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Question 1. A simple Rankine cycle works between pressures 28 bar and 0.06 bar, the initial condition of
steam being Dry saturated. Calculate the cycle efficiency, work ratio and specific steam consumtion. Solution.
From steam tables, At 28 bar:
h1 = 2802 KJ/Kg, s1 = 6.2104 KJ/Kg K h2
At 0.06 bar: hf2 = hf3 = 151.5 KJ/Kg, hfg2 = 2415.9 KJ/Kg Sf2 = 0.521 KJ/Kg K, sfg2 = 7.809 KJ/kg K 3