Two series of nanofluids were prepared by the researchers, using water as the carrier fluid, and Al2O3 and TiO2 as the nanoparticles; up to 6% particle volume fraction was used. The thermal conductivity and thermal diffusivity of the nanofluids were measured using the transient plane source (TPS) technique, and dynamic viscosity was also measured. The amount of nanoparticle volume fraction affected the value of thermal conductivity, but the nanoparticle cluster ...
An investigation was undertaken to try to gain insight into altered thermal properties of the seafloor near Japan caused by the earthquake and subsequent tsunami that devastated Japan and caused the meltdown of the nuclear reactor in Fukushima in 2011. Core samples of rock were drilled by the JFAST project and these samples were analyzed using the transient plane source (TPS) technique to determine thermal conductivity, thermal diffusivity and volumetric heat ...
The authors state that the TPS technique isn't an accurate method for the measurement of thermal conductivity, thermal diffusivity and volumetric heat capacity of liquids. This is due to the effects of natural convection caused by the sensor which introduce a significant error in the measurements. Six commonly known liquids were investigated using the TPS technique and the obtained values were compared to literature and were found to be significantly ...
Al2O3 nanofluids were prepared with 2, 3, and 4 vol% Al2O3 nanoparticles in water for use as a coolant in plate heat exchangers. Using the transient plane source (TPS) technique, the thermophysical properties of the nanofluids were studied. Correlation equations were obtained for Nusselt number and the friction factor for the nanofluids and water. Less nanofluid is required to produce the same amount of cooling than water....
The authors used a variety of techniques to determine the thermal properties of polymethyl methacrylate (PMMA), including thermal conductivity, thermal diffusivity, specific heat and density. The measurements are performed in the temperature range from -70°C to 80°C. The results from the different techniques used to characterize the PMMA (GHP, GHF, TPS, THS) are all compared to see whether they agree with one another....
