Multi-objective technoeconomic optimization of an off-grid solar-ground-source driven cycle with hydrogen storage for power and fresh water production |
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| Affiliation: | 1. Faculty of Mechanical Engineering-Energy Division, K.N. Toosi University of Technology, P.O. Box: 19395-1999, No. 15-19, Pardis St., Mollasadra Ave., Vanak Sq., Tehran 1999 143344, Iran;2. Department of Chemical Engineering, University of Guilan, Rasht, Iran;1. Design Factory Melbourne, Swinburne University of Technology, Hawthorn, Victoria, 3122, Australia;2. Victorian Hydrogen Hub, Swinburne University of Technology, Hawthorn, Victoria, 3122, Australia;1. School of Physics and Technology, University of Jinan, Jinan 250022, Shandong Province, PR China;2. School of Mathematics and Physics, Anhui University of Technology, Ma''anshan 243032, Anhui Province, PR China;1. Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/Energy Storage Research Center, School of Energy and Environment, Southeast University, No. 2 Si Pai Lou, Nanjing, Jiangsu 210096, PR China;2. College of Material Science and Technology, Southeast University, No. 2 Si Pai Lou, Nanjing, Jiangsu 210096, PR China;3. Engineering Research Center of Nano-Geo Materials of Ministry of Education, Department of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan, 430074, China;1. Laboratory of Alternative Fuels and Environmental Catalysis (LAFEC), Department of Chemical Engineering, University of Western Macedonia, GR-50100, Greece;2. Institut für Anorganische und Angewandte Chemie, Universität Hamburg, Martin-Luther-King Platz 6, 20146, Hamburg, Germany;3. Biomass Energy and Environmental Engineering Research Center, Beijing University of Chemical Technology, Beijing, 100029, China;4. Department of Chemical Engineering and Environmental Technology, Universidad de Zaragoza, Campus Río Ebro-Edificio I+D, 50018 Zaragoza, Spain;5. Instituto de Nanociencia y Materiales de Aragón (INMA), Universidad de Zaragoza- CSIC, c/ María de Luna 3, 50018, Zaragoza, Spain;6. Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBERBBN, 28029, Madrid, Spain;7. The Surface Analysis Laboratory, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 4DL, UK;1. Federal Scientific Agroengineering Center VIM, 1st Institutsky Proezd, 5, 109428, Moscow, Russia;2. Russian University of Transport, 127994, Moscow, Russia |
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| Abstract: | Utilizing renewable sources integrated with thermodynamic cycles has been gaining attention in recent years due to being economical and environment-friendly, among which, renewable-energy driven water and power generation systems have shown promising outcomes. In the field of renewable-energy based multi-generation systems (MGS), many recent works have focused on energy analysis or simple optimization. Therefore, in this study, an off-grid solar-geothermal cogeneration system which is able to produce power by Kalina cycle, hydrogen by proton exchange membrane electrolyzer (PEMEC), and freshwater by a multi-effect desalination (MED) unit, was investigated and optimized in terms of economic and energy viewpoints. Unlike previous studies, in this work, a comprehensive multi-objective optimization (MOO) was employed on the system in order to find the optimal working condition. The decision variables of the optimization include flat plate collector area, water mass flow, and ammonia concentration of the Kalina cycle, and the objective functions were levelized cost of electricity (LCOE), payback period (PBP), the overall energy efficiency of the system, and freshwater production of MED unit. Final results show that the system, in its optimum condition, is able to produce 182.09 m3.day−1 fresh water, with energy efficiency, PBP, and LCOE equal to 6.23%, 5.19 years and 0.238 $.kWh−1, respectively. |
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| Keywords: | Optimization Ground-source system Kalina cycle Renewable energy based multi-generation Desalination Hydrogen production |
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