Category: Transient Plane Source
Author(s): R. Wulf, U. Gross, V. Skibina
Keywords: air, Cellular Metals, Effective Thermal Conductivity, hollow sphere structures, open cell structures, panel test technique, porosity, Temperature, Thermal Conductivity, Transient plane source (TPS) technique
Abstract: This study aimed to experimentally measure the thermophysical properties of cellular metals, focusing on effective thermal conductivity. The transient plane source (TPS) technique was used to measure the thermal conductivity of hollow sphere structures from different steel alloys and open cell structures made of iron-chromium-aluminum alloy (FeCrAl) for temperatures of 250°C and 800°C in air, respectively. From the experimental results, it was seen that the effective thermal conductivity values were shown to mostly be influenced by the effects of temperature, porosity, and pore diameter. The thermal conductivity was shown to increase with increasing temperature and decreasing porosity for all investigated materials.
Reference: Procedia Materials Science (2014), 4:329-333