1. Modeling and Designing of a Radial Anode Off-Gas Recirculation Fan for Solid Oxide Fuel Cell Systems
- Author
-
Jan Van herle, Zacharie Wuillemin, Stefan Diethelm, Jürg Schiffmann, and Patrick Hubert Wagner
- Subjects
Engineering ,Renewable Energy, Sustainability and the Environment ,business.industry ,Mechanical Engineering ,Nuclear engineering ,05 social sciences ,Energy Engineering and Power Technology ,Control engineering ,02 engineering and technology ,Aerodynamics ,021001 nanoscience & nanotechnology ,Electronic, Optical and Magnetic Materials ,Anode ,Impeller ,Cogeneration ,Mechanics of Materials ,0502 economics and business ,Benchmark (computing) ,Systems design ,Solid oxide fuel cell ,050207 economics ,0210 nano-technology ,business ,Electrical efficiency - Abstract
To improve the industry benchmark of solid oxide fuel cell (SOFC) systems, we consider anode off-gas recirculation (AOR) using a small-scale fan. Evolutionary algorithms compare different system design alternatives with hot or cold recirculation. The system performance is evaluated through multi-objective optimization (MOO) criteria, i.e., maximization of electrical efficiency and cogeneration efficiency. The aerodynamic efficiency and rotordynamic stability of the high-speed recirculation fan is investigated in detail. The results obtained suggest that improvements to the best SOFC systems, in terms of net electrical efficiency, are achievable, including for small power scale (10 kWe).
- Published
- 2017