Abstract
The flow field structure plays the key roles in the operating reliability and power output of proton exchange membrane fuel cell (PEMFC). This study investigates and compares two typical structural parameters of PEMFC with the trapezoidal flow channel (TFC) and the trapezoidal flow channel with block (TFCB). A three-dimensional (3-D) multiphase TFC model is first developed, and then the multi-objective optimization is performed by using the trained artificial neural network (ANN) surrogate model and non-dominated sorting genetic algorithm (NSGA-II). Finally, the technique for order preference by similarity to an ideal solution (TOPSIS) is used to investigate the optimized structural parameters of TFC. The results show the net power output and the oxygen uniformity index of the optimized TFC are increased by 19.77% and 21.92% compared with the straight flow channel (SFC). Furthermore, it is also found using block in the trapezoidal flow channel (TFCB) can increase the performance of PEMFC, and it exhibits a 25.10% improvement for the net power output and 27.88% for oxygen uniformity index, respectively.
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Abbreviations
- a :
-
Water activity
- ANN:
-
Artificial neural network
- BP:
-
Bipolar plate
- CFD:
-
Computational fluid dynamics
- \({C}_{k}\) :
-
Species concentration (mol/m3)
- CL:
-
Catalytic layer
- \({c}_{p}\) :
-
Specific heat capacity at a constant pressure (J/(kg·K))
- \({D}_{k}^{eff}\) :
-
Effective species diffusion coefficient (m2/s)
- T :
-
Temperature (K)
- FC:
-
Flow channel
- GDL:
-
Gas diffusion layer
- \(j\) :
-
Exchange current density (A/m3)
- K :
-
Absolute permeability (m2)
- \({k}^{eff}\) :
-
Effective thermal conductivity (W/(m·K))
- LHS:
-
Latin hypercube sampling
- PEM:
-
Proton exchange membrane
- NSGA-II:
-
Non-dominated sorting genetic algorithm
- p :
-
Pressure (Pa)
- p c :
-
Capillary pressure (Pa)
- PEMFC:
-
Proton exchange membrane fuel cell
- R :
-
Universal gas constant (J/(kg·mol))
- R m :
-
Proton current source term
- R s :
-
Electron current source term
- r w :
-
Phase transition source term
- SFC:
-
Straight flow channel
- S m :
-
Mass source term
- S M :
-
Momentum source term
- S k :
-
Concentration source term
- S Q :
-
Energy source term
- SVM:
-
Support vector machine
- s :
-
Liquid water volume fraction
- TFC:
-
Trapezoidal flow channel
- TFCB:
-
Trapezoidal flow channel with block
- TOPSIS:
-
Technique order preference by similarity to an ideal solution
- \(\overrightarrow{u}\) :
-
Velocity vector (m/s)
- \({V}_{\text{cell}}\) :
-
Operating voltage (V)
- \({V}_{oc}\) :
-
Open circuit voltage (V)
- \(\phi\) :
-
Electric potential (V)
- \(\lambda\) :
-
Water content
- \(\rho\) :
-
Density (kg/m3)
- \(\mu\) :
-
Dynamic viscosity (Pa·s)
- \(\alpha\) :
-
Transfer coefficient
- \(\varepsilon\) :
-
Porosity
- \(\nabla\) :
-
Hamiltonian operator
- \(\theta\) :
-
Contact angle (◦)
- \(\zeta\) :
-
Specific active surface area (1/m)
- \(\eta\) :
-
Overpotential (V)
- \(\sigma\) :
-
Electronic conductivity \(\left(1/\left(\Omega \cdot {\text{m}}\right)\right)\)
- \({\sigma }_{t}\) :
-
Surface tension (N/m)
- \(\chi\) :
-
Molar fraction
- \(\gamma\) :
-
Concentration dependence
- an :
-
Anode
- cat :
-
Cathode
- l :
-
Liquid water
- m :
-
Membrane phase
- ref :
-
Reference
- s :
-
Solid phase
- sat :
-
Saturation
- wv :
-
Water vapor
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Funding
This work was supported by the National Natural Science Foundation of China (No. 62192753).
National Natural Science Foundation of China,62192753
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Changjiang Wang: methodology, software, data curation, validation, writing—original draft. Zeting Yu: funding acquisition, project administration, writing—review and editing. Haonan Wu: writing—review and editing. Daohan Wang: writing—review and editing.
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Wang, C., Yu, Z., Wu, H. et al. Optimization design of trapezoidal flow field proton exchange membrane fuel cell combined with computational fluid dynamics, surrogate model, and multi-objective optimization algorithm. Ionics (2024). https://doi.org/10.1007/s11581-024-05494-5
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DOI: https://doi.org/10.1007/s11581-024-05494-5