Issues associated with modelling of proton exchange membrane fuel cell by computational fluid dynamics

Bednarek, Tomasz; Tsotridis, Georgios

doi:10.1016/j.jpowsour.2017.01.059

Cited by 42 publications

(26 citation statements)

References 123 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Many studies have employed a single-phase model to predict the DMFC performance, 15,17,29,30,34 the results of which are in good agreement with the measurements. In addition, a single-phase model is much simpler than a two-phase model.…”

Section: A Single-phase Flow Is Considered In All Domainsmentioning

confidence: 73%

“…The charge conservation is applied through Ohm's law, as given by Equation (1), 34 where σ is the conductivity (S/ m), φ is the phase potential (V), and S is the charge source term (A/m 3 ), which does not appear in this domain because no electrons are generated. The current collector only includes an electron conductor at the anode and cathode sides.…”

Section: Governing Equationsmentioning

confidence: 99%

See 1 more Smart Citation

Performance enhancement of direct methanol fuel cell using multi‐zone narrow flow fields

2019

View full text Add to dashboard Cite

Summary New serpentine and spiral flow field configurations were developed to enhance the performance of direct methanol fuel cells (DMFCs). The new configurations are based on two primary concepts, namely, narrowing the flow field and partitioning the total active area of the fuel cell. Three flow channel heights of 0.8, 0.4, and 0.2 mm were investigated in serpentine and spiral flow fields. The main active area is considered a single zone and is partitioned into two‐ and four‐zone designs while maintaining the total inlet mass flow rate of the reactant and oxidant. To determine the performance parameters of the newly proposed designs, a three‐dimensional single‐phase isothermal model was developed, numerically simulated, and validated through experimental measurements. The findings of the current study indicate that a serpentine flow field configuration with a channel height of 0.2 mm and two zones attains an enhancement of the net power density of 37% compared to a conventional single‐zone design with a flow channel height of 0.8 mm. Similarly, for a spiral flow field design, the maximum net power density increased by 26% using a two‐zone configuration with a channel height of 0.2 mm, in comparison to the conventional design of a single‐zone and a flow channel height of 0.8 mm. The newly developed designs utilize the lower height of the flow fields to decrease the dimensions of the fuel cell stacks and reduce the material costs required.

show abstract

Section: A Single-phase Flow Is Considered In All Domainsmentioning

confidence: 73%

Section: Governing Equationsmentioning

confidence: 99%

Performance enhancement of direct methanol fuel cell using multi‐zone narrow flow fields

2019

View full text Add to dashboard Cite

show abstract

“…Basic assumptions are made to simplify the model and reduce calculation consumption: The surfaces of PEMFC and the gas inlet temperature are constantly at 80°C. The PEMFC is under steady state. The porosity and conductivity in porous zone (CLs and GDLs) are uniform and isotropic. The reactant gases are incompressible ideal gases. The laminar flow is supposed in the flow channel. …”

Section: Model Descriptionmentioning

confidence: 99%

“…Computational fluid dynamics (CFD) simulation can provide detailed information of PEMFC that cannot be tested directly in the experiments, eg, distributions of the local current flux, gases concentration, temperature, and membrane conductivity. Consequently, many researchers have made great efforts to exploit CFD modeling of PEMFCs from one‐dimensional (1D), two‐dimensional (2D) to three‐dimensional (3D) . Nowadays, 3D numerical models are the mainstream to study the electrochemical and multiphysics processes of PEMFC.…”

Section: Introductionmentioning

confidence: 99%

“…Choopanya and Yang presented a mesh strategy to reduce the number of mesh elements without sacrificing the simulation precision. Bednarek and Tsotridis presented a mitigation method to ensure that the simulation has correctly converged. Nowadays, the CFD method plays a more and more important role in PEMFC analysis as alternative or supplementary to experimental studies.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analyze the effects of flow mode and humidity on PEMFC performance by equivalent membrane conductivity

Wei

Zhang

et al. 2019

Int J Energy Res

View full text Add to dashboard Cite

Summary A three‐dimensional and two‐phase numerical model is developed for a 25‐cm2 proton exchange membrane fuel cell (PEMFC) to investigate the effects of flow mode (coflow and counterflow) and relative humidity (anode 0%/100%; cathode 60%/100%) on the cell performance. Experimental studies are performed to validate this developed model. An equivalent membrane conductivity is proposed to describe the match level between current flux and membrane conductivity. It is found that the cell performance is enhanced under low relative humidity conditions because of the optimized equivalent membrane conductivity. More specifically, the voltage is improved from 0.611 to 0.637 V, and the equivalent membrane conductivity is enhanced from 10.35 to 11.11 S m−1 by replacing the coflow mode with counterflow mode at 1000 mA cm−2 when anode gas is dry and cathode gas is 100% hydrated. Both the anode and cathode relative humidities show an obvious influence on the PEMFC performance, and a suitable inlet humidity could ensure adequate hydration of membrane and avoid water flooding in gas diffusion layers simultaneously.

show abstract

Computational Fluid Dynamics Simulation of Transport Phenomena in Proton Exchange Membrane Fuel Cells

Mirzaie¹,

Esmaeilpour²

2023

Proton Exchange Membrane Fuel Cells

View full text Add to dashboard Cite

Issues associated with modelling of proton exchange membrane fuel cell by computational fluid dynamics

Cited by 42 publications

References 123 publications

Performance enhancement of direct methanol fuel cell using multi‐zone narrow flow fields

Performance enhancement of direct methanol fuel cell using multi‐zone narrow flow fields

Analyze the effects of flow mode and humidity on PEMFC performance by equivalent membrane conductivity

Computational Fluid Dynamics Simulation of Transport Phenomena in Proton Exchange Membrane Fuel Cells

Contact Info

Product

Resources

About