Thermodynamic analysis of a multigeneration system using solid oxide cells for renewable power-to-X conversion |
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| Affiliation: | 1. School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran;2. School of Mechanical Engineering, College of Engineering, University of Tehran, Iran;1. Afyon Kocatepe University, Bolvadin Vocational School, Electricity and Energy Department, Kirkgoz Campus, Afyonkarahisar, Turkey;2. Isparta University of Applied Sciences, Faculty of Technology, Department of Mechatronics Engineering, Cunur West Campus, Isparta, Turkey;3. Faculty of Engineering and Applied Science, Ontario Tech. University, 2000 Simcoe Street North, Oshawa, Ontario, Canada;1. Faculty of Mechanical Engineering, Mohaghegh Ardabili University, Ardabil, Iran;2. Faculty of Mechanical Engineering, Urmia University of Technology, Urmia, Iran;1. Department of Renewable Energies and Environment, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran;2. Faculty of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran;3. Department of Chemical Engineering, Pennsylvania State University, University Park, PA, USA;4. Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, Oshawa, Ontario, L1G 0C5, Canada;1. Basic teaching Department, Chongqing Creation Vocational College, Chongqing 402160, China;2. College of Engineering Management, Nueva Ecija University of Science and Technology, Cabanatuan, Philippines;1. Suzhou Institute of North China Electric Power University, Suzhou, 215000, China;2. North China Electric Power University, Beijing, 102206, China;3. State Grid Suzhou Power Supply Company, Suzhou, 215004, China;4. Shaanxi Yanchang Petroleum Power Sales Co., Ltd, Xi''an, 710000, China;5. Young Researches and Elite Club, Ahvaz Branch, Azad University, Ahvaz, Iran |
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| Abstract: | A hybrid renewable-based integrated energy system for power-to-X conversion is designed and analyzed. The system produces several valuable commodities: Hydrogen, electricity, heat, ammonia, urea, and synthetic natural gas (SNG). Hydrogen is produced and stored for power generation from solar energy by utilizing solid oxide electrolyzers and fuel cells. Ammonia, urea, and synthetic natural gas are produced to mitigate hydrogen transportation and storage complexities and act as energy carriers or valuable chemical products. The system is analyzed from a thermodynamic perspective, the exergy destruction rates are compared, and the effects of different parameters are evaluated. The overall system's energy efficiency is 56%, while the exergy efficiency is 14%. The highest exergy destruction occurs in the Rankine cycle with 48 MW. The mass flow rates of the produced chemicals are 0.064, 0.088, and 0.048 kg/s for ammonia, urea, and SNG, respectively. |
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| Keywords: | Exergy efficiency Fuel cell Hydrogen storage Renewable energy Solar hydrogen |
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