In this paper, the thermal conductivity of rock samples was tested using three different methods: the transient plane source (TPS) method, the divided bar method, and calorimetric method. Two rock samples were tested under the TPS method with different procedures (i.e. heating and cooling times, sizes of samples). The results of the TPS method were slightly lower than the results of the divided bar method, but yielded an acceptable ...
There are three types of reference materials used to verify numerous standard test methods: certified reference material (CRM), transfer standard (TS), and reference material (RM). A qualified reference material must be isotropic, and have reproducible consistency and stability over a wide range of temperatures. Metals and alloys are commonly used reference materials for solids, but they do not extend to lower temperature ranges unlike Pyroceram 9606, which is a popular alternative. ...
Thermal Constants Analysers are designed to test three-dimensional samples with sizes at least as large as the sensor itself. However, this study examines the possibility of using methods to test the thermal conductivity of thin solid samples when they are thermally insulated. To accomplish this, the 200 data points that are collected by TPS methods should be collected while the sample is heated for only 5 seconds, which is a shorter amount ...
The aim of this study was to determine whether steady-state methods were better at measuring thermal conductivities of oven-fired clay masonry materials than transient methods, and vice versa. The Transient Plane Source (TPS) Method was tested, and when the results were compared with the other transient methods, there was an agreement of better than +/-3%. Overall, the thermal conductivity values recorded for the transient methods were higher than when the ...
In this thesis study, the sensor was used to characterize polymer encapsulated paraffin waxes as phase change materials (PCM). The main purpose of this study was to determine the effect of the polystyrene (PS) and PS: wax microcapsules on the morphology and thermal, mechanical and conductivity properties of the polypropylene matrix. Post-melting, the PP microcapsules were extremely well dispersed within the matrix and there was a strong interaction between them ...
