Thermodynamic Investigation of a Single Flash Geothermal Power Plant Powered by Carbon Dioxide Transcritical Recovery Cycle

The use of new energy sources, including geothermal energy, is expanding rapidly in the world, and this energy is a good alternative to fossil fuels. In the present study, a combined power generation system (combined instantaneous evaporation cycle with supercritical carbon dioxide recovery cycle) using geothermal sources is proposed. The proposed system is analyzed in terms of energy and exergy. In this study, the energy and exergy analysis of the proposed system with respect to the separator pressure, inlet pressure of the carbon dioxide turbine and the outlet temperature of the carbon dioxide condenser have been performed. The results show that the proposed system in the recovery mode with a net power of 401.40 kW, energy efficiency of 53.6%, exergy efficiency of 46.32% has been calculated, which compared to the baseline, these values ​​are 149.9 kW, respectively, 2.39 Percent and 12.12 percent, show a significant increase