An air-standard cycle with variable specific heats is executed in a closed system and is composed of the following four processes:
1-2 Isentropic compression from 100 kPa and 27 degrees C to 1.11 MPa
2-3 P = constant heat addition in amount of 3,020 kJ/kg
3-4 v= constant heat rejection to 100 kPa
4-1 P = constant heat rejection to initial state
A) Calculate the maximum temperature in the cycle
B) Determine the thermal efficiency. %