One pound mass of air is contained in a piston-cylinder assembly that executes a Carnot power cycle. The isothermal expansion starts at a volume of 0.262 ft3 from a pressure of 2685 psi to a pressure of 1880 psi. The isothermal compression starts at a volume of 13.61 ft3 from a pressure of 14.7 psi to a pressure of 21 psi.
a. Determine the heat transfer to the air during the isothermal expansion (BTU).
b. Determine the heat transfer from the air during the isothermal compression, Q41 (BTU).
c. Determine the temperature at the beginning of the isothermal expansion, T2 (BTU).
d. Determine the temperature at the beginning of the isothermal compression, T4 (BTU).
e. Calculate the work done by, or on, the air during each of the four processes (BTU).
f. Sum all Q values and all W values and verify that Q_total = W_total.
g. Determine the cycle thermal efficiency.