Thermo-economic optimization of an indirectly coupled solid oxide fuel cell/gas turbine hybrid power plant

被引：86
|
作者：
Cheddie, Denver F. [1 ]
机构：
[1] Univ Trinidad & Tobago, Ctr Engn Syst, Brechin Castle, Couva, Trinidad Tobago
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2011年 / 36卷 / 02期
关键词：
Thermo-economic model; Power plant optimization; Solid oxide fuel cell; Gas turbine; Indirect coupling; Lagrange Multipliers; EXERGY ANALYSIS; PERFORMANCE; MODEL; GT; SYSTEM; SIMULATION; ENERGY;
D O I：
10.1016/j.ijhydene.2010.10.089
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Power generation using gas turbine (GT) power plants operating on the Brayton cycle suffers from low efficiencies, resulting in poor fuel to power conversion. A solid oxide fuel cell (SOFC) is proposed for integration into a 10-MW GT power plant, operating at 30% efficiency, in order to improve system efficiencies and economics. The SOFC system is indirectly coupled to the GT, in order to minimize the disruption to the GT operation. A thermo-economic model is developed to simulate the hybrid power plant and to optimize its performance using the method of Lagrange Multipliers. It predicts an optimized power output of 18.9 MW at 48.5% efficiency, and a breakeven per-unit energy cost of USD 4.54 phi kW h(-1) for the hybrid system based on futuristic mass generation SOFC costs. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1702 / 1709
页数：8
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