Results 41 to 50 of about 206,650 (158)

Additives to Coal-Based Fuel Pellets for the Intensification of Combustion and Reduction in Anthropogenic Gas Emissions

open access: yesApplied Sciences, 2020
Cylinder-shaped fuel pellets that were 3 mm in diameter and 3 mm in height, with a mass of 20 mg, were produced by compressing dry coal processing waste under the pressure of 5 MPa. The first group of pellets from coal dust with a particle size less than
Dmitriy Klepikov   +3 more
doaj   +1 more source

Methods for Accuracy Increasing of Solid Brittle Materials Fracture Toughness Determining

open access: yesПриборы и методы измерений, 2022
Method for determining of the fracture toughness of brittle materials by indentation is described. The critical stress intensity factor KIC quantifies the fracture toughness. Methods were developed and applied to improve the accuracy of KIC determination
V. A. Lapitskaya   +3 more
doaj   +1 more source

Natural Convection Melting Influence on the Thermal Resistance of a Brick Partially Filled with Phase Change Material

open access: yesFluids, 2021
The constant growth of urban agglomerations with the development of transport networks requires the optimal use of energy and new ways of storing it. Energy efficiency is becoming one of the main challenges of modern engineering.
Nadezhda S. Bondareva   +1 more
doaj   +1 more source

Investigation of the regularities of vortical flows in a cyclone-bed chamber

open access: yesВесці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2018
Experimental investigation of the radial distributions of tangential and longitudinal velocities, total and static pressures in the vortex zone of a cyclone-bed chamber of diameter 0.21 m has been carried out.
E. A. Pitsukha   +2 more
doaj   +1 more source

Mathematical modeling of the electric spark ignition of the coal-water particle fuel under conditions relevant to the internal combustion engines

open access: yesMATEC Web of Conferences, 2017
The results of the mathematical simulation of the coal-water fuel particle in the conditions of electric-spark discharge have been given.
Syrodoy Samen   +3 more
doaj   +1 more source

Relative Environmental, Economic, and Energy Performance Indicators of Fuel Compositions with Biomass

open access: yesApplied Sciences, 2020
The present study deals with the experimental research findings for the characteristics of ignition (ignition delay times, minimum ignition temperature) and combustion (maximum combustion temperature, concentration of anthropogenic emission), as well as ...
Dmitrii Glushkov   +3 more
doaj   +1 more source

Heat transfer in the vortex zone of a cyclone-bed chamber of furnace unit with fluidized bed

open access: yesВесці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2019
An experimental investigation of the heat-transfer coefficient to a spherical probe in a cyclone-bed chamber with fluidized bed in the “cold” and “hot” regimes has been carried out.
E. A. Pitsuha   +3 more
doaj   +1 more source

Numerical Modeling of a Flame Surface in the Closed Chamber

open access: yesМеханика машин, механизмов и материалов, 2008
The method for modeling of the flame surface in a closed cylindrical bomb is developed assuming preserving the spherical flame front at interactions with confined walls.
M.S. Assad, V.N. Mironov, O.G. Penyazkov
doaj  

Ceramic matrix composite based on silicon carbide and nanostructured nitrogen-doped carbon for supercapacitor electrodes

open access: yesВесці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук
The results of studies on the production of a porous ceramic-matrix composite material C–N/SiC from silicon carbide and nitrogen-doped nanostructured carbon for subsequent use as supercapacitor electrodes are presented. The material is formed by pressing
D. V. Solovei   +3 more
doaj   +1 more source

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