A heat engine operating on the Carnot cycle uses solar energy as the source of hightemperature heat input. The solar irradiation, averaged over the day, has a value of 0.51 kW/m2. This provides energy to the cycle at a uniform temperature of 450 K, and the cycle rejects heat to the environment at a temperature of 300 K. The engine produces 2 MW of power. Determine the minimum area needed to provide this power.