THERMAL SCIENCE

International Scientific Journal

ENERGY EVOLUTION OF COAL SUBJECTED TO THERMO-GAS-MECHANICAL COUPLING

ABSTRACT
In this paper, the orthogonal experiment method is employed to design mechanical test of coal under different temperature, confining pressure, and gas pressure. The results of the experiment were analyzed using statistical methods, such as elastic modulus, peak stress, Poisson’s ratio. The linear model is used to describe the mechanical parameters of coal under the influence of temperature, confining pressure, and gas. The energy formula of coal sample under constant confining pressure is deduced. The evolution of input energy, elastic energy, and dissipation energy in coal deformation process are analyzed.
KEYWORDS
PAPER SUBMITTED: 2018-06-05
PAPER REVISED: 2018-08-15
PAPER ACCEPTED: 2018-12-15
PUBLISHED ONLINE: 2019-03-31
DOI REFERENCE: https://doi.org/10.2298/TSCI180605082G
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2019, VOLUME 23, ISSUE Supplement 3, PAGES [S685 - S692]
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© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence