نتایج جستجو برای: proton exchange membrane fuel cell pemfc
تعداد نتایج: 2184049 فیلتر نتایج به سال:
The development of a generalized steady-state electrochemical model of a polymer electrolyte fuel cell or proton exchange membrane fuel cell (PEMFC) system is presented by R.F Mann et al. to predict the output voltage of a single Ballard Mark V cell as a function of the major variables like current density, pressure of the reactant gases and working temperature more efficiently (Mann et al. 200...
All rights reserved. However, in accordance with the Copyright Act of Canada, this work may be reproduced, without authorization, under the conditions for Fair Dealing. Therefore, limited reproduction of this work for the purposes of private study, research, criticism, review and news reporting is likely to be in accordance with the law, particularly if cited appropriately. ABSTRACT Temperature...
This paper is on the subject of sensor development and sensor-set size optimization approaches for Proton Exchange Membrane Fuel Cell (PEMFC) system in Electric Vehicles (FCEV) applications. Sensors are classified as physical sensors gas sensors. Physical used to detect signals (pressure, mass flow, etc.) which related PEMFC operating state control. Gas consist hydrogen leakage detector safety ...
The amount of current density produced by the stack is the key performance parameter for a fuel cell, given a well-defined quantity of reactants flowing through it. A Proton Exchange Membrane fuel cell (PEMFC) distributed parameters model is considered with all the aspects influencing the cell behavior. A sensitivity analysis is performed through a Monte Carlo Simulation to assess the impact on...
the present paper explores the impact of an on-board hydrogen harvesting system (fuel reformer) on the overall efficiency of a fuel-cell powered vehicle. various methods of hydrogen production for automotive applications have been discussed first. as the hydrogen production is one of the major challenges for application of proton exchange membrane (pem) fuel cells, especially in vehicular indus...
a three dimensional, compressible, steady, one phase flow of reactant-product mixture in the air side electrode of proton exchange membrane fuel cell (pemfc) is numerically studied in this paper. the mixture is composed of three species: oxygen, nitrogen and water vapor. the performance of the cell is enhanced by partial blockage of the flow field channels. various types of these blocks also ca...
This article introduces a dynamic semiempirical model that predicts the degradation of proton exchange membrane fuel cell (PEMFC) by introducing time-based terms in model. The concentration voltage drop is calculated using new statistical equation based on load current and working time, whereas ohmic activation drops are updated equations borrowed from existing literature. Furthermore, develope...
The influence of a tubular structure PEMFC (proton exchange membrane fuel cell) with different flow patterns is investigated in this study. A complete 3D non-isothermal model constructed for square and circular PEMFCs, the distribution oxygen water concentration cathode channels, current density, power density cell net are studied. To end, four arrangements chordal (SC), peripheral (SP), (CC) (...
This project aims to design a predictive maximum power point tracking (MPPT) for proton exchange membrane fuel cell system (PEMFC). MPPT includes the control algorithm of DC-DC boost converter in fully functional mathematical modeling PEMFC system. The is controlled by and regulates voltage extract output power. All simulations were performed using MATLAB software show characteristics extracted...
In recent years, with wide application of proton exchange membrane fuel cell (PEMFC) in vehicles and portable applications, researches regarding PEMFC lifetime behavior associated prognostic techniques receive more interest. this article, a least absolute shrinkage selection operator-echo state network (LASSO-ESN)-based strategy is proposed for the optimization input parameters long-term predic...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید