A dynamic simulation model of a hybrid solar gas-turbine power plant has been developed, allowing determination of its thermodynamic and economic performance. In order to examine optimum gas-turbine designs for hybrid solar power plants, multi-objective thermoeconomic analysis has been performed, with two conflicting objectives: minimum levelized electricity costs and minimum specific CO2 emissions. Optimum cycle conditions: pressure-ratio, receiver temperature, turbine inlet temperature and flow rate, have been identified for a 15 MWe gas-turbine under different degrees of solarization. At moderate solar shares, the hybrid solar gas-turbine concept was shown to provide significant water and CO2 savings with only a minor increase in the levelized electricity cost.

Volume Subject Area:
Concentrating Solar Power Plants
Topics:
Design, Gas turbines, Solar power stations, Solar energy, Carbon dioxide, Temperature, Cycles, Emissions, Flow (Dynamics), Power stations, Pressure, Simulation models, Thermoeconomics, Turbines, Water
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