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Abstract: 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 Hot Disk 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 same materials were tested using steady-state methods. However, the results between various methods were within approximately 3% of one another after sources of error were considered, which is not significantly different. The agreement between the results of the thermal conductivity tests for steady-state and transient methods proves that both procedures effectively measure thermal conductivity levels in masonry materials. 

Reference: Journal of Building Physics, 34, 3 (2010) 247-261

DOI: 10.1177/1744259109360060