Thermal performance prediction of a solar hybrid gas turbine |
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| Authors: | G Barigozzi G Bonetti G Franchini A Perdichizzi S Ravelli |
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| Affiliation: | 1. Dipartimento di Ingegneria Industriale e Scienze Matematiche, Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy;2. Libera Università di Bolzano, Facoltà di Scienze e Tecnologie, Piazza Università, 539100 Bolzano, Italy;1. DISAAT Department, University of Bari, Via Amendola 165/A, 70125 Bari, Italy;2. DIMEG Department, Politecnico of Bari, Via Orabona 4, 70125 Bari, Italy;3. CPSE Chemical Engineering Department, Imperial College London, UK;1. Omar Almokhtar University, Faculty of Engineering, Libya;2. Port Said University, Faculty of Engineering, Egypt;1. Department of Applied Physics, University of Salamanca, 37008 Salamanca, Spain;2. UPIITA – Instituto Politécnico Nacional, México D.F., Mexico |
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| Abstract: | The present work focuses on a modelling procedure to simulate the operation of a solar hybrid gas turbine. The method is applied to a power generation system including an heliostat field, a receiver and a 36 MW commercial gas turbine. Heat is provided by concentrated solar power and integrated by fossil fuel. A detailed modelling of the gas turbine (GT) is proposed to predict the performance of commercial GT models in actual operating conditions. Advanced software tools were combined together to predict design and off-design performance of the whole system: TRNSYS® was used to model the solar field and the receiver while the gas turbine simulation was performed by means of Thermoflex®. A detailed comparison between the solarized and the conventional gas turbine is reported, taking into account GT electric power, efficiency and shaft speed. All thermodynamic parameters such pressure ratio, air flow and fuel consumption were compared. The main advantage of solarization is the fossil fuel saving, but it is balanced by a relevant penalty in power output and efficiency. |
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