.TransiEnt.Producer.Gas.Electrolyzer.PEMElectrolyzer_L2 .TransiEnt.Producer.Gas.Electrolyzer.PEMElectrolyzer_L2This model electrolyzer uses modular physics classes and a Specification record to describe a real-life electrolyzer system. The default model uses physical relationships taken from (Espinosa-López et al, 2018).
The user can select or create a model with system specific parameters. The desired input (electric power, current, current density or hydrogen mass flow) can be varied. Physics submodels can be replaced as desired, with essential definitions annotated. The water consumption, hydrogen output, and net- and gross-calorific energy conversion efficiency can be calculated. The user has the option of controlling pressure through gasPortOut and/or temperature through T_input as well.
Original model developed and validated in the range of 20-60 °C with operating pressure of 15-35 bar.
epp: electric power port, type can be chosen
gasPortOut: hydrogen outlet
i_dens_set: input for electric current density
i_el_stack_set: input for electric current
P_el_set: input for electric power
m_flow_H2_set: input for hydrogen mass flow
T_input: input for temperature
excessHeatFlowOut: Heat flow rate out port, equal to the cooling power used to regulate temperature at max temp.
temperatureOut: temperatureOut interface equal to operating temperature
(no elements)
Selectable physics equations allow for different governing equations to be used, and consist of equations from (Espinosa-López et al, 2018) by default.
(no remarks)
Results have been validated against (Espinosa-López et al, 2018) published figures.
[1] 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.
[2] efficiency curve of the inverter taken from the data sheet of SMA "Technische Wirkungsgrade und Derating" URL: https://files.sma.de/dl/1348/WirkungDerat-TI-de-46.pdf page 71, 26.11.2019
[3] J. Webster and C. Bode, “Implementation of a Non-Discretized Multiphysics PEM Electrolyzer Model in Modelica,” in Proceedings of the 13th International Modelica Conference, Regensburg, Germany, March 4–6, 2019, no. 157, pp. 833–840, DOI: 10.3384/ecp19157833.
Model created by John Webster (jcwebste@edu.uwaterloo.ca) in October 2018
Model adjusted for TransiEnt by Jan Westphal (j.westphal@tuhh.de) in dec 2019
| Name | Description |
|---|---|
 Outline | |
 Summary | |
 electrolyzerVoltage | Dynamic voltage behaviour of electrolyzer |
 electrolyzerTemperature | Temperature model |
 electrolyzerPressures | Pressure model |
 electrolyzerMassFlow | Mass flow model |