A heat engine consists of an oil-fired steam turbine driving an electric power generator with a power output of 120megawatts. The thermal efficiency of the heat engine is 40 percent.
(a.) Determine the time rate at which heat is discarded by the engine.
(b.) If the heat of combustion of oil is 4.4 x 10^7 joules per kilogram, determine the rate in kilograms per second at which the oil is burned.
(c.) Determine the time rate at which heat is discarded by the engine.
(d.) If the discarded heat is continually and completely absorbed by the water in a full tank measuring 200 meters by 50 meters by 10 meters, determine the change in the temperature of the water in 1 hour. (Density of water is 1.0 x 10^3 (kg/m^3); specific heat of water is 4.2 x 10^3 (J/kg x degrees C))
