Air in a piston cylinder assembly undergoes a Carnot power cycle. The isothermal expansion and compression processes occur at 1400 Kelvin and 350 Kelvin, respectively. The pressures at the beginning and end of the isothermal compression are 100 kPa and 500 kPa, respectively. Assuming the ideal gas model with a cp of 1.005 kJ/( kg.K), determine
a. The pressures at the beginning and end of isothermal expansion, each in kPa
b. The heat transfer and work transfer, in kJ/kg, for each process.
c. The thermal efficiency