In vehicular fuel cells, hydrogen recirculation devices are employed to improve efficiency
and solve anode flooding problems. For motor-driven compressors, problems such as high …

To improve fuel utilization and prolong the lifespan of proton exchange membrane fuel cells
(PEMFCs), especially in automotive applications, a fuel recirculation operation is …

Ejectors are the main devices used to circulate high-temperature anode exhaust gases for
solid oxide fuel cells (SOFCs) for recovering and utilizing water vapor and heat. To optimize …

The anode subsystem of PEM fuel cells has to supply hydrogen in the required temperature,
pressure, mass flow and concentration range under all operating conditions. At present …

An anode gas recirculation ejector plays an important role in the performance and service
life of fuel cells. This study establishes a new quasi-two-dimensional ejector model by …

The main drivers for anode recirculation are the increased fuel efficiency and the
independence of the external water supply for the fuel pre-reforming process. Different …

Fuel recirculation is extremely important to fuel cell performance and durability, but it seems
not to receive enough consideration so far. We thoroughly reviewed active and passive fuel …

A new theoretical model for the convergent nozzle ejector in the anode recirculation line of
the polymer electrolyte membrane (PEM) fuel cell system is established in this paper. A …

The overall efficiency of a high-temperature fuel cell system can be enhanced by reuse of
the unreacted fuel and the thermal energy from the system exhaust gas. Much of the steam …

The present study aims to identify and recollect the articles existing in literature that deal
malfunction or failure causes of SOFC cells and relative diagnostic systems. This work is …