$[80\%]$

Thermodynamic cycle:

Process $12$ : Adiabatic compression.

Process $23$ : Constant temperature expansion.

Process $31$ : Constant pressure heat rejection.

At point $1$: $x=1,T1=250C.$

At point $2$: $v2=0\mathrm{.}03\frac{m^3}{k}g,T2=400C.$

Create the T$-$s diagram of the cycle.

Calculate $($a$)$ the pressure at points $1,2,$ and $3,($b$)$ the isentropic efficiency of the adiabatic process, $($c$)$ the specific heats exchanged, $($d$)$ all specific technical works, $($e$)$ the thermal efficiency of the cycle.

Consider $dq=T$ ds$.$