A solar power plant operates on a standard ideal cycle with Refrigerant-134a as a working fluid. R-134a enters the turbine at a rate of 0.05 m3/s, 18 bar and leaves the turbine at 7 bar. The rate of energy input to the collectors from solar radiation is 0.3 kW per m2 of collector surface area, with 60% of the solar input to the collectors absorbed by the refrigerant as it passes through the collectors in the boiler. Determine (a) The solar collector surface area (5003 m2) (b) The thermal efficiency of the power plant (9.4%)