A power plant produces electricity by burning coal, using thermal energy as the input to a steam engine that produces electricity. The power plant has a power output of 400 MW and 35% efficiency.
A. Calculate the rate at which thermal energy is being produced.
B. Calculate rate at which coal is burned if the energy density is 30 MJ kg^-1.
C. The waste heat is removed by flowing water. The temperature of the water must not increase by more than 5 degrees C. Calculate the rate at which the water must flow.

Question

A power plant produces electricity by burning coal, using thermal energy as the input to a steam engine that produces electricity. The power plant has a power output of 400 MW and 35% efficiency.
A. Calculate the rate at which thermal energy is being produced. 
B. Calculate rate at which coal is burned if the energy density is 30 MJ kg^-1.
C. The waste heat is removed by flowing water. The temperature of the water must not increase by more than 5 degrees C. Calculate the rate at which the water must flow.