Model-based analysis of micro-separators for portable direct methanol fuel-cell 
systems

Zenith, F.; Kraus, M.; Krewer, U.

doi:10.1016/j.compchemeng.2011.11.005

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Model-based analysis of micro-separators for portable direct methanol fuel-cell systems

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Kraus, M.
Portable Energy Systems, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society;

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Krewer, U.
Otto-von-Guericke-Universität Magdeburg, External Organizations;
Portable Energy Systems, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society;

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Citation

Zenith, F., Kraus, M., & Krewer, U. (2012). Model-based analysis of micro-separators for portable direct methanol fuel-cell systems. Computers & Chemical Engineering, 38, 64-73. doi:10.1016/j.compchemeng.2011.11.005.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-89A5-D

Abstract

The applicability of capillary separation to direct methanol fuel-cell systems is studied in this article from two complementary perspectives: a three-dimensional simulation with computational fluid dynamics of a gas-liquid separator, whose function is based on capillary forces rather than gravity, and a zero-dimensional model, which is integrated in the process model of a direct methanol fuel-cell system. The three-dimensional analysis indicates that an appropriate choice of construction and operation parameters allows to achieve almost perfect liquidgas separation, and that operation is not signicantly in uenced by orientation. The system-wide analysis indicates that the inclusion of such a capillary separator stabilises the system, allowing the use of simpler control strategies and removing the necessity of sensors dicult to implement. Copyright © 2012 Elsevier B.V. All rights reserved. [accessed January 2nd 2012]