modelMassFlow0thOrderDynamics
Extends from TransiEnt.Producer.Gas.Electrolyzer.Base.Physics.MassFlow.PartialMassFlow (partial model for PEM electrolyzer mass flow model).
Information
1. Purpose of model
This is a model to calculate mass flows in typical electrolyzers.
2. Level of detail, physical effects considered, and physical insight
Mass flow is modeled using expressions from Espinosa-López et al 2018. Dependent on stack current and Faraday's efficiency (1 by default).
3. Limits of validity
Original model developed and validated in the range of 20-60 °C with operating H2 and O2 tank pressure of 15-35 bar.
4. Interfaces
(no remarks)
5. Nomenclature
(no elements)
6. Governing Equations
Mass flow is modeled using Faraday's Law, as in Espinosa-López et al 2018.
7. Remarks for Usage
(no remarks)
8. Validation
Results have been validated against Espinosa-López et al 2018 published figures.
9. References
Manuel Espinosa-López, Philippe Baucour, Serge Besse, Christophe Darras, Raynal Glises, Philippe Poggi, André Rakotondrainibe, and Pierre Serre-Combe. Modelling and experimental validation of a 46 kW PEM high pressure water electrolyser. Renewable Energy, 119, pp. 160-173, 2018. doi: 10.1016/J.RENENE.2017.11.081.
10. Version History
Created by John Webster (jcwebste@edu.uwaterloo.ca) October 2018.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| SI.MolarMass | molar_mass_H2 | 2.016e-3 | Molar mass of hydrogen gas |
| Integer | n_cells | number of cells in series | |
| SI.Efficiency | eta_F | 1 | Faraday's efficiency, relating real H2 flow rate and theoretical |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| SI.MassFlowRate | m_flow_H2 (from PartialMassFlow) | mass flow rate of H2 gas | |
| SI.MolarFlowRate | n_flow_H2O (from PartialMassFlow) | Molar consummation rate of water | |
| SI.MolarFlowRate | n_flow_H2 (from PartialMassFlow) | Molar production rate of Hydrogen gas | |
| SI.MolarFlowRate | n_flow_O2 (from PartialMassFlow) | Molar production rate of Oxygen gas | |
| SI.Current | i_el_stack | current across the electrolyzer stack |