A new solar energy-based integrated carbon capturing system with a gas turbine-supercritical CO2 combined power cycle

This paper introduces a new multigeneration gas turbine-supercritical carbon dioxide combined power cycle integrated with a solar-powered carbon capturing system to produce electricity, cooling effect, freshwater, and ammonium bicarbonate. This multigeneration system is analyzed using the first and second laws of thermodynamics to assess the system performance. The results of this analysis show that this integrated system is able to produce ammonium bicarbonate at a rate of 1.30 kg s-1, while producing 2,280 kW of electric power. The overall energy and exergy efficiencies of this integrated system are found to be 22.3%, and 11.9%, respectively. Then, some parametric studies are conducted to observe how this integrated system behaves under different operating conditions. One finding is that the solar irradiance affects the overall energy and exergy efficiencies considerably. Also, changing the isentropic efficiencies of the turbines in the system has more significant effects on the net electric power production than changing the isentropic efficiencies of the compressors.

Automated summary

This study introduces a new multigeneration gas turbine-supercritical carbon dioxide combined power cycle integrated with a solar-powered carbon capturing system. The system can produce electricity, cooling effect, freshwater, and ammonium bicarbonate. Parametric studies show that solar irradiance and changes in turbine isentropic efficiencies have significant effects on system performance, particularly on net electric power production.