Abstract
This work presents a preliminary thermodynamic assessment of a Concentrating solar power (CSP) system made up of a micro gas turbine (MGT) coupled with a parabolic dish concentrator. The thermal engine characteristics are representative of state-of-the art of MGTs (Net power=31.5kWe Turbine Inlet Temperature (TIT)=850°C) while the “solar section” (thermal receiver and parabolic mirror) performance are modelled in accordance with current research outcomes. The overall system is designed and a second law analysis is reported. An estimate of yearly electricity yield is performed (83.98 MWhe) and the obtained sun-to-electricity efficiency (about 18.3%) reveals energetic competiveness with other CSP solutions (parabolic trough and solar tower). A simplified economic analysis (Levelized cost of electricity (LCOE) is 165.7 €/MWh) highlights how Solarized Micro Gas Turbine (SMGT) is a promising CSP technology whose improvements perspective can drive dedicated R&D activities.
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