*(processes on p-v and t-v diagrams) a system consisting of 1 kg of h2o in a pistoncylinder undergoes a power cycle composed of the following processes: process 1-2: constant – pressure heating at 10 bar from saturated liquid. process 2-3: constant- specific volume cooling to saturated vapor at p3 = 5 bar, t3 = 151.86 o c. process 3-4: isothermal compression (heat also transfers from the system to surroundings). process 4-1: constant – specific volume heating. sketch the cycle on t-v and p-v diagrams. neglecting kinetic and potential energy effects, determine the thermal efficiency