Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Ümit Özgür Köylü"'
Publikováno v:
International Journal of Hydrogen Energy. 45:19965-19975
This numerical study covers the engine performance and emissions of a dual-fuel compression-ignition engine fueled by hydrogen/diesel mixtures. Advanced simulations of the combustion process were performed by focusing on simulating the engine perform
Autor:
Abdulhakim I. Jabbr, Ümit Özgür Köylü
Publikováno v:
International Journal of Hydrogen Energy. 44:13964-13973
Hydrocarbon exhaust emissions are mainly recognized as a consequent of carbon-based fuel combustion in compression ignition (CI) engines. Alternative fuels can be coupled with hydrocarbon fuels to control the pollutant emissions and improve the engin
Publikováno v:
International Journal of Hydrogen Energy. 41:18291-18299
This work deals with the engine performance and emissions of a single cylinder spark-ignition (SI) engine fueled by hydrogen. Advanced simulations of the combustion process were performed using a commercial software package. The extended Zeldovich me
Publikováno v:
IEEE Transactions on Vehicular Technology. 65:4633-4644
The high energy consumption associated with acceleration requires electric vehicles (EVs) to accelerate to a chosen speed optimally, particularly in urban driving cycles. Existing methods deal with the minimization of acceleration energy without cons
Publikováno v:
Journal of Power Sources. 275:435-446
Due to the limited range and long charging time for electric vehicles, proper utilization of the stored battery energy is crucial. Current methods for electric vehicle range estimation do not help the driver to formulate a driving strategy based on t
Publikováno v:
International Journal of Hydrogen Energy. 39:21185-21195
The branching structures found in biological systems have evolved to an optimum arrangement that distributes nutrients efficiently in the system. Since the flow fields of polymer electrolyte membrane (PEM) fuel cells serve similar functions to the nu
Publikováno v:
Fuel Cells. 14:876-885
A network-based optimization model was developed to optimize the channel dimensions of flow fields in order to achieve a uniform flow distribution and improve the performance of polymer electrolyte membrane (PEM) fuel cells. Different flow field conf
Publikováno v:
International Journal of Hydrogen Energy. 38:6750-6761
The flow field of a bipolar plate distributes reactants for polymer electrolyte membrane (PEM) fuel cells and removes the produced water from the fuel cells. It greatly influences the performance of fuel cells, especially the concentration losses. Pi
Publikováno v:
Journal of Fuel Cell Science and Technology. 12
A bio-inspired proton exchange membrane (PEM) fuel cell with a flow field that mimics a leaf pattern is experimentally and computationally evaluated. Experiments are conducted using a transparent assembly for direct visualization of liquid water with