Proposal and thermodynamic performance study of a novel LNG-fueled SOFC-HAT-CCHP system with near-zero CO2 emissions |
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| Affiliation: | 1. College of Machinery and Transportation Engineering, China University of Petroleum, Beijing, 102249, PR China;2. Beijing Key Laboratory of Process Fluid Filtration and Separation, Beijing, 102249, PR China;1. Department of Energy and Power Engineering, Ludong University, 186 Hongqi Middle Road, Yantai 264025, Shandong, China;2. School of Civil Engineering, Ludong University, 186 Hongqi Middle Road, Yantai 264025, Shandong, China;1. University Institute of Technology, Department GIM, Lebanese University, Saida, Lebanon;2. Normandie Univ, UNICAEN, LUSAC, 50000 Saint Lô, France;1. Institute of Process Systems Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116023, Liaoning, China;2. Key Laboratory of Liaoning Province for Desalination, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116023, Liaoning, China;1. Department of Renewable Energies and Environment, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran;2. Department of Energy Engineering, Faculty of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran;3. Department of Mechanical Engineering, Centre for Advanced Composite Materials, The University of Auckland, Auckland, New Zealand |
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| Abstract: | The cold energy in many liquefied natural gas (LNG) satellite stations is directly carried away by air or seawater. This causes cold energy waste and environmental cold pollution. To solve this problem, a combined power, heating and cooling system (CCHP) driven by LNG is established based on solid oxide fuel cell (SOFC) and humid air turbine (HAT), namely SOFC-HAT-CCHP system, in which, not only can the waste cold energy cool compressor inlet air to decrease power consumption, but supply cold energy for the cold storage and CO2 recovery. Based on FORTRAN and Aspen Plus, the thermodynamic performance calculation models and the simulation work of the new system are carried out, such as the exergy and energy analysis, as well as the effects of the selected important variables. The results indicate that total exergy efficiency and total power efficiency are 64.7% and 54.4%, and the total thermal efficiency is 79.1%. Besides, the capture rate and purity of the CO2 are 98.7% and 98.9% respectively. The novel system is environmental protective, energy-saving and efficient, which may provide a new direction to reasonably utilize the waste cold energy in LNG satellite stations. |
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| Keywords: | SOFC-HAT-CCHP LNG satellite stations Cold energy utilization Thermodynamic performance analysis |
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