Busemeyer, Lucas and Werner, Claudia and Kallo, Josef (2015) The impact of operating parameters and system architecture on the water management of a multifunctional PEMFC system. International Journal of Hydrogen Energy. Elsevier. doi: 10.1016/j.ijhydene.2015.02.012. ISSN 0360-3199.
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Abstract
The focus of this paper is on multifunctional PEMFC application considering the products electric power and oxygen depleted air (ODA) to be used in aviation. Presented are operation and architecture analyses of a PEMFC system (HyPM XR 12) based on process simulations as well as experimental investigations. The effects of the stack temperature (20–90 °C), the operating pressure (0.2–2.0 bar) and the cathode stoichiometric ratio (1.0–5.0) on the resulting average relative humidity of the cathode exhaust gas and consequently on the efficiency and stability are evaluated for a single and a highly innovative twin system (serial cathode including an interim condensation process). The results achieved are used to identify operation and architecture improvements for an appropriate water management, a key aspect to optimize efficiency and stability of PEMFC systems [1]. Based on the process simulation and experimental investigations can be summarized: In single and twin system operation the stack temperature and the cathode stoichiometric ratio have to be decreased at reduced operating pressure to avoid membrane dehydration. An additional feed gas humidification could be appropriate, especially at low pressure operation. The twin system architecture is relevant to minimize fuel cell flooding at high operating pressure and low stoichiometric ratios required to achieve ODA specifications.
Item URL in elib: | https://elib.dlr.de/96725/ | ||||||||||||||||
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Document Type: | Article | ||||||||||||||||
Title: | The impact of operating parameters and system architecture on the water management of a multifunctional PEMFC system | ||||||||||||||||
Authors: |
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Date: | 28 February 2015 | ||||||||||||||||
Journal or Publication Title: | International Journal of Hydrogen Energy | ||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||
Open Access: | Yes | ||||||||||||||||
Gold Open Access: | No | ||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||
DOI: | 10.1016/j.ijhydene.2015.02.012 | ||||||||||||||||
Publisher: | Elsevier | ||||||||||||||||
ISSN: | 0360-3199 | ||||||||||||||||
Status: | Published | ||||||||||||||||
Keywords: | PEMFC; Water management; Membrane humidification; Oxygen concentration; Efficiency; Aviation | ||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||
HGF - Program: | Aeronautics | ||||||||||||||||
HGF - Program Themes: | fixed-wing aircraft | ||||||||||||||||
DLR - Research area: | Aeronautics | ||||||||||||||||
DLR - Program: | L AR - Aircraft Research | ||||||||||||||||
DLR - Research theme (Project): | L - Systems and Cabin (old) | ||||||||||||||||
Location: | Stuttgart | ||||||||||||||||
Institutes and Institutions: | Institute of Engineering Thermodynamics > Electrochemical Energy Technology | ||||||||||||||||
Deposited By: | Busemeyer, Lucas | ||||||||||||||||
Deposited On: | 29 Jul 2015 09:52 | ||||||||||||||||
Last Modified: | 20 Nov 2023 14:18 |
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