Exergy analysis of an integrated solid oxide fuel cell and organic Rankine cycle for cooling, heating and power production
Exergy analysis of an integrated solid oxide fuel cell and organic Rankine cycle for cooling, heating and power production
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DOI：
10.1016/j.jpowsour.2009.10.075
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发表时间：
2010-04
影响因子：
9.2
通讯作者：
F. Al-Sulaiman;I. Dincer;F. Hamdullahpur
中科院分区：
文献类型：
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作者：
F. Al-Sulaiman;I. Dincer;F. Hamdullahpur
本研究探讨一种新的系统，结合了固体氧化物燃料电池（SOFC）和有机朗肯循环（ORC）的冷却，加热和发电（三联产），通过分析。该系统由SOFC、ORC、换热器和单效吸收式制冷机组成。该系统被建模为产生约500 kW的净电力。研究结果表明，采用三联产系统比单独采用动力循环系统的效率提高3-25%。随着电流密度的增加，功率循环、冷热电联产、热热电联产和三联产的效率降低。此外，研究表明，改变涡轮机入口压力和有机朗肯循环泵入口温度对动力循环、冷热电联供、热热电联供和三电联供的火用效率影响不大。研究还表明，ORC蒸发器、SOFC入口空气换热器和加热过程换热器是重要的火用损失源。
The study examines a novel system that combined a solid oxide fuel cell (SOFC) and an organic Rankine cycle (ORC) for cooling, heating and power production (trigeneration) through exergy analysis. The system consists of an SOFC, an ORC, a heat exchanger and a single-effect absorption chiller. The system is modeled to produce a net electricity of around 500kW. The study reveals that there is 3–25% gain on exergy efficiency when trigeneration is used compared with the power cycle only. Also, the study shows that as the current density of the SOFC increases, the exergy efficiencies of power cycle, cooling cogeneration, heating cogeneration and trigeneration decreases. In addition, it was shown that the effect of changing the turbine inlet pressure and ORC pump inlet temperature are insignificant on the exergy efficiencies of the power cycle, cooling cogeneration, heating cogeneration and trigeneration. Also, the study reveals that the significant sources of exergy destruction are the ORC evaporator, air heat exchanger at the SOFC inlet and heating process heat exchanger.