Energetic and exergetic analyses of a combined system consisting of a high-temperature polymer electrolyte membrane fuel cell and a thermoelectric generator with Thomson effect |
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| Affiliation: | 1. Department of Microelectronic Science and Engineering, Ningbo University, Ningbo 315211, China;2. Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China;3. College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, China;1. Department of Microelectronic Science and Engineering, Ningbo University, Ningbo 315211, China;2. Department of Physics, Xiamen University, Xiamen 361005, China;3. Department of Building and Real Estate, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China;4. College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China;1. Department of Mechanical Engineering, Inha University, 100 Inha-ro, Nam-Gu, Incheon, 22212, Republic of Korea;2. R&D Center, Korea Gas Corporation, 1248 Suin-ro, Sangrok-gu, Ansan-si, Gyeonggi-do, 15328, Republic of Korea;3. Fuel Cell Research Center, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon, 305-343, Republic of Korea;4. Doosan Corporation Fuel Cell, 75 Jeyakdanji-ro, Hyangnam-eup, Hwaseong-si, Gyeonggi-do, 18608, Republic of Korea;1. Department of Building and Real Estate, The Hong Kong Polytechnic University, Hong Kong, China;2. Department of Microelectronic Science and Engineering, Ningbo University, Ningbo 315211, China;3. School of Energy and Power Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China;1. Department of Mechanical Engineering, Semnan Science and Research Branch, Islamic Azad University, Semnan, Iran;2. Department of Mechanical Engineering, Semnan Branch, Islamic Azad University, Semnan, Iran;1. Department of Building and Real Estate, The Hong Kong Polytechnic University, Hong Kong, China;2. Department of Microelectronic Science and Engineering, Ningbo University, Ningbo, 315211, China |
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| Abstract: | A combined system model consisting of a high-temperature polymer electrolyte membrane fuel cell (HT-PEMFC), a regenerator and a thermoelectric generator (TEG) is proposed, where the TEG is applied to harness the generated waste heat in the HT-PEMFC for extra electricity production. The TEG considers not only the Seebeck effect and Peltier effect but also the Thomson effect. The mathematical expressions of power output, energy efficiency, exergy destruction rate and exergy efficiency for the proposed system are derived. The energetic and exergetic performance characteristics for the whole system are revealed. The optimum operating ranges for some key performance parameters of the combined system are determined using the maximum power density as the objective function. The combined system maximum power density and its corresponding energy efficiency and exergy efficiency allow 19.1%, 12.4% and 12.6% higher than that of a stand-alone HT-PEMFC, while the exergy destruction rate density is only increased by 8.6%. The system performances are compared between the TEG with and without the Thomson effect. Moreover, the impacts of comprehensive parameters on the system performance characteristics are discussed. The obtained results are helpful in developing and designing such an actual combined system for efficient and clean power production. |
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| Keywords: | High-temperature polymer electrolyte membrane fuel cell Thermoelectric generator Thomson effect Exergy analysis Exergy destruction rate |
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