A Thermodynamic Model of Membrane Humidifiers for PEM Fuel Cell Humidification Control | Zendy

Dongmei Chen | Zendy; Huei Peng | Zendy

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A Thermodynamic Model of Membrane Humidifiers for PEM Fuel Cell Humidification Control

Author(s) -

Dongmei Chen,

Huei Peng

Publication year - 2004

Publication title -

journal of dynamic systems measurement and control

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.528

H-Index - 89

eISSN - 1528-9028

pISSN - 0022-0434

DOI - 10.1115/1.1978910

Subject(s) - humidifiers , transient (computer programming) , humidity , proton exchange membrane fuel cell , electrolyte , membrane , relative humidity , volumetric flow rate , nuclear engineering , environmental science , materials science , process engineering , fuel cells , thermodynamics , engineering , chemistry , computer science , chemical engineering , environmental engineering , biochemistry , physics , electrode , operating system

Maintaining proper membrane humidity is crucial to ensure optimal operation of a polymer electrolyte membrane fuel cell system. A membrane humidifier using the fuel cell exhaust gas to humidify the dry air is studied in this paper. We first develop a thermodynamic model, which captures the crucial dynamic variables of the humidifier, including the pressure, flow rate, temperature, and relative humidity of the air flow. Steady-state simulations are then conducted to optimize the humidifier design. Subsequently, dynamic simulations are performed to predict the behavior of the humidifier during transient operations typical for automotive applications. A simple proportional controller was designed to control the humidifier operation. DOI: 10.1115/1.1978910

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