scholarly journals Performance analysis of AS-SOFC fuel cell combining single and sinusoidal flow field: numerical study

2021 ◽  
Vol 6 ◽  
pp. 18
Author(s):  
Sabrina Horr ◽  
Hocine Mohcene ◽  
Hamza Bouguettaia ◽  
Hocine Ben Moussa
Keyword(s):  
Fuel Cell ◽  
Flow Field ◽  
Mass Fraction ◽  
Numerical Study ◽  
Operating Voltage ◽  
Ansys Fluent ◽  
Heat Flows ◽  
Ohmic Losses ◽  
Sinusoidal Flow ◽  
Single Flow

The performance of a solid oxide fuel cell (SOFC) was examined using 3D computational fluid dynamics to model mass and heat flows inside the channels. In the present investigation, a SOFC fuel cell with a new flow field based on a sinusoidal flow has been studied. The latter was tested and compared with a single flow using ANSYS FLUENT. The obtained results showed that at a given operating voltage, the maximum power for the sinusoidal and the single flow fields were 1.43 and 1.35 W/cm2, respectively. By taking in addition, into account the concentration, activation and Ohmic losses; it was noticed that the distribution of velocity and temperature for the sinusoidal flow led to bettered results. Furthermore, it was observed that the maximum use of H2 mass fraction consumed in sinusoidal and single flow field designs were 60% and 55% respectively. Similarly, the highest H2O mass fraction values produced for the sinusoidal and single flow designs were 42% and 34% respectively. This model was validated and confronted to previous data. The present results agree well with reported studies in literature.

Numerical study of serpentine flow field designs effect on proton exchange membrane fuel cell (PEMFC) performance

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Venkateswarlu Velisala ◽  
Gandhi Pullagura ◽  
Naga Srinivasulu Golagani
Keyword(s):  
Fuel Cell ◽  
Flow Field ◽  
Proton Exchange Membrane ◽  
Numerical Study ◽  
Field Performance ◽  
Flow Fields ◽  
Proton Exchange ◽  
Ansys Fluent ◽  
Serpentine Flow Field ◽  
Exchange Membrane

AbstractThe design of flow field greatly influences Proton Exchange Membrane Fuel Cell (PEMFC) performance, as it not only distributes the reactants, also removes the product (water) from the cell. Improper water removal blocks the reaction sites, which results in mass transport losses. A complete 3-D numerical model of PEMFC with a single serpentine (1-S), double serpentine (2-S),triple serpentine (3-S) and 3-2-1 serpentine flow fields with round corner was designed with the help of commercial Computational Fluid Dynamics (CFD) code ANSYS FLUENT. Simulations were carried out to investigate the effect of four flow fields on distribution of pressure, mass fraction of H2, O2, current flux density distribution, water content of membrane, and liquid water activity in the flow channels as well as the functioning of cells. Performance properties of proposed four designs were evaluated and found that 3-2-1 serpentine flow field performance is better than the 1-S, 2-S, and 3-S flow fields for the given flow rates of reactants and this 3-2-1 serpentine flow field model was validated with literature experimental data. The results also show that the velocity in channels increases with a decrease in the number of flow passes, which improve the reactions in the catalyst layers, reaction product removal from the cell thus reduces the concentration losses and improves the cell performance.

Numerical study on the performance of fuel cell with wavy flow field plate

Ionics ◽  
2020 ◽  
Vol 26 (12) ◽  
pp. 6245-6253
Author(s):  
Hao Hu ◽  
Xiaoming Xu ◽  
Nan Mei ◽  
Guangyao Tong
Keyword(s):  
Fuel Cell ◽  
Flow Field ◽  
Numerical Study ◽  
Field Plate

Numerical Study on Proton Exchange Membrane Fuel Cell with 2mm×2mm and 25cm2 Serpentine Flow Channel

2014 ◽  
Vol 592-594 ◽  
pp. 1687-1691
Author(s):  
Pal Vaibhav ◽  
P. Karthikeyan ◽  
R. Anand
Keyword(s):  
Fuel Cell ◽  
Flow Field ◽  
Fossil Fuels ◽  
Proton Exchange Membrane ◽  
Numerical Study ◽  
Proton Exchange ◽  
Three Dimensional Model ◽  
Serpentine Flow Field ◽  
Exchange Membrane ◽  
Flow Field Design

As fossil fuels are becoming less reliable and more costly, the Proton Exchange Membrane Fuel Cell (PEMFC) is emerging as the primary candidate to replace the stationary and transport applications. In this study numerical simulation on PEMFC is done by commercially available Computational Fluid Dynamics (CFD) software. A three-dimensional, model of a single PEM Fuel cell with serpentine flow field design has been used for the study. The numerical model is 3-D steady, incompressible, single phase and isothermal includes the governing of mass, momentum, energy, and species along with electrochemical equations. All of these equations are simultaneously solved in order to get current flux density and H2, O2and H2O fractions along the flow field design.

