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A Thermodynamic Model of Membrane Humidifiers for PEM Fuel Cell Humidification Control
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: 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 ...
Nonminimum-Phase Phenomenon of PEM Fuel Cell Membrane Humidifiers
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A membrane-based humidifier that uses cooling water of a fuel cell system to humidify the inlet air is modeled and analyzed in this paper. This four-state lumped model is simple and yet ...
Influence of Base Asphalt and SBS Modifier on the Weathering Aging Behaviors of SBS Modified Asphalt
Publisher: American Society of Civil Engineers
Abstract: This work studied the weathering aging behaviors of styrene-butadiene-styrene copolymer (SBS) modified asphalt. The aging behaviors mainly included physical and rheological properties, chemical structure, and morphology, ...
The Effects of Membrane Properties and Structural Parameters on the Non-Minimum Phase Behavior of the PEM Fuel Cell Humidification System
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The water vapor transfer across a Nafion® membrane exhibits an undesired non-minimum phase behavior. This paper will show that even in the disturbance-to-output loop, the non-minimum phase ...