The thermal management of a proton exchange membrane fuel cell (PEMFC) is crucial for vehicles. This paper presents new simulation model the water-cooled PEMFC stacks automotive vehicles and cooling systems. system considers both stack compressed air through intercooler. Theoretical analysis was carried out to calculate heat dissipation requirements system. case study results show that more tha...

According to finite-time thermodynamics, an irreversible high temperature proton exchange membrane fuel cell (HT-PEMFC) model is established, and the mathematical expressions of output power, energy efficiency, exergy efficiency ecological coefficient performance (ECOP) HT-PEMFC are deduced. The ECOP a step forward in optimizing relationship between power dissipation, which more line with princ...

Based on a coupled finite element method (FEM) and computational fluid dynamics (CFD) model, the structural deformation performance of proton exchange membrane fuel cell (PEMFC) under different water contents are studied. The absorption behavior is investigated experimentally to obtain its expansion coefficient with content, Young’s modulus catalyst (CL) obtained through tensile experiment. sim...

Data are presented to show the transient response of a proton exchange membrane fuel cell (PEMFC) subjected to change in the load. Overshoot and undershoot behaviors of the steady-state current density were observed for various rates of change in the voltage during constant inlet flow rate conditions. The results of these experiments with a 25 cm2 triple serpentine flow field indicate a correla...

This paper presents the development of the electrical and mathematical models which is able to simulate the static and dynamic phenomena of proton exchange membrane fuel cell (PEMFC). The models were validated against the current distribution data experimentally measured earlier. A parallel computational methodology was employed to substantially reduce the computational time and to make large-s...

Proton exchange membrane fuel cells have been receiving more and more attention these recent years. Maintaining a fuel cell system in correct operating conditions requires good controller. Based on the mathematical model of proton exchange membrane fuel cells described in this paper, the fuzzy logic controllers was designed for the proton exchange membrane fuel cell to make it possible to outpu...

With the increasing popularity of fuel cells, improving their power density and cell system efficiency has become very topical. This study used curved wing vortex generator to generate a secondary flow in cathode channel improve performance proton exchange membrane (PEMFC). The wing's structure arrangement effects on cells were numerically simulated. Next, summarize combined operating condition...

Nonfluorinated sulfonic acid membranes are a group of promising candidate materials for the commercialization of proton exchange membrane fuel cell PEMFC technology. However, one of the main obstacles is that the harsh fuel cell environment may originate different modes of degradation and aging processes that result in either chemical or morphological alteration in these membranes. The effect o...

− The achievement of a proper and uniform pressure distribution between the membrane electrode assembly (MEA) and the bipolar plates of a proton exchange membrane fuel cell (PEMFC) is a key factor of stack design and assembly. Contact pressure levels are usually controlled by selecting an appropriate external clamping pressure on the endplates. Very few studies have been focused on the measurem...

The dependency of the Nernst potential in an operating proton exchange membrane fuel cell (PEMFC) on temperature, inlet pressure and relative humidity (RH) is examined, highlighting synergistic dependence measured open circuit (OCP) all three parameters. An alternative model equation derived to more appropriately represent PEMFC system where reactant concentration instead considered as activity...