Results 21 to 30 of about 778,445 (172)

Parametric studies of contrail ice particle formation in jet regime using microphysical parcel modeling [PDF]

Atmospheric Chemistry and Physics, 2010
Condensation trails (contrails) formed from water vapor emissions behind aircraft engines are the most uncertain components of the aviation impacts on climate change.
H.-W. Wong, R. C. Miake-Lye
doaj   +1 more source

Numerical study of effect of post injection coupled with EGR on combustion and emission performances of CRDI engine fueled with biodiesel-ethanol blends

Journal of Traffic and Transportation Engineering (English ed. Online), 2023
Energy shortage and environmental pollution are becoming more serious, biodiesel is regarded as the most promising alternative fuel for diesel engines due to its environmentally friendly and renewable characteristics. In this study, the biodiesel-ethanol
Limin Geng, Hongliang Xiao, Yuxuan Cui, Nan Gao, Qi Li, Hao Chen, Yuantao Xie   +6 more
doaj   +1 more source

Soot and radiation modelling in buoyant fires [PDF]

, 1990
This study seeks to advance present modelling capabilities in respect of soot and thermal radiation emission from fires. Such developments are crucial to the improved estimate of the hazard potential of accidental fires.
Syed, K. J.
core   +7 more sources

A Comparison of compressed air and steam soot blowers in steam boilers [PDF]

EPJ Web of Conferences
Ash and soot fouling of boiler tubes impairs heat transfer, elevating fuel consumption and emissions while reducing overall plant performance. Soot-blowers clean boiler tubes on-line. This study presents a comparative analysis of steam and compressed air
Strobel Gary, Mutemi Anthony
doaj   +1 more source

Efek Kandungan Minyak Jarak pada Bahan Bakar Solar terhadap Konsumsi Bahan Bakar dan Emisi Jelaga Mesin Diesel

Accurate, 2020
Castor oil is an alternative fuel as a substitute for diesel fuel. The property that approaches diesel fuel makes jatropha oil help reduce fossil fuel dependence.
Syarifudin Syarifudin, Firman Lukman Sanjaya   +1 more
doaj   +1 more source

Possibilities of Simultaneous In-Cylinder Reduction of Soot and NOx Emissions for Diesel Engines with Direct Injection

International Journal of Rotating Machinery, 2008
Up to now, diesel engines with direct fuel injection are the propulsion systems with the highest efficiency for mobile applications. Future targets in reducing CO2 -emissions with regard to global warming effects can be met with the help of these engines.
U. Wagner, P. Eckert, U. Spicher
doaj   +1 more source

2D CFD Simulation of Water Injection Strategies in a Large Marine Engine

Journal of Marine Science and Engineering, 2019
A two-dimensional computational fluid dynamics (2D CFD) simulation of a low-speed two-stroke marine engine simulation was performed in order to investigate the performance of 2D meshes that allow the use of more complex chemical schemes and pollutant ...
Tomislav Senčić, Vedran Mrzljak, Paolo Blecich, Igor Bonefačić   +3 more
doaj   +1 more source

Combustion and soot evolution during engine cold starts: effects of injection timing and pressure in wall-impinging sprays

Case Studies in Thermal Engineering
Wall-impinging spray occurrence increases significantly during cold start operations in heavy-duty diesel engines, particularly with varying injection strategies. Therefore, computational simulations were employed to investigate the above problems.
Zhikun Cao, Cong Liu, Zhengyang Cui, Zhi Geng, Han Wu, Guixian Zhang, Chiafon Lee, Junfen Li   +7 more
doaj   +1 more source

Numerical investigation of soot mass concentration in compression ignition diesel engine

Journal of Mechanical Engineering and Sciences, 2016
Soot particles, carbon monoxide, oxides of nitrogen, oxides of sulphur, and hydrocarbon are the emissions produced from diesel engine combustion. Those emissions species are undesirable since they give detrimental impacts to the atmosphere and human ...
F. Ibrahim, W.M.F. Wan Mahmood, S. Abdullah, M.R. Abu Mansor   +3 more
doaj   +1 more source

Char dominates black carbon aerosol emission and its historic reduction in China

Nature Communications, 2023
Emission factors and inventories of black carbon (BC) aerosols are crucial for estimating their adverse atmospheric effect. However, it is imperative to separate BC emissions into char and soot subgroups due to their significantly different ...
Junjie Cai, Hongxing Jiang, Yingjun Chen, Zeyu Liu, Yong Han, Huizhong Shen, Jianzhong Song, Jun Li, Yanlin Zhang, Rong Wang, Jianmin Chen, Gan Zhang   +11 more
doaj   +1 more source