期刊
ENERGY
卷 134, 期 -, 页码 1013-1028出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2017.06.064
关键词
SOFC-ICGT; Blade cooled GT; Hybrid efficiency; Air film cooling; Hybrid cycle
Hybrid power systems are being developed by the integration of fuel cell with conventional gas turbine. Integration of solid oxide fuel cell (SOFC) with gas turbine (GT) to form a hybrid cycle based power plant has been considered as this is known to be highly efficient primarily performance of SOFC being not limited to Carnot efficiency. In this article, a novel and optimal thermal integration of SOFC with intercooled-recuperated gas turbine has been presented. The novel contribution of this work is integration of blade cooled gas turbine model to a SOFC model. 1st and 2nd law thermodynamic analysis has been performed analyzing the influence of compression ratio (r(p,c)) and turbine inlet temperature (TIT) on hybrid plant specific work, hybrid efficiency, blade coolant requirement and entropy generation rate. The performance of hybrid system has been optimized by entropy generation minimization, for this purpose a constraint based algorithm has been developed, which is a function of recirculation ratio, mass of fuel and TIT, based on which gas composition at the anode exit stream has been examined. It has observed that the entropy generation first increases and then decreases as TIT increases. Furthermore, a unique performance contour has also been plotted for proposed hybrid cycle, which can be utilized by power plant designer. At TIT 1800K and r(p,c) 20, optimal efficiency has been achieved with entropy minimization of 8.05 W/K. (C) 2017 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据