Utilizing hydrogen pressure energy by expansion machines – PEM fuel cells in mobile and other potential applications

被引：0
|
作者：
Singer G. [1 ]
Köll R. [1 ]
Aichhorn L. [1 ]
Pertl P. [1 ]
Trattner A. [1 ,2 ]
机构：
[1] HyCentA Research GmbH, Inffeldgasse 15, Graz
[2] Graz University of Technology, Institute of Thermodynamics and Sustainable Propulsion Systems, Inffeldgasse 19, Graz
来源：
Applied Energy | 2023年 / 343卷
关键词：
Design concept; Expansion machine; Potential analysis; Pressure energy; Reciprocating piston expander; Turbomachine;
D O I：
10.1016/j.apenergy.2023.121056
中图分类号：
学科分类号：
摘要：
Hydrogen is an important energy carrier for a future without fossil fuels, but PEM fuel cell systems have to utilize the entire available energy as efficiently as possible. Hydrogen is typically stored at a maximum pressure of up to 700 bar and is supplied to the anode system at about 15 bar. Normally, a pressure reduction valve expands the hydrogen between 700 and 15 bar, but the pressure energy is unused during expansion. In this paper, different expansion machines are analyzed and the most attractive concepts are studied in detail to regain the expansion energy. Finally, a piston expansion system concept is designed with an estimated power output of 10 kW and a driving range increase of 2%, reflecting the high potential for efficiency improvement. © 2023 The Author(s)
引用
收藏
相关论文
共 26 条
123