Cn,m ,Cv,m ,Cp,m etc.） is not equal to a constant.

关 键 词：理想气体 广义多方过程 摩尔热容 准静态 

分 类 号：O414[理学—理论物理]