Exergetic analysis of a solar thermal power system |
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| Affiliation: | 1. All India Council for Technical Education, I.G. Sports Complex, I.P. Estate, New Delhi, 110 002, India;2. Centre of Energy Studies, I.I.T., New Delhi, 16, India;3. Mechanical Engineering, REC Assam Silchar, 788010, India;1. Faculty of Engineering Modern Technologies, Amol University of Special Modern Technologies, Amol, Iran;2. Department of Renewable Energies and Environment, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran;1. School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding 071000, China;2. School of Mechanical and Electrical Engineering, North China Institute of Aerospace Engineering, Langfang 065000, China;1. Unit of Environmental Science and Technology, Department of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechneiou Street, Zografou Campus, 15773 Athens, Greece;2. University of Applied Sciences of Western Greece, Department of Mechanical Engineering, Laboratory of Thermodynamics, Heat transfer and Steam-Gas Turbines;3. University of Western Macedonia, Department of Mechanical Engineering, Bakola & Sialvera, Kozani 50100, Greece;4. Department of Business Development and Technology, Aarhus University, Birk Centerpark 15, 7400 Herning, Denmark;5. Department of Management, School of Economics, Finance and Management, University of Bristol, Priory Road Complex, Priory Road, Bristol, BS8 1TU, United Kingdom;1. Vocational School of Technical Science, Department of Electrical and Energy, Aksaray University, 68100, Aksaray, Turkey;2. Department of Mechatronics Engineering, Faculty of Technology, Isparta University of Applied Sciences, 32100, Isparta, Turkey;3. Department of Energy System Engineering, Faculty of Technology, Isparta University of Applied Sciences, 32100, Isparta, Turkey |
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| Abstract: | This communication presents a second law analysis based on an exergy concept for a solar thermal power system. Basic energy and exergy analysis for the system components (viz. parabolic trough collector/receiver and Rankine heat engine, etc.) are carried out for evaluating the respective losses as well as exergetic efficiency for typical solar thermal power systems under given operating conditions. It is found that the main energy loss takes place at the condenser of the heat engine part, whereas the exergy analysis shows that the collector–receiver assembly is the part where the losses are maximum. The analysis and results can be used for evaluating the component irreversibilities which can also explain the deviation between the actual efficiency and ideal efficiency of a solar thermal power system. |
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