Consider a steam power plant that operates on a regenerative ranking cycle and has a net power output of 150MW .steam entersvthe turbine at 10Mpa and 500 degrees celsuis and the condenser at 10Kpa . The isentropic efficiency of the turbine is 80% and that of the pumps is 95% . Steam is extracted from the turbine at 0.5Mpa to heat the feed water in an open feed water heater.water leaves the feed water heater as a saturated liquid. Determine the mass flow rate of steam through the boiler and the thermal efficiency of the cycle .