Modelon Ab · OMXSTO:MODEL
Modelon Ab — Technical Presentation (2021)
26 slides from Modelon Ab's technical presentation, 2021
Slide 1: Fuel Cell Library Overview
FUEL CELL LIBRARY Overview ©2021 Modelon.
Slide 2: Agenda
AGENDA ❑ About Fuel Cell Library ❑ Key Benefits ❑ Key Capabilities ❑ Key Applications ❑ Library Contents ❑ Modelon Compatibility ❑ Latest Release ©2021 Modelon.
Slide 3: About Fuel Cell Library
ABOUT FUEL CELL LIBRARY • Modeling and simulation of fuel cell systems for • Process design • component sizing and system integration • Requirement verification • Analysis of dynamics • Controller design and tuning (HIL/SIL) • Optimization of operating conditions to improve the system efficiency • S
Slide 4: Key Benefits
KEY BENEFITS • Rapid model development using pre-configurable templates and numerically efficient models & fluids • Ready to apply out of the box, accurate and robust models with a large set of correlations • Real time capable models for use in HIL/SIL applications • Ability to simulate start-up seq
Slide 5: Key Capabilities
KEY CAPABILITIES • System and component design • Support of Solid oxide fuel cells (SOFC) and proton exchange membrane fuel cells (PEMFC) • Reactors for fuel pre-processing and internal stack reforming • Reactions calculated using several approaches • Quasi-equilibrium, Equilibrium with reaction inv
Slide 6: Key Applications
KEY APPLICATIONS ©2021 Modelon.
Slide 7: HIL Testing of a Truck Auxiliary Power Unit (APU)
CASE STUDY HIL Testing of a Truck Auxiliary Power Unit (APU) Objective Verify failsafe and environmentally friendly PLC start-up sequence in an APU to avoid costly component failures during testing. Results • Verified PLC implementation • Cost and time savings by minimizing component failures during
Slide 8: Fuel Cell Vehicle Drive Cycle Simulation
CASE STUDY Fuel Cell Vehicle Drive Cycle Simulation Objective Evaluate the performance of a fuel cell vehicle during a full drive cycle simulation, monitoring the overall performance and efficiency and predicting the behavior of a real vehicle. Results • A flexible model architecture for hybrid hydr
Slide 9: Polymer Electrolyte Membrane Fuel Cell Validation
CASE STUDY Polymer Electrolyte Membrane Fuel Cell Validation Objective Researchers at Tokyo Metropolitan University set out to create a PEMFC test bench model for virtual design optimization. Results • Validated PEMFC model ready to be used for design optimization and control scheme development. In
Slide 10: Library Contents
LIBRARY CONTENTS ©2021 Modelon.
Slide 11: Library Contents: Examples and components
LIBRARY CONTENTS • Examples displaying typical use-cases and capabilities • Fuel cell components • Reaction models • Membranes • Stacks • Auxiliary system components • Heat exchangers • Pumps • Pipes • Media models ©2021 Modelon.
Slide 12: kW Solid Oxide Fuel System example
LIBRARY CONTENTS • 5 kW Solid Oxide Fuel System example • Addresses complex thermal interactions • Fed with natural gas, air and water • Pre-reforming of natural gas • Stack with 60 cells, manifolds and insulation • Catalytic afterburner to ▪ Burn remaining fuel ▪ Pre-heat the fuel and generate stea
Slide 13: Preprocessor and Micro gas turbine examples
LIBRARY CONTENTS • Preprocessor and Micro gas turbine examples ©2021 Modelon.
Slide 14: Diesel Fueled auxiliary power unit (APU) for trucks
LIBRARY CONTENTS • Diesel Fueled auxiliary power unit (APU) for trucks • Fed with hydrogen-rich gas made from reformed diesel • Challenges: ▪ CO content in pre-reformed gas must be < 25 ppm. ▪ Fast dynamics in pre-processing unit due to chemical reactions ▪ Start-up sequence (controls, fast dynamics
Slide 15: Stack and templates
LIBRARY CONTENTS • Stack and templates • Substacks connected thermally in parallel • Templates for full stack configurations • With or without cooling • Support for various manifold configurations An example of water-cooled stack An example of SOFC stack ©2021 Modelon.
Slide 16: Substacks
LIBRARY CONTENTS • Substacks • Anode and cathode channels connected to a membrane model • 1D discretization along flow direction • Flexible fidelity level option • Multiple cells or single for faster simulations • Support for condensation in the flow channels An example of PEMFC substack ©2021 Model
Slide 17: Membranes
LIBRARY CONTENTS • Membranes • Detailed electrochemical models or simplified models for real-time applications • Define the electrical behavior of the fuel cell (including different kinds of losses) and the fuel cell reaction: 2𝐻2 + 𝑂2 → 2𝐻2 𝑂 Membrane Template An example of PEMFC Membrane…
Slide 18: Manifolds
LIBRARY CONTENTS ▪ Manifolds for different flow configurations ▪ Internal manifolds ▪ External manifolds ▪ Can be used to achieve ▪ U-flow ▪ Z-flow ▪ Mid-flow ▪ Equally distributed flows Different types of manifolds ©2021 Modelon.
Slide 19: Reactors
LIBRARY CONTENTS • Reactors • Lumped reactors • Discretized pipe reactors ▪ Internal reforming (SOFC) ▪ Plate HEX reactor coated with catalyst Test model for a auto thermal reformer ©2021 Modelon.
Slide 20: Reactions
LIBRARY CONTENTS • Reactions • Reactions modelled in three approaches: ▪ Equilibrium with reaction invariants ▪ Quasi-equilibrium reactions ▪ Reaction kinetics Equilibrium mass fractions for methane reforming at different temperatures ©2021 Modelon.
Slide 21: Burners
LIBRARY CONTENTS • Burners • Start-up burners • Catalytic afterburners • Purpose ▪ Pre-heating ▪ Burning excess fuel ▪ Steam generation • Combustion efficiency as the main parameter Test model for a burner ©2021 Modelon.
Slide 22: Media properties
LIBRARY CONTENTS • Media properties • Reaction media ▪ Ideal gas using NASA polynomials ▪ Used in reactors ▪ Common reaction properties ▪ Suitable when the temperature, T, and the amount of substance, Z, are used as states • Condensing media ▪ Ideal gas with simplified liquid water model • Two Phase
Slide 23: Modelon Compatibility
MODELON COMPATIBILITY ©2021 Modelon.
Slide 24: Recommended Modelon Library Compatibility
RECOMMENDED MODELON LIBRARY COMPATIBILITY • Modelon’s Fuel Cell Library is compatible with Modelon’s Vehicle Dynamics Library for the creation of fuel cell vehicle models. ©2021 Modelon.
Slide 25: Latest Release
LATEST RELEASE ©2021 Modelon. 25
Slide 26: Release 2021.2 Enhancements
RELEASE: 2021.2 Enhancements • Improvements in CondPEMFCStack and CondPEMFCSubStack in which the components did not scale automatically with number of cells • Energy balance calculation and summary variables of EpsNTUHumidifier improved • The membrane model in PEMFCSubStack has been made replaceable