Open AccessStudy of effect of moisture and temperature on thermal and physical properties of limestone using a transient plane source technique
Author(s) -
Farah Anjum,
Faiz Rasool,
F Mohyudin,
Abdul Ameen,
Muhammad Yasin Naz,
Abdul Ghaffar,
Shazia Shukrullah
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/863/1/012014
Subject(s) - thermal diffusivity , thermal conductivity , atmospheric temperature range , mineralogy , heat capacity , analyser , chemical composition , moisture , thermal effusivity , thermal , thermodynamics , materials science , chemistry , composite material , thermal resistance , thermal contact conductance , physics , chromatography
This study investigated the thermophysical properties of limestone in its dry and moist states. A thermal constant analyser, based on Transient Plane Source (TPS) technique, was used to study the thermophysical properties. Temperature dependence of thermophysical properties of limestone was investigated by elevating the temperature up to 433 K. The chemical and mineral composition of samples were studied using SEM-EDS and XRD analysis. The thermal conductivity of dry and moist limestone showed that in situ measurements are necessary for the precise determination of thermal properties. The variations in thermal properties of limestones as a function of temperature were described by mineral composition and heat transfer mechanism. The thermal conductivity of limestone was measured in the range of 2.586 to 3.054 Wm −1 K −1 . The thermal diffusivity of samples was ranged from 1.390 to 1.601 mm 2 s −1 while specific heat capacity of limestone was in the range of 1.847 to 2.066 MJm −3 K −1 . A noticeable change in thermal properties of moist limestone was observed as compared to the dry limestone.