Results 51 to 60 of about 9,395 (252)

Análise e desenvolvimento de modelo de transporte de massa visando a aplicação em células a combustível tipo PEM [PDF]

open access: yes, 2012
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis, 2012O atual cenário mundial na área de energia demanda o desenvolvimento tecnológico de alternativas ...
Garcia Acevedo, Luis Evelio
core  

Steam and partial oxidation reforming options for hydrogen production from fossil fuels for PEM fuel cells

open access: yesAlexandria Engineering Journal, 2012
Proton exchange membrane fuel cell (PEM) generates electrical power from air and from hydrogen or hydrogen rich gas mixtures. Therefore, there is an increasing interest in converting current hydrocarbon based marine fuels such as natural gas, gasoline ...
Yousri M.A. Welaya   +2 more
doaj   +1 more source

Development of a Design Tool for Performance Estimation and Validation Proton Exchange Membrane Fuel Cell: Verification and Validation for 20 KW Commercial Fuel Cell

open access: yesFuels
This work provides an extended description of the tools developed in the Wolfram Mathematica environment to characterize proton exchange membrane (PEM) fuel cells.
Angelo Leto, Giuseppe Di Lorenzo
doaj   +1 more source

Effect of the Operation and Humidification Temperatures on the Performance of a Pem Fuel Cell Stack on Dead-End Mode.

open access: yesInternational Journal of Electrochemical Science, 2011
Proton exchange membrane (PEM) fuel cells have attracted grate attention in recent years as a promising replacement for traditional engines. The performance of PEM fuel cells is known to be influenced by many parameters such as operation temperature and ...
M. Pérez-Page, V. Pérez-Herranz
doaj   +1 more source

Characterising PEM fuel cell performance using a current distribution measurement in comparison with a CFD model

open access: yes, 2022
S.185-189The characterisation of a proton exchange membrane (PEM) fuel cell with a straight channel flow field design is performed. Spatially resolved current distribution measurements, at different air flow rates, are compared to numerical simulation ...
Hakenjos, A.   +3 more
core   +2 more sources

Estudo teórico e experimental de célula-combustível tipo pem e perspectivas de aplicação em sistemas de geração distribuída [PDF]

open access: yes, 2005
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Mecânica.Células-combustível se apresentam como alternativas promissoras para acionamento primário em sistemas de geração ou ...
Steidel, Paulo Sergio
core  

Control of Voltage in Proton Exchange Membrane Fuel Cell Using Model Reference Control Approach

open access: yesInternational Journal of Electrochemical Science, 2012
The Proton Exchange Membrane Fuel Cell (PEMFC) is one of the most important power supplies. Maintaining a constant voltage in PEM fuel cells has always attracted the attention of many researchers and many articles have been published on this issue.
Hamideh Najafizadegan   +1 more
doaj   +1 more source

Green Hydrogen for Public Transportation: Insights From an ABM and From Palma de Mallorca Case Study

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT The development of green hydrogen (GH2) value chains is crucial for decarbonizing sectors such as transport and industry. Their emergence, however, requires coordination among diverse actors, technologies, and regulations, which traditional analytical approaches struggle to capture.
Roberta De Cristofaro   +2 more
wiley   +1 more source

Effect of CO in the reformatted fuel on the performance of Polymer Electrolyte Membrane (PEM) fuel cell [PDF]

open access: yesHydrogen, Fuel Cell & Energy Storage, 2017
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
Mostafa Tanha, Hassan Hassanzadeh
doaj   +1 more source

Ruthenium‐Titania Interface‐Mediated Water Activation for High Turnover Frequency in Alkaline Hydrogen Evolution

open access: yesCarbon Energy, EarlyView.
Heterostructured interfaces can accelerate hydrogen evolution by improving water dissociation, yet their underlying mechanisms remain unclear. This study combines in situ Raman spectroscopy and density functional theory to reveal how the RuO2/TiO2 interface promotes both water dissociation and hydrogen adsorption, providing new insights into the ...
Dwi Sakti Aldianto Pratama   +3 more
wiley   +1 more source

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