The transition to a low-carbon system foresees the introduction of hydrogen as a clean energy vector. Electrolyzers play a key role in its production from renewable energy, and PEM technology seems the most promising alternative thanks to efficiency, flexibility and compactness. Modeling the device dynamic behavior allows investigating its combination with renewable electricity sources. A dynamic 0D model is developed using Aspen Custom Modeler, including a detailed description of the various phenomena involved in the electrochemical process. General formulations are implemented and multiple options for correlations are present, when available. The model is validated against available literature data, showing an appropriate reconstruction of the cell behavior. Unsteady behavior is studied and the role of thermal capacity is shown, under a test-case with a simple operating input profile.

Zero-dimensional dynamic modeling of PEM electrolyzers

Colbertaldo, Paolo;Gómez Aláez, Sonia Laura;Campanari, Stefano
2017-01-01

Abstract

The transition to a low-carbon system foresees the introduction of hydrogen as a clean energy vector. Electrolyzers play a key role in its production from renewable energy, and PEM technology seems the most promising alternative thanks to efficiency, flexibility and compactness. Modeling the device dynamic behavior allows investigating its combination with renewable electricity sources. A dynamic 0D model is developed using Aspen Custom Modeler, including a detailed description of the various phenomena involved in the electrochemical process. General formulations are implemented and multiple options for correlations are present, when available. The model is validated against available literature data, showing an appropriate reconstruction of the cell behavior. Unsteady behavior is studied and the role of thermal capacity is shown, under a test-case with a simple operating input profile.
dynamic; electrolysis; modeling; PEM
File in questo prodotto:
File Dimensione Formato  
11311-1053009 Colbertaldo.pdf

accesso aperto

: Publisher’s version
Dimensione 739.71 kB
Formato Adobe PDF
739.71 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1053009
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 15
  • ???jsp.display-item.citation.isi??? 11
social impact