12: constant-pressure expansion, 23: constant volume, 31: constant-temperature compression. T1 = 100C, T2 = 600C, P1 = 200 kPa. m = 2 kg. Air behaves as an ideal gas (R=287 J/kg K, k = 1.4). Create the P-V, V-T, P-T diagrams of the cycle [10%]. Find the total work done [5%], the total technical work done [5%], the total heat exchanged [5%], the efficiency of the cycle [5%], the entropy change from point 1 to point 3 [5%]. Also, calculate COP(I) and COP(II) if we change the direction from clockwise to anti-clockwise (10%).