THERMAL SCIENCE

International Scientific Journal

COUPLING CHARACTERISTICS OF MESO-STRUCTURE AND THERMOPHYSICAL PARAMETERS OF DEEP GRANITE UNDER HIGH GEO-TEMPERATURE

ABSTRACT
Polarizing microscope, nuclear magnetic resonance, and thermal constant analyzer were used to test the granite samples in the depth of 1500-2000 m in San­shandao before and after the heat treatment and be carried out to study the cor­responding relationship between rock meso-structure characteristics and different geothermal temperature circumstances, and the influence of thermal cycling on rock meso-structure. Tests results present that the porosity, pore size distribution, thermal conductivity and specific heat capacity are significantly affected by the environment where the rock occurs, mineral composition and particle size, and the increase in porosity and water content will cause the thermal conductivity and specific heat capacity to decrease.
KEYWORDS
PAPER SUBMITTED: 2021-01-01
PAPER REVISED: 2021-03-10
PAPER ACCEPTED: 2021-04-20
PUBLISHED ONLINE: 2021-12-24
DOI REFERENCE: https://doi.org/10.2298/TSCI2106621W
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 6, PAGES [4621 - 4629]
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© 2022 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