Sensitivity Analysis of the Effective Parameters on the performance of a solar and geothermal driven ORC by Taguchi Method

The global population increase and the depletion of fossil fuel reserves, along with environmental changes caused by the rising demand for renewable energy, have turned the sustainable, adequate, and cost-effective supply of these resources into a significant challenge. The current study examines the power generation cycle based on geothermal and solar energy, aiming to optimize operational procedures, increase efficiency, and reduce energy production costs. This study utilizes EES software for exergy and exergy-economic analysis and employs the Taguchi optimization method to identify optimal operational conditions. Results show that, under optimal conditions, this system can increase the first law efficiency by up to 17% compared to the average and reduce the total exergy destruction by up to 50%. Furthermore, the results indicate that the evaporator connected to the solar collector and the condenser temperature are the main factors affecting the efficiency of the first and second laws, reducing exergy destruction, and the cost rate of exergy destruction