A novel hybrid solar preheating intercooled gas turbine based on linear Fresnel reflector

In this study, a new hybrid Solar Preheating Intercooled Gas Turbine (SPIcGT) is originally introduced, in which a linear Fresnel solar field used for preheating the compressed air before entering the combustor.The solar Preheating Gas Turbine (SPGT) has been used as a reference gas turbine cycle. Eight performance indicators have been used in the analysis under Guangzhou (China) weather data. The study reveals that the SPIcGT is superior to the SPGT system as it is capable of boosting the fuel-based efficiency by 19.5% versus 0.26% for the SPGT system.The SPIcGT has lower specific fuel consumption (about 7017 kJ/kWh) compared with the 10358 kJ/kWh for SPGT.Meanwhile,the solar integration of the linear Fresnel solar field into an intercooled gas turbine cycle is more economical than the solar integration with the conventional gas turbine cycle. The levelized electricity cost of 4.34 USȻ/kWh was achieved for SPIcGT which is lower than 5.15% for SPGT. Moreover,the fuel consumption and CO₂ emissions can be reduced greatly (about 19.3 %) by integrating the linear Fresnel solar field with the intercooled gas turbine.