Exergoeconomic analysis of a fluidized-bed coal combustor (FBCC) steam power plant |
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| Authors: | Koray Ozdemir Arif Hepbasli Nurdil Eskin |
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| Affiliation: | 1. Graduate School of Natural and Applied Sciences, Mechanical Engineering Science Branch, Ege University, 35100 Bornova, Izmir, Turkey;2. Department of Mechanical Engineering, Faculty of Engineering, Ege University, 35100 Bornova, Izmir, Turkey;3. Faculty of Mechanical Engineering, Istanbul Technical University, 34437 Gumussuyu, Istanbul, Turkey;1. Department of Chemical Engineering, Faculty of Engineering, Ege University, 35100 Bornova, Izmir, Turkey;2. Department of Energy Systems Engineering, Faculty of Engineering, Yasar University, 35100 Bornova, Izmir, Turkey;1. Faculty of Mechanical Engineering, University of Tabriz, Iran;2. Department of Mechanical Engineering, Faculty of Engineering, University of Mohaghegh Ardabili, Ardabil 179, Iran;3. Institute for Energy Engineering, Technische Universität Berlin, Marchstr 18, 10587 Berlin, Germany;4. Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, Ontario L1H 7K4, Canada;1. School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beinong Road 2, Beijing 102206, China;2. Institut für Energietechnik, Technische Universität Berlin, Marchstraße 18, Berlin 10587, Germany |
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| Abstract: | Exergoeconomic analysis has been used as a powerful tool to study and optimize various types of energy-related systems. This study deals with an exergoeconomic analysis of an FBCC steam power plant, located in the city of Izmir, Turkey using actual operational data. This plant consists of a ventilation fan (VF), an FBCC, a heat recovery steam generator (HRSG), a cyclone (CY), an economizer (ECO), an aspiration fan (AF), a pump (P) and a chimney (CH) as sub-systems. Quantitative exergy cost balance for each component and the whole FBCC plant is considered. The exergetic efficiency of this plant is calculated to be 20.28% at a steam mass flow rate of 1.861 kg/s. The highest exergy destruction rate occurs in the FBCC with an irreversibility rate of 89.2%, followed by HRSG, VF, ECO, AF, CH and P. The unit exergy cost and exergy cost of steam produced by the FBCC steam plant amount to 17.88 US$/GJ and 93.57 US$/h, respectively. This study demonstrates that exergoeconomic analysis can provide extra information than exergy analysis, while the results obtained from this analysis present cost-based information. |
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