Results 31 to 40 of about 865,596 (264)

Impact of endogenous learning curves on maritime transition pathways

open access: yesEnvironmental Research Letters
The maritime industry is a crucial hard-to-abate sector that is expected to depend on high-energy density renewable liquid fuels in the future. Traditionally, decarbonization pathways have been assessed assuming exogenous cost trajectories for renewable ...
Sebastian Franz, Rasmus Bramstoft
doaj   +1 more source

The dependency of fuel consumption on the aerodynamics of a truck

open access: yesТехнічна інженерія, 2023
The results of the analysis of the influence of the aerodynamic characteristics of the road train on its fuel efficiency are presented. Based on the analysis of known studies, the power balance equation and the known equation of road fuel consumption, it
D.B. , I.V. , A.О.
doaj   +1 more source

Thermodynamic analysis of a novel fossil-fuel–free energy storage system with a trans-critical carbon dioxide cycle and heat pump [PDF]

open access: yes, 2020
This paper presents and analyzes a novel fossil-fuel–free trans-critical energy storage system that uses CO2 as the working fluid in a closed loop shuttled between two saline aquifers or caverns at different depths: one a low-pressure reservoir and the ...
Hao, Y   +4 more
core   +1 more source

Control of Synthetic Hairpin Vortices in Laminar Boundary Layer for Skin-Friction Reduction

open access: yesJournal of Marine Science and Engineering, 2020
The results of flow visualization and hot-film measurement in a water channel are presented in this paper, in which the effectiveness of controlling synthetic hairpin vortices in the laminar boundary layer is examined to reduce skin friction.
Bonguk Koo, Yong-Duck Kang
doaj   +1 more source

Moving Cooler: An Analysis of Transportation Strategies for Reducing Greenhouse Gas Emissions [PDF]

open access: yes, 2009
Summarizes estimates of the costs and impact on greenhouse gas emissions of transportation strategies that raise fuel efficiency, lower fuel carbon content, reduce vehicle travel, and improve the transportation network and of combinations of ...

core  

Fuel-Efficient Trajectories Traffic Synchronization [PDF]

open access: yesJournal of Aircraft, 2019
Continuous descent operations (CDOs) with required times of arrival (RTA) have been identified as a potential solution for reducing the environmental footprint of aviation in the terminal maneuvering area without compromising capacity. This paper assesses the feasibility of replacing current air traffic control sequencing and merging techniques, mainly
Pawelek, Adrian   +3 more
openaire   +3 more sources

Air assist fuel nozzle reduces aircraft gas turbine engine emissions at idle operation [PDF]

open access: yes, 1972
Reduction in unburned hydrocarbons from jet engine by use of air assist fuel nozzle is discussed. Operation of nozzle for improving combustion efficiency by improving fuel atomization is analyzed.
Briehl, D., Papathakos, L. C.
core   +1 more source

Study of Minor Actinides Transmutation in PWR MOX fuel

open access: yes, 2017
The management of long-lived radionuclides in spent fuel is a key issue to achieve the closed nuclear fuel cycle and the sustainable development of nuclear energy.
Chen, Shengli   +3 more
core   +1 more source

Agricultural Tractor Test: A Bibliometric Review

open access: yesAgriEngineering
Agricultural tractors are an essential agricultural power source. Therefore, the scientific literature tests have described agricultural tractors’ evolution over time and determined future trends.
Kléber Pereira Lanças   +5 more
doaj   +1 more source

A Control Strategy for Mode Transition with Gear Shifting in a Plug-In Hybrid Electric Vehicle

open access: yesEnergies, 2017
The mode transition from electric propulsion mode to hybrid propulsion mode is important with regard to the power management strategy of plug-in hybrid electric vehicles (PHEVs).
Kyuhyun Sim   +3 more
doaj   +1 more source

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