An 80-MW steam turbine receives steam at 400 ∘C from the boiler. The working fluid leaves the condenser at 25 ∘C, after releasing excess heat to a river that flows at a rate of 45 m3/s. Assuming thatm...

An 80-MW steam turbine receives steam at 400 ∘C from the boiler. The working fluid leaves the condenser at 25 ∘C, after releasing excess heat to a river that flows at a rate of 45 m3/s. Assuming thatm the engine operates on an ideal Carnot cycle, calculate the temperature rise of the river water downstream from the turbine. (Density of the river water: 0.9; specific heat of the river water: 4.18 kJ/kg.)