In this paper, thermal properties of CdS and ZnS nanoparticles are examined to understand heat transfer behavior through polystyrene (PS) composites. The transient plane source (TPS) method was used to measure the thermal conductivities of the CdS/PS and ZnS/PS nanocomposites. Results showed that the nanocomposites followed a similar increasing trend until a common temperature where each sample adopted a constant thermal conductivity. Overall, the ZnS/PS nanocomposites showed ...
This article briefly explains the transient plane source technique. This method is used to simultaneously measure thermal conductivity and thermal diffusivity of solids. A Kapton insulated nickel sensor emits electrical currents into a sample that is sandwiched around the heat source which measures thermal properties....
This study developed a model that used a transient plane source (TPS) sensor to measure the specific heat capacity of anisotropic materials. The underside of a sample holder with a diameter of 20 mm, and a height of 5 mm was attached to a Kapton TPS sensor. During measurements, the sample holder was hung inside a steel tube at atmospheric pressure. Results showed that the model underestimated the heat capacity, which suggests ...
Transient methods are often preferred to steady-state methods when testing the thermophysical properties of materials because of they are simple to use, can quickly produce measurements, and can simultaneously test three thermal properties. There are two factors that influence the accuracy of contact transient testing that must be accounted for when developing a standard: measurement time, and the geometry of the sample and the sensor. To demonstrate this point, when ...
The Transient Plane Source (TPS) Technique measures the thermal conductivity, thermal diffusivity, and specific heat of solids and liquids. An electrically conducting double spiral nickel sensor pulses a current through a sample which increases its temperature, while simultaneously recording the length of time it took for the sample to heat up. This study, researchers tested the thermal properties of various materials and determined that anisotropy must be considered when these ...
