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https://hdl.handle.net/11147/12303
Title: | Exergoeconomic analysis and optimization of a high-efficient multi-generation system powered by Sabalan (Savalan) geothermal power plant including branched GAX cycle and electrolyzer unit | Authors: | Seiiedhoseiny, Miryasin Khani, Leyla Mohammadpourfard, Mousa Gökçen Akkurt, Gülden Tabriz University Tabriz University Tabriz University 01. Izmir Institute of Technology |
Keywords: | Branched GAX cycle Exergoeconomic Geothermal energy Multi-generation |
Issue Date: | Jul-2022 | Publisher: | Elsevier | Abstract: | Employing suitable subsystems to reach high efficiency and low cost in renewable-based power plants is more crucial. The geothermal energy heat source is located in many countries, but this has never been investigated to run a multi-generation system, including a branched GAX cycle and an electrolyzer. In this path, a high-efficient multi-generation system powered by a Sabalan (Savalan) geothermal power plant consisting of a single flash cycle, a branched GAX cycle, and an electrolyzer is presented and scrutinized from thermodynamic and exergoeconomic viewpoints. In the end, a two-objective optimization, by using the Total Unit Cost of Product (TUCP) and energy efficiency as objectives, is utilized to find the optimum operating conditions. Critiques and studies of variables reveal that the produced hydrogen rate remains unchanged at 5.655 kg/h by changing the degassing value and temperature of the generator, condenser 2, and evaporator. By increasing the flash tank pressure from 5.2 bar to 7 bar, the cooling and heating loads rise about 108.4%, while the net electricity falls from 3977 kW to 3506 kW. Interestingly, the TUCP has a minimum value at the evaporator temperature of 273 K and condenser 2 temperature of 322.3 K. The optimization results indicate the values of the produced hydrogen rate and net electricity with 5.85 kg/h and 4187 kW are more than those of the base case. Also, the optimal values are 7.046 $/GJ, 36.82%, and 65.42% for the TUCP and energy and exergy efficiencies, respectively. | URI: | https://doi.org/10.1016/j.enconman.2022.115996 https://hdl.handle.net/11147/12303 |
Appears in Collections: | Energy Systems Engineering / Enerji Sistemleri Mühendisliği Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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1-s2.0-S0196890422007890-main.pdf Until 2024-05-01 | Article (Makale) | 3.23 MB | Adobe PDF | View/Open Request a copy |
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