Comparison of a fuel-driven and steam-driven ejector in solid oxide fuel cell systems with anode off-gas recirculation: Part-load behavior

被引：37
作者：
Engelbracht, Maximilian [1 ]
Peters, Roland [1 ]
Blum, Ludger [1 ]
Stolten, Detlef [1 ]
机构：
[1] Forschungszentrum Julich, Inst Energy & Climate Res Electrochem Proc Engn I, D-52425 Julich, Germany
来源：
JOURNAL OF POWER SOURCES | 2015年 / 277卷
关键词：
Fuel cells; SOFC; Anode recycling; Steam ejector; Fuel ejector; Part load; PERFORMANCE EVALUATION; POWER-SYSTEMS; SOFC SYSTEMS; PROPANE; RECYCLE; DESIGN; UNIT;
D O I：
10.1016/j.jpowsour.2014.12.009
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：
This paper investigates the use of ejectors for recirculating anode off-gas in an SOFC system, focusing on the part-load capability of two different systems. In the first system, recirculation was enabled by a fuel-driven ejector. The part-load threshold of this system was determined by carbon formation and was 77.8% assuming a fuel utilization of 70% and suitable ejector geometry. The second system was based on a steam-driven ejector. The simulation results for this system showed an improved part-load capability of 37.8% as well as a slightly improved electrical efficiency. Here, the minimal part load was determined by the condensation temperature of the condenser used in the system. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：251 / 260
页数：10
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