Abstract
In this work, a thermodynamic analysis of a solar Rankine cycle of the Solar II power plant is developed by means of the Equation Engineering Solver (EES) software. The Design cycle is established to define the sizing parameters of the cycle to match a desired electric power value (10 MW) with efficiency equal to 0.33. To improve the performance and the power of the plant, additional reheats are integrated with multiple cycle configurations. The partially expanded fluid is reheated with solar energy until a maximum temperature. A thermodynamic analysis is then developed with EES software for two models of the cycle: the cycle with a single reheat and the cycle with two reheat. By increasing the temperature and with improved isentropic efficiencies of the turbines, efficiencies of the cycle with single reheat are excelling at reaching a value of 0.39 for a temperature of overheating and reheating at 783.2 [K]. In this case the gain in efficiency is 18.18% and for power is equal to 31.8% compared to the performance and power of the power plant without reheat. The efficiencies of the cycle with two reheats are excelling at reaching a maximum value of about 0.4 for overheating and reheat temperatures equal to 783.2 [K]. The gain in efficiency is equal to 21.21% and for power is 52.2%.
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