A steam power plant receives heat from a furnace at a rate of 280 GJ/h. Heat losses to the surrounding air from the steam as it passes through the pipes

and other components are estimated to be about 8 GJ/h. If the waste heat is transferred to the cooling water at a rate of 145 GJ/h, determine answer the followings: a. Total heat rejected by this power plant (Gj/h).(Points 3) b. Net power output (MW). (Points 10) c. The thermal efficiency of this power plant(%). (Points 7)