Isentropic Line On Pv Diagram. A convenient way to visualize these changes in the pressure and volume is by using a pressure volume diagram or pv diagram for short. Du nc dt and dw pdv.
P v diagrams of isentropic polytropic and isothermal compression processes. A system can be described by three thermodynamic variables pressure volume and temperature. Isothermal process on p v t v and p t diagrams isothermal t t 0 constant a p 1 v 1 t 0 b p 2 v 2 t 0 pv nrt 0 pv v nrt 0 tv 0 pt multivalued a t v 1 v 2 t 0 b v a a p p 1 p 2 v 1 v 2 b t 0 w q v p t 0 t b p 1 p 2.
Since γ 1.
Mpv γ. The area under a process curve on a t s diagram is related to the amount of heat transferred to the gas. P 1 v 1 κ p 2 v 2 κ. On a p v diagram lines of constant temperature curve from the upper left to the lower right.