نتایج جستجو برای: pem fuel cell pemfc
تعداد نتایج: 1740747 فیلتر نتایج به سال:
To simulate a new economical architecture for PEM fuel cell and investigate the effectiveness of the introduced structure on the performance, computational fluid dynamics (CFD) code is used to solve the equations for a single domain of the cell namely: the flow field, the mass conservation, the energy conservation, the species transport, and the electric/ionic fields under the assumptions of st...
This paper presents the modeling and simulation of a hybrid proton exchange membrane fuel cell (PEMFC) with an energy storage system for use in a stand-alone distributed generation (DG) system. The simulation model consists of fuel cell DG, lead-acid battery, maximum power point tracking and power conditioning unit which is modeled in the MATLAB/Simulink platform. Poor loadfollowing characteris...
In this article a CCHP system has been proposed for recovering waste heat of PEM fuel cell and this system can be used for residential applications. Main components of the system are PEM fuel cell, absorption chiller, fuel processor and heat storage tank. Electrochemical equations of PEM have been modeled by MATLAB and the chiller, fuel processor and boiler have been modeled by EES. In addition...
There are several obstacles to the commercialization of PEM fuel cells. One of the reasons is that the presence of carbon monoxide (CO) in the reformatted fuel, even at a very small scale, decreases the fuel cell performance. The aim of this paper is to investigate the effect of CO in reformatted fuel on PEM fuel cell performance. For this purpose, a steady state, one-dimensional and non-isoth...
Hydrogen energy is recognized as the clean with most development potential, and hydrogen fuel cell technology considered ultimate solution utilizing energy. The proton exchange membrane (PEMFC) has merits of high efficiency, density, low operating temperature, clean, affords environmental protection. Improving structure each functional layer could play a significant role in improving PEMFC perf...
In this investigation, micro voltage, temperature and humidity sensors were fabricated and integrated for the first time on a stainless steel foil using micro-electro-mechanical systems (MEMS). These flexible multi-functional micro sensors have the advantages of high temperature resistance, flexibility, smallness, high sensitivity and precision of location. They were embedded in a proton exchan...
Proton exchange membrane fuel cells (PEMFC) are a promising clean power source that can be used in variety of applications such as automobiles, stationary plants, and portable devices. The application problem PEM is multiscale process involving porous media, consisting series mass, momentum, energy transfers through gas channels, current electrode assemblies, electrochemical reactions at three-...
This work focuses on the production of electricity using chloralkaline high temperature PEM fuel cells (HT-PEMFC) comparing, within range 120–180 °C, performance a cell equipped with cathode containing novel Ru/Pt catalyst manufactured at mild conditions another which contains conventional Ru based (Ru0.75Pt0.25O2). Performance electrode 120 °C is much better, but this situation reverses higher...
The problem of parameter estimation the proton exchange membrane fuel cell (PEMFC) model plays a significant role in simulation and optimization PEMFC system. In current research, moth flame algorithm (MFOA) is used to identify best parameters PEMFC. Two different PEMFCs, Nedstack PS6, 6 kW, SR-12 PEM 500 W are demonstrate accuracy MFOA. Throughout process, seven unidentified (℥1</s...
in this paper, a non-isothermal two-phase flow in the cathode gas diffusion layer (gdl) of pem fuel cell is modeled. the governing equations including energy, mass and momentum conservation equations are solved by numerical methods. also, the optimal values of the effective parameters such as the electrodes porosity, gas diffusion layer (gdl) thickness and inlet relative humidity are calculated...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید