Results 51 to 60 of about 13,264 (265)

Stability Analysis in a Direct-Current Shipboard Power System with Parallel Permanent Magnet Synchronous Generators and Supercapacitor Integration

open access: yesJournal of Marine Science and Engineering
This paper investigates the small-signal stability of a DC shipboard power system (SPS) with the integration of a supercapacitor. As an efficient energy storage solution, supercapacitors can not only provide rapid energy response to sudden power demand ...
Qinsheng Yun   +4 more
doaj   +1 more source

Real-Time Optimization Energy Management Strategy for Fuel Cell Hybrid Ships Considering Power Sources Degradation

open access: yesIEEE Access, 2020
In order to protect the marine environment, the fuel cell has become a good candidate for the main energy source of marine vehicles due to its remarkable performance of high efficiency, quietness, and cleanness. However, the fuel cell of the hybrid power
Zehui Zhang, Cong Guan, Zhiyong Liu
doaj   +1 more source

Catalytic Hydrothermal Liquefaction of Polyethylene With Pt/C to Tune Product Selectivity

open access: yesCleanMat, EarlyView.
Pt/C‐catalyzed hydrothermal liquefaction of polyethylene in supercritical water enables time‐dependent control of product selectivity, producing paraffin‐rich oils at shorter reaction times and aromatic‐enriched products at longer times without external hydrogen. ABSTRACT Hydrothermal liquefaction (HTL) represents a promising thermochemical pathway for
Taofeng Lu, Wan‐Ting Chen
wiley   +1 more source

Ammonia Concentration Control in Selective Reduction Systems of Nitrogen Oxides of Diesels

open access: yesМеханика машин, механизмов и материалов, 2015
Reduction of toxic components in the exhaust gas of diesel engines to the level of the requirements of Euro 6 is a socially important and technically complex problem.
Alexey A. Demidov   +2 more
doaj  

Dynamic Evaluation Method of Machining Process Planning Based on Digital Twin

open access: yesIEEE Access, 2019
Process evaluation is widely accepted as an effective strategy to improve product quality and shorten its development cycle. However, there has been very little research on how to evaluate the process plan with the dynamic change of the machining ...
Jinfeng Liu   +6 more
doaj   +1 more source

Purification of Li2CO3 Obtained through Pyrometallurgical Treatment of NMC Black Mass from Electric Vehicle Batteries

open access: yesChemSusChem, Volume 18, Issue 6, March 15, 2025.
Lithium carbonate (Li2CO3) obtained from the black mass of recycled lithium batteries is dissolved in water under controlled conditions to remove lithium fluoride (LiF), which is present at a concentration of 3.08 % by weight. The dissolution is carried out at temperatures below 10 °C, and it has been demonstrated that lower temperatures result in ...
Laura Rosso   +3 more
wiley   +1 more source

Carbon emission assessment of tunnel infrastructures: From construction to operation

open access: yesDeep Underground Science and Engineering, EarlyView.
This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long   +4 more
wiley   +1 more source

Performance and exhaust emissions of a diesel engine using diesel nanoemulsions as alternative fuels

open access: yesEgyptian Journal of Petroleum, 2019
The aim of this paper is to investigate the effect of water-in-diesel fuel nanoemulsions on diesel engine performance and exhaust emissions of a single cylinder diesel engine at different engine loads. Emulsified diesel fuel was prepared by mixing diesel
M.R. Noor El-Din   +3 more
doaj   +1 more source

From Ship to Shore: A Review of Vessel‐To‐Grid Bidirectional Charging for Sustainable Maritime Transport

open access: yesEcoEnergy, EarlyView.
As maritime transport electrifies, bidirectional charging (V2G) offers a dual‐purpose solution for energy resilience and economic viability. This work identifies key technological advancements and lifecycle challenges utilizing practical case studies to demonstrate how V2G systems can drive decarbonization and grid stability in the marine sector ...
Jonathan Bloor   +3 more
wiley   +1 more source

An experimental study on using diethyl ether in a diesel engine operated with diesel-biodiesel fuel blend

open access: yesEngineering Science and Technology, an International Journal, 2018
Although biodiesel has a promising potential to be used as an alternative fuel for compression-ignition engines, its use may deteriorate engine performance.
Amr Ibrahim
doaj   +1 more source

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