Thermally conductive nanoparticles are often added to conventional fluids to improve thermal properties. In this paper, the effect of small concentrations of multiwalled carbon nanotubes (MWCNTs) on thermal conductivity over a range of temperatures was tested. A Thermal Constant Analyser measured the thermal conductivity of the nanofluids with the transient plane source (TPS) method from 10 to 80 °C. Results showed that thermal conductivity of the nanofluids increased with temperature, and with ...
Author(s): Devraj Singh, Giridhar Mishra, Meher Wan, Raja Ram