The Effect of Velocity in High Swirling Flow in Unconfined Burner

2014 ◽  
Vol 69 (6) ◽  
Author(s):  
Norwazan A. R ◽  
Mohammad Nazri Mohd. Jaafar
Keyword(s):  
Flow Field ◽  
Turbulent Flows ◽  
Recirculation Zone ◽  
Swirling Flow ◽  
Numerical Study ◽  
Tangential Velocity ◽  
Reacting Flow ◽  
Ansys Fluent ◽  
Inlet Velocity ◽  
Burner Exit

This paper presents a numerical simulation of swirling turbulent flows in combustion chamber of unconfined burner. Isothermal flows with three different swirl numbers using axial swirler are used to demonstrate the effect of flow in axial velocity and tangential velocity on the center recirculation zone. The significance of center recirculation zone is to ensure a good mixing of air and fuel in order to get a better combustion. The inlet velocity, U0 is 30 m/s entering into the burner through the axial swirler that is represents a high Reynolds number. A numerical study of non-reacting flow in the burner region is performed using ANSYS Fluent. The Reynolds–Averaged Navier–Stokes (RANS) standard k-ε turbulence approach method was applied with the eddy dissipation model. The paper focuses the flow field behind the axial swirler downstream that determined by transverse flow field at different on radial distances. The results of axial and tangential velocity were normalized with the inlet velocity. The velocity profiles are different after undergoing the different swirler up to the burner exit. However, the results of velocity profile showed that the high SN gives a better swirling flow patterns. 

Numerical study on channel size effect for proton exchange membrane fuel cell with serpentine flow field

2010 ◽  
Vol 51 (5) ◽  
pp. 959-968 ◽  
Author(s):  
Xiao-Dong Wang ◽  
Wei-Mon Yan ◽  
Yuan-Yuan Duan ◽  
Fang-Bor Weng ◽  
Guo-Bin Jung ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Flow Field ◽  
Size Effect ◽  
Proton Exchange Membrane ◽  
Numerical Study ◽  
Proton Exchange ◽  
Channel Size ◽  
Serpentine Flow Field ◽  
Exchange Membrane

Fabrication of Membrane-Electrolyte Assembly with Nanocomposite for Direct Methanol Fuel Cell

2012 ◽  
Vol 566 ◽  
pp. 386-389
Author(s):  
Ho Chang ◽  
Mu Jung Kao ◽  
Kuang Ying Lee
Keyword(s):  
Fuel Cell ◽  
Flow Field ◽  
Direct Methanol Fuel Cell ◽  
Operating Voltage ◽  
Mixed Solution ◽  
Field Plate ◽  
Serpentine Flow Field ◽  
Direct Methanol ◽  
Electronic Load ◽  
Methanol Fuel Cell

This study aims to deal with the preparation of membrane-electrolyte assembly (MEA) of Pt/Ru/C nanocomposite as well as connecting to a direct methanol fuel cell and using PCB process packaging to test the efficiency of the DMFC. The components assembled in DMFC are including anode flow field plates, MEA and current collector.Using PCB boards for the anode flow field plates as well as the electicity collector plates and the type of flow field plate adopts serpentine flow field. For the efficiency of DMFC, liquid motors are used to press methanol mixed solution at specific temperature into DMFC. Besides, the cathode of DMFC adopts natural-breath method with air and uses DC electronic load to activate DMFC to investigate operating voltage and further to set constant voltage to measure current to calculate the efficiency of DMFC. Initial results of I-V curve show that self-developed MEA of Pt/Ru/C nanocomposite can enhance around 0.2% current density of DMFC after being assembled like commercial MEA

Unsteady three-dimensional numerical study of mass transfer in PEM fuel cell with spiral flow field

2017 ◽  
Vol 42 (2) ◽  
pp. 1237-1251 ◽  
Author(s):  
Tamerabet Monsaf ◽  
Ben Moussa Hocine ◽  
Sahli Youcef ◽  
Mohammedi Abdallah
Keyword(s):  
Mass Transfer ◽  
Fuel Cell ◽  
Flow Field ◽  
Numerical Study ◽  
Three Dimensional ◽  
Pem Fuel Cell ◽  
Spiral Flow

Numerical study on a novel 3D cathode flow field and evaluation criteria for the PEM fuel cell design

Energy ◽  
2018 ◽  
Vol 161 ◽  
pp. 28-37 ◽  
Author(s):  
Yonghua Cai ◽  
Zhou Fang ◽  
Ben Chen ◽  
Tianqi Yang ◽  
Zhengkai Tu
Keyword(s):  
Fuel Cell ◽  
Flow Field ◽  
Numerical Study ◽  
Evaluation Criteria ◽  
Pem Fuel Cell ◽  
Cell Design ◽  
3D Cathode
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