This study was conducted to determine if highly expanded open cell polycarbonate foams (PC) could be used as thermal insulation among other characteristics of the foam. This was accomplished through testing the PC foam with the Transient Plane Source (TPS) method. Multiple relative densities of foam were tested, and it was found that the higher the relative density the higher the thermal conductivity, and vice versa. The lower the relative ...
Thermoelectric (TE) generators have very important applications, such as emerging automotive waste heat recovery and cooling applications. This study investigates how thermal conductivity, seebeck coefficient, and resistivity of bismuth telluride changes with increasing isothermal aging. The thermal conductivity was tested with the Transient Plane Source (TPS) method. Both bismuth telluride n and p type were tested for 2 wk, 8 wk, 6 mo, 1 yr, and 2 yr of isothermal aging at 240 degrees Celsius. The ...
This study is to determine the thermal properties of a paraffin/red brick composite to determine its viability as a form-stable phase change material. Extended graphite was also added to the composite to improve its thermal conductivity. The thermal conductivity for this material was measured using a transient plane source (TPS) method. By adding the paraffin, the thermal conductivity of the composite increase, also by adding extended graphite the thermal ...
Aspects of hydrogen distribution systems need improvement for their applications in fuel cell vehicles. In this paper, chemical and physical characteristics of the H2 storage material, sodium aluminum hydride (SAH), were examined after the samples were compacted and Expanded Natural Graphite (ENG) worms were added. A Thermal Constants Analyzer (TPS) measured the thermal conductivity of the SAH pellets with (ENG) worms using the Transient Plane Source (TPS) method. Results showed ...
Polypropylene (PP) foams are commercially manufactured in four ways, with each method producing different characteristics. The aim of this paper was to examine the properties of each PP-based foam and compare their thermal behaviors and conductivities. A thermal constant analyzer was used to measure the thermal conductivity of the foam samples with the transient plane source (TPS) technique. Results showed that thermal conductivity varied for each production method, but density ...
