Repeat Prob. 9–14 using constant specific heats at room temperature.

Data From Q#14 :

An air-standard cycle with variable specific heats is  executed in a closed system with 0.003 kg of air and consists of  the following three processes:

1-2 v = constant heat addition from 95 kPa and 17°C to  380 kPa

2-3 Isentropic expansion to 95 kPa 

3-1 P = constant heat rejection to initial state 

(a) Show the cycle on P-v and T-s diagrams. 

(b) Calculate the net work per cycle, in kJ. 

(c) Determine the thermal efficiency.