Results 71 to 80 of about 9,395 (252)
Lógica borrosa para la estimación de estados críticos de una pila de combustible PEM
Maskana, 2016 RESUMEN La determinación en tiempo real de los estados críticos de operación de la pila de combustible de membrana intercambio protónico (siglas en ingles, PEM) es uno de los principales retos para los sistemas de control de pilas de combustible PEM ...
Wilton E. Agila, Víctor M. Huilcapi
doaj
Analysis of the Coupling Behavior of PEM Fuel Cells and DC-DC Converters
Energies, 2009 The connection between PEM fuel cells and common DC-DC converters is examined. The analysis is model-based and done for boost, buck and buck-boost converters. In a first step, the effect of the converter ripples upon the PEM fuel cell is shown.
Achim Kienle +2 more
doaj +1 more source
Molecules, 2020 Nafion membranes are still the dominating material used in the polymer electrolyte membrane (PEM) technologies. They are widely used in several applications thanks to their excellent properties: high proton conductivity and high chemical stability in ...
Gabriele G. Gagliardi +3 more
doaj +1 more source
ChemSusChem, Volume 18, Issue 6, March 15, 2025.Sustainable hydrogen production can be obtained from hydogen‐rich biomass‐derived organic molecules through Acceptorless Dehydrogenation (AD) reactions. Glycerol and sugars are available in large quantities from industry and can be successfully used as substrates in AD protocols, in the presence of tailored, selective, easily tunable and thermally ...
Sylwia Kostera, Luca Gonsalvi
wiley +1 more source
Fuel processor - PEM fuel cell systems for energy generation
, 2010 In the last few years, increasing attention has been paid to PEM fuel cells, as promising device for decentralized energy production, both in stationary and automotive field, thanks to high compactness, low weight (high power-to-weight ratio), high ...
Menna, Laura
core
Meshing Strategy for PEM Fuel Cells CFD Modelling– A Systematic Approach [PDF]
, 2016 Typical PEM fuel cell models usually involve more than one million mesh elements making the computation very intense. This necessitates an effective way to mesh the computational domain with a minimum number of mesh points while, at the same time ...
Yang, Z.
core +1 more source
Self-supporting microporous layers (MPLs) for PEM fuel cells
, 2022 S.1391-1399The gas diffusion layer (GDL) plays a crucial role for PEM fuel cell performance. The main requirements of a GDL are the provision of gas and water transport as well as significant electrical and thermal conductivity.
Haußmann, J. +6 more
core +1 more source
Acoustic‐driven surface cleaning with millimeter‐sized bubbles at translational resonance
Droplet, EarlyView.Time‐lapse visualization comparing bubble trajectories. The top panel (0 Hz) shows a bubble's linear path under no acoustic forcing, while the bottom panel (50 Hz) demonstrates the oscillatory motion induced by acoustic waves at a resonance mode. This mechanism holds promising potential for applications such as surface cleaning.
Yan Jun Lin +2 more
wiley +1 more source
MATEC Web of Conferences, 2018 Design of the Proton Exchange Membrane (PEM) fuel cell system is still developed and improved to achieve performance and efficiency optimal. Improvement of PEM fuel cell performance can be achieved by knowing the effect of system parameters based on ...
Mulyazmi +3 more
doaj +1 more source
Steady-State Modeling of Fuel Cells Based on Atom Search Optimizer
Energies, 2019 In simulation studies, the precision of fuel cell models has a vital role in the quality of results. Unfortunately, due to the shortage of manufacturer data given in the datasheets, several unknown parameters should be defined to establish the fuel cell ...
Ahmed M. Agwa +2 more
doaj +1 more source