Results 21 to 30 of about 4,245 (208)

CURRENT PROFILE OF PEFC CHAIN OF CUSTODY CERTIFIED COMPANIES IN ROMANIA [PDF]

Scientific Papers Series : Management, Economic Engineering in Agriculture and Rural Development, 2019
PEFC is one of the most common certification schemes in forestry worldwide. The aim of this paper was to highlight the profile of the PEFC Chain of Custody certified companies from Romania.
Cristian Mihai ENESCU, Andrei APĂFĂIAN, Aureliu Florin HĂLĂLIȘAN, Dan Răzvan Eugen PUICEA   +3 more
doaj  

Current-Distribution Measurement in Polymer Electrolyte Water Electrolysis Equipment and Polymer Electrolyte Fuel Cell Using NMR Sensor

Journal of Thermal Science and Technology, 2009
In a polymer electrolyte fuel cell (PEFC), the current density through the polymer electrolyte membrane (PEM) is distributed along the electrode on the membrane electrode assembly (MEA).
Yasuo YOKOUCHI, Kuniyasu OGAWA, Tomoyuki HAISHI, Kohei ITO   +3 more
doaj   +1 more source

Numerical Simulation on Effect of Separator Thickness on Coupling Phenomena in Single Cell of PEFC under Higher Temperature Operation Condition at 363 K and 373 K

Energies, 2023
In hydrogen energy systems, the polymer electrolyte fuel cell (PEFC) is an important component. The purpose of this study is to clarify the effect of separator thickness (s.t.) in PEFC on the distributions of mass such as H2, O2, H2O and current density ...
Akira Nishimura, Daiki Mishima, Kyohei Toyoda, Syogo Ito, Mohan Lal Kolhe   +4 more
doaj   +1 more source

Local Consequences of Applying International Norms: Differences in the Application of Forest Certification in Northern Sweden, Northern Finland, and Northwest Russia [PDF]

, 2009
Forest certification, developed in the early 1990s, is a process in which independent assessors grant use of the certification label to producers who meet certain environmental and social criteria set for their forest products.
Camilla Sandström, Sandstrom, C., E. Carina H. Keskitalo, Tysiachniouk, M.S., Keskitalo, E.C.H., Johanna Johansson, Maria Tysiachniouk, Johansson, J.   +7 more
core   +1 more source

Modeling and Analysis of Transport Processes and Efficiency of Combined SOFC and PEMFC Systems

Energies, 2014
A hybrid fuel cell system (~10 kWe) for an average family house including heating is proposed. The investigated system comprises a Solid Oxide Fuel Cell (SOFC) on top of a Polymer Electrolyte Fuel Cell (PEFC).
Abid Rabbani, Masoud Rokni
doaj   +1 more source

Analytical investigation on impact of presence of MPL on temperature distribution in single cell of PEFC under high temperature condition

Nihon Kikai Gakkai ronbunshu, 2020
Polymer Electrolyte Fuel Cell (PEFC) is desired to be operated over 90℃ during the period from 2020 to 2025 in Japan. The aim of this study is to clarify the impact of microporous layer (MPL) on the temperature profile of interface between polymer ...
Akira NISHIMURA, Kohei YAMAMOTO, Tatsuya OKADO, Masafumi HIROTA   +3 more
doaj   +1 more source

On the Concentration Overpotential of PEFC with Micromachined Ti Current Collector

Journal of Thermal Science and Technology, 2010
Micromachined titanium thin film current collector, Ti-CC, that is developed in our previous work is used to investigate the concentration overpotential due to the liquid water filling in the through-holes of Ti-CC.
Kazuyoshi FUSHINOBU, Hironori SHIOZAKI, Ken OKAZAKI   +2 more
doaj   +1 more source

Experimental investigation on performance and water transfer in passive type PEFC

Nihon Kikai Gakkai ronbunshu, 2017
A fuel cell with a simple structure and operating at nearly ambient temperature and pressure is suitable for low cost small-sized generator sets ranging from several to tens Watts for home, outdoor and emergency use.
Eiji EJIRI, Daiki ISONO
doaj   +1 more source

Digitization and traceability: main results of the Living Lab on the wood-energy supply chain in Italy

Forest@, 2021
Italy is the first importer of wood-energy biomass worldwide, with tons of timber illegally imported every year and significant negative socio-economic and environmental consequences.
Ciliberti S, Brunori A, Mariano E, Frascarelli A   +3 more
doaj   +1 more source

Drastic Enhancement of Activity and Durability for Oxygen Reduction Reaction by Melamine Modification for Platinum Nanocluster-Loaded Electrocatalysts. [PDF]

Small Sci
We developed 1 nm platinum (Pt) nanoclusters whose mass activity and durability were enhanced 6.37 and 2.5 times, respectively, via melamine modification. After durability tests, activity remained 11.0 times higher than commercial catalysts. This strong Pt–melamine interaction stabilizes small clusters, offering a pathway to significantly reduce Pt ...
Kurosaki R, Kawawaki T, Ikeda K, Oiwa K, Sato K, Tachibana H, Inaba M, Iida K, Negishi Y.   +8 more
europepmc   +2 more sources