Journal of Fuel Cell Science and Technology: Recent submissions
Now showing items 701-720 of 854
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Thermal Dynamic Modeling and Nonlinear Control of a Proton Exchange Membrane Fuel Cell Stack
(The American Society of Mechanical Engineers (ASME), 2007)The purpose of this paper is to present a nonlinear control method for accurately maintaining coolant temperature within a proton exchange membrane (PEM) fuel cell stack by controlling coolant ... -
Control Design for a Bottoming Solid Oxide Fuel Cell Gas Turbine Hybrid System
(The American Society of Mechanical Engineers (ASME), 2007)A bottoming 275kW planar solid oxide fuel cell (SOFC) gas turbine (GT) hybrid system control approach has been conceptualized and designed. Based on previously published modeling techniques, a ... -
Polimeric Electrolyte Membrane Fuel Cells: Characterization Test Under Variable Temperature and Relative Humidity Conditions
(The American Society of Mechanical Engineers (ASME), 2007)The aim of this work is the performance study of a polimeric electrolyte membrane stack. Extreme conditions of temperature and relative humidity, such as those that may be found in practical ... -
Continous Operation of Polymer Electrolyte Membrane Regenerative Fuel Cell System for Energy Storage
(The American Society of Mechanical Engineers (ASME), 2007)NASA Glenn Research Center (GRC) has recently demonstrated a polymer electrolyte membrane (PEM) based regenerative fuel cell system (RFCS) that operated for five contiguous back-to-back 24h ... -
Performance of a Polymer Electrolyte Membrane Fuel Cell System Fueled With Hydrogen Generated by a Fuel Processor
(The American Society of Mechanical Engineers (ASME), 2007)Fuel cells, which have seen remarkable progress in the last decade, are being developed for transportation, as well as for both stationary and portable power generation. For residential applications, ... -
Development of a Three-Dimensional Molten Carbonate Fuel Cell Model and Application to Hybrid Cycle Simulations
(The American Society of Mechanical Engineers (ASME), 2007)In this paper, a three-dimensional finite volume model of a molten carbonate fuel cell (MCFC) is presented. The model applies a detailed electrochemical and thermal analysis to a planar MCFC ... -
Simplified Model to Predict Incipient Flooding/Dehydration in Proton Exchange Membrane Fuel Cells
(The American Society of Mechanical Engineers (ASME), 2007)Proper water management is critical for near-ambient temperature operation of a fuel cell. A simplified water balance model has been developed to predict when incipient flooding/dehydration may ... -
Investigation of Atomistic Scale Transport Phenomena of the Proton Exchange Membrane Fuel Cell
(The American Society of Mechanical Engineers (ASME), 2007)This paper studies the transport phenomena inside the electrolyte of proton exchange membrane fuel cells (PEMFCs) using atomistic simulation techniques. The investigated material of the electrolyte ... -
Numerical Analysis of Current Distribution at Proton Exchange Membrane Fuel Cell Compared by Segmented Current Collector Cell
(The American Society of Mechanical Engineers (ASME), 2007)In order to grasp properly proton exchange membrane fuel cell (PEMFC) power generation performances, it is necessary to know factors for water management such as diffusivity and electro-osmotic ... -
Bayes Inference in Multicriteria Analysis for Hybrid Electrical Transportation Systems Design
(The American Society of Mechanical Engineers (ASME), 2007)An advanced stage has been reached in the research and development of alternative vehicle propulsion systems, aiming at assuring acceptable levels of both consumption and emissions. Many different ... -
Performance and Combustion Analysis of a Micro Gas Turbine–Solid Oxide Fuel Cell Hybrid System
(The American Society of Mechanical Engineers (ASME), 2007)An integrated methodology aims at estimation of the actual possibility of operating an hybrid system based on a solid oxide fuel cell and a micro gas turbine, by paying special attention to ... -
Modeling and Simulation of an Indirect Diesel Proton Exchange Membrane Fuel Cell (PEMFC) System for a Marine Application
(The American Society of Mechanical Engineers (ASME), 2007)A dynamic simulation of a PEMFC hybrid system has been developed in a MATLAB/SIMULINK environment to study the component interactions between a diesel fuel processor, a PEMFC system, a ... -
Innovative Flow-Field Combination Design on Direct Methanol Fuel Cell Performance
(The American Society of Mechanical Engineers (ASME), 2007)The flow-field design of direct methanol fuel cells (DMFCs) is an important subject about DMFC performance. Flow fields play an important role in the ability to transport fuel and drive out ... -
Theoretical Analysis on the Autothermal Reforming Process of Ethanol as Fuel for a Proton Exchange Membrane Fuel Cell System
(The American Society of Mechanical Engineers (ASME), 2007)The purpose of this work is to investigate, by a thermodynamic analysis, the effects of the process variables on the performance of an autothermal reforming (ATR)-based fuel processor, operating ... -
Power Exchanges of Hybrid Fuel Cell-Ultracapacitor Power Sources Feeding Pulse Loads
(The American Society of Mechanical Engineers (ASME), 2007)The paper focuses on the experimental results of a series of tests performed on a hybrid electrical source. The hybrid generator is made up of a fuel cell primary source equipped with an ... -
Implementation of a Fuel Cell System Model Into Building Energy Simulation Software IDA-ICE
(The American Society of Mechanical Engineers (ASME), 2007)Due to constantly increasing electricity consumption, networks are becoming overloaded and unstable. Decentralization of power generation using small-scale local cogeneration plants becomes an ... -
Fabrication of Support Tubular Proton Exchange Membrane For Fuel Cell
(The American Society of Mechanical Engineers (ASME), 2007)The support tubular proton exchange membranes (STPEMs) were fabricated successfully by impregnating porous silica pipe into a solution of perfluorinated resin. The structures of the inner, outer, ... -
Gas Turbine Assessment for Air Management of Pressurized SOFC/GT Hybrid Systems
(The American Society of Mechanical Engineers (ASME), 2007)This paper analyzes and compares transient and steady-state performance characteristics of different types of single-shaft turbo-machinery for controlling the air through a pressurized solid oxide ... -
Solid Oxide Fuel Cell System Development in VTT
(The American Society of Mechanical Engineers (ASME), 2007)The Finnish solid oxide fuel cell (SOFC) project (FINSOFC) was initiated in 2002 as a five-year project. It forms the core of the publicly funded SOFC research in Finland. The purpose of the ... -
Detailed Simulation of the Ohmic Resistance of Solid Oxide Fuel Cells
(The American Society of Mechanical Engineers (ASME), 2007)A theoretical evaluation of the ohmic resistance of solid oxide fuel cells (SOFCs) is very important because internal ohmic resistances account for a large part of the losses occurring in SOFCs ...