منابع مشابه
Superconducting coil fed by PEM fuel cell
Fuel cells are electrochemical energy converters which allow transformation of the chemical energy of a fuel to electricity through oxido-reduction reaction. The voltage of an elementary cell is usually near 1 V in open circuit and around 0.6 V in nominal conditions of power generation. Fuel cells are then by essence low voltage sources , so that for most practical applications, power managemen...
متن کاملPEM fuel cell electrodes
The design of electrodes for polymer electrolyte membrane fuel cells (PEMFC) is a delicate balancing of transport media. Conductance of gas, electrons, and protons must be optimized to provide efficient transport to and from the electrochemical reactions. This is accomplished through careful consideration of the volume of conducting media required by each phase and the distribution of the respe...
متن کاملEnhancement of PEM fuel cell performance by flow channel indentation
A three-dimensional, steady, single-phase flow of oxygen, nitrogen and water vapor mixture in the cathode of proton exchange membrane (PEM) fuel cell was numerically studied here. It was shown that the performance of the cell was enhanced by partial blockage of the flow channels in a parallel flow field. Since, channel indentation could increase oxygen content within the catalyst layer. It was ...
متن کاملDynamics of Autohumidifed PEM Fuel Cell Operation
Start-up and dynamic responses to changes in load are reported for a dry feed, autohumidified polymer electrolyte membrane fuel cell PEMFC . The fuel cell current can be ignited by water injection; criteria are derived for the required water injection as functions of fuel cell size, temperature, and reactant feed rates. Steady-state multiplicity is observed where the fuel cell current can be ei...
متن کاملModular PEM Fuel Cell SCADA & Simulator System
The paper presents a Supervision, Control, Data Acquisition and Simulation (SCADA & Simulator) system that allows for real-time training in the actual operation of a modular PEM fuel cell system. This SCADA & Simulator system consists of a free software tool that operates in real time and simulates real situations like failures and breakdowns in the system. This developed SCADA & Simulator syst...
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ژورنال
عنوان ژورنال: International Journal of Hydrogen Energy
سال: 2013
ISSN: 0360-3199
DOI: 10.1016/j.ijhydene.2013.03.151