Results 21 to 30 of about 2,071,140 (280)

Investigating the Effect of Engine Lubricant Viscosity on Engine Friction and Fuel Economy of a Diesel Engine [PDF]

open access: yes
Fuel economy is affected, both by fuel and engine lubricant quality. Engine lubricant quality plays a vital role in reduction of fuel consumption by effective reduction of friction between the contact surfaces of engine parts (piston ring assembly ...
Singh, Devendra
core   +3 more sources

State of the Art of Fuel Cells for Ship Applications [PDF]

open access: yes, 2012
Fuel cells promise to be far more efficient, produce lower or zero emissions, and operate cleaner than conventional internal-combustion engine and gas turbine. They are already used for transportation application (buses, cars and tramways).
HAN, Jingang   +5 more
core   +1 more source

Study of a micro-structured PHE for the thermal management of a fuel cell [PDF]

open access: yes, 2011
This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece.
Paras, SV   +3 more
core   +6 more sources

Fluid Damping in Fuel Assemblies

open access: yesVolume 4: Fluid-Structure Interaction, 2017
Damping is known to be a major parameter in the seismic design of nuclear facilities. Of special interest is the case of fuel assemblies in PWR plants, which, unlike other components, are submitted to axial flows: it has been known since the late 80s that their frequency response to lateral excitations was largely dependent on the flow velocity, and ...
Moussou, Pierre   +3 more
openaire   +2 more sources

Enhancing Thermal Conductivity of SiC Matrix Pellets for Accident-Tolerant Fuel via Atomic Layer Deposition of Al2O3 Coating

open access: yesEnergies
This study investigates the enhancement of thermal conductivity in silicon carbide (SiC) matrix pellets for accident-tolerant fuels via atomic layer deposition (ALD) of alumina (Al2O3) coatings. Pressure-holding ALD protocols ensured precursor saturation,
Yumeng Zhao   +7 more
doaj   +1 more source

Research on Preparation Process by Spark Plasma Sintering and Performance Characterization of UN-U3Si2 Composite Pellet

open access: yesYuanzineng kexue jishu
After the Fukushima nuclear accident in 2011, the international community has put forward higher requirements for the safety and reliability of new generation nuclear power plants and nuclear fuels.
SUN Qiming1, 2, JI Pengbo1, 2, WANG Jijun1, 2, CAO Junwen1, 2, LI Yu1, 2, LI Zongshu1, 2
doaj   +1 more source

Effect of bi-directional excitation input on boiling water reactor scrammability

open access: yesNihon Kikai Gakkai ronbunshu, 2020
When a large earthquake occurs, a boiling water reactor is automatically shutdown through the insertion of control rods among fuel assemblies. A fuel assembly can vibrate in-plane when two seismic waves act on it in directions at right angles to each ...
Yoshihiro GOTO   +3 more
doaj   +1 more source

Optimization of Debinding-sintering Processes and Densification Study on Fabricating Complex-shaped UO2-W Fuel via Powder Extrusion Printing

open access: yesYuanzineng kexue jishu
To meet the demands of future complex space missions, more advanced space propulsion systems are essential. Among these, nuclear thermal propulsion (NTP) systems offer high specific impulse, high thrust, and long operating times, making them an ideal ...
SHAO Zongyi1, 2, ZHAO Yumeng1, 2, XUN Yuxuan1, 2, ZHANG Zhengrong2, CAO Junwen1, 2, LIU Wei2, LIU Wentao2
doaj   +1 more source

Analysis of Computer Modelling Results on Fuel Rods Strength and Condition at Reduced or Absent Cooling Caused by Accident

open access: yesEnergy Engineering and Control Systems, 2021
The paper describes the phenomenology of fuel rod behaviour in severe accident. As an example, an experiment is described resulting in severe damage of 19 fuel rod assembly of VVER type; it was carried out in the CORA facility in 1993 (Research Centre ...
Stepan Lys
doaj   +1 more source

Revealing the Nanoscale Morphology Changes of Polymer Electrolyte Membrane Fuel Cell Catalyst Layers due to Conditioning. [PDF]

open access: yesAdv Sci (Weinh)
We apply ex situ and in situ scanning transmission X‐ray microscopy to reveal the structural degradation of polymer electrolyte membrane fuel cell catalyst layers due to conditioning and thermal heating of the catalyst coated membrane. We observe a redistribution of the ionomer and carbon‐black in the catalyst layer, as well as nanoscale membrane ...
Lytle S   +4 more
europepmc   +2 more sources

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