In an ideal rankine cycle, superheated vapor enters the turbine at 200 bar and 600℃, and the condenser pressure is 0.1 bar. the mass flow rate of the steam entering the turbine is 110 kg/s. determine (a) the thermal efficiency, (b) the mass flow rate of condenser cooling water, in kg/s, if the cooling water undergoes a temperature increase of 18k with negligible pressure change in passing through the condenser and boiler.