1. Consider a solar-energy-powered ideal Rankine cycle that uses water as the working fluid. Saturated vapor leaves the solar collector at 1000 kPa, and the condenser pressure is 10 kPa. Determine the thermal efficiency of this cycle.
2. The power plant in the previous problem is augmented with a natural gas burner to superheat the water to 300?C before entering the turbine. Find the cycle efficiency with this configuration and the specific heat transfer added by the natural gas burner.