The transient plane source sensors were used to measure thermal conductivity and other thermophysical properties of infrared transparent materials, while under infrared imaging. The infrared imaging provided evidence of temperature uniformity and symmetry, as well as temperature monitoring of the sensor and material being tested. The upgraded version of the original TPS system was used including a bridge circuit, a digital voltmeter, and a data analysis module...
Author(s): H. Wang, R. B. Dinwiddie
This paper highlights the use of the transient plane source (TPS) technique to test the thermal properties of porous building materials, such as autoclaved aerated concrete and calcium silicate boards reinforced by cellulose fibers. Transient methods relay multiple thermophysical parameters, such as thermal diffusivity, specific heat, and thermal conductivity, all in one measurement – a highly sought after trait. Measurements were performed to compare the transient method to other methods of ...
Author(s): L. Kubicar, V. Bohac, V. Vretenar
In this study, soft sphere surfactants, with varying head group charges and alkyl chain lengths, were investigated for their effects on the thermal conductivity, rheology, density, contact angle and refractive index of nanofluids. It was noted that the thermal conductivity of the ionic surfactant micelles follows the effective medium theory of poor thermal conductance, with interfacial resistance towards infinity. It was also determined that the longer the alkyl chains on ...
Author(s): John Philip, S. A. Angayarkanni
The Transient Plane Source Method is a helpful tool to test for the thermal conductivity of homogenous materials, however researchers at both the Chalmers University of Technology and Gothenberg University have created a process to test the thermal conductivities of inhomogeneous materials. For this experiment, a thermal analyzer was used to determine the thermal conductivities of four different sample materials (polymers and Pyrex glass) – each with different sizes and defects. ...
Author(s): A. Hinton, Arne RosC)n, B. Berg, B. M. Mihiretie, Daniel Cederkrantz, Henrik Otterberg, Magnus Karlsteen, Maria Sundin
In this study, the thermal conductivity of alkanes was altered, by using inverse micellar templating and nanofibers. The main goal of this study was to create alkanes with tunable thermal conductivities, for their use as phase change materials in heat management. The thermal conductivity of an n-hexadecane product with inverse micelles of different volume fractions was analyzed. The tunable thermal conductivity of the micelle templated alkaline was determined to be ...
Author(s): John Philip, S. A. Angayarkanni
