气体状态的变化过程主要有恒体、恒压、恒温、绝热和多变等几种过程,现利用第三讲所述的气体状态方程式及图解法来研究这些过程。 1.恒体变化过程气体加热时,气体的容积保持不变(v=常数)的气体状态变化过程。正如第三讲第3节所述,这种情况相当于在密闭容器内将气体加热。在恒体变化过程中,所有加给气体的热都消耗在气体的升温,即增加内能方 The process of gas state changes are mainly constant, constant pressure, constant temperature, adiabatic and changeable several processes, now using the third gas state equation and graphic method to study these processes. 1. The process of changing the gas When the gas is heated, the gas volume remains the same (v = constant) gas state change process. As stated in section 3, section 3, this situation is equivalent to heating the gas in a closed container. In the constant change process, all the heat added to the gas is consumed in the gas heating, that is to increase the internal energy side