Gas turbine size optimization in a hybrid system considering SOFC degradation

被引：59

作者：

Cuneo, A. ^{[1
]}

Zaccaria, V. ^{[2
]}

Tucker, D. ^{[3
]}

Sorce, A. ^{[1
]}

机构：

[1] Univ Genoa, Thermochem Power Grp, Via Montallegro 1, I-16145 Genoa, Italy

[2] Malardalen Univ, Hogskoleplan 1, S-72320 Vasteras, Sweden

[3] US DOE, Natl Energy Technol Lab, 3610 Collins Ferry Rd, Morgantown, WV 26507 USA

来源：

APPLIED ENERGY | 2018年 / 230卷

关键词：

Hybrid systems; Design optimization; SOFC degradation; Economic analysis; OXIDE FUEL-CELL; POWER; DESIGN; TEMPERATURE; SIMULATION; MODEL; GT;

D O I：

10.1016/j.apenergy.2018.09.027

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The coupling of a pressurized solid oxide fuel cell (SOFC) and a gas turbine has been proven to result in extremely high efficiency and reduced emissions. The presence of the gas turbine can improve system durability compared to a standalone SOFC, because the turbomachinery can supply additional power as the fuel cell degrades to meet the power request. Since performance degradation is an obstacles to SOFC systems commercialization, the optimization of the hybrid system to mitigate SOFC degradation effects is of great interest. In this work, an optimization approach was used to innovatively study the effect of gas turbine size on system durability for a 400 kW fuel cell stack. A larger turbine allowed a bigger reduction in SOFC power before replacing the stack, but increased the initial capital investment and decreased the initial turbine efficiency. Thus, the power ratio between SOFC and gas turbine significantly influenced system economic results.

引用

页码：855 / 864

页数：10

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