Question

Consider two separate tanks of volumes 8.0 m³ and 3.0 m³ each containing carbon dioxide (CO2). The conditions in the larger tank are 300 K and 600 kPa and in the smaller tank are 1000 K and 2000 kPa. The gases in the two tanks are allowed to mix and reach an equilibrium temperature of T_e and pressure p_e. Assume the tank is insulated.

(a) Determine the final temperature T_e (K) and pressure p_e (kPa).
(b) Calculate the entropy generation (kJ/K) during the mixing process. (c) What causes the entropy generation.

Answer 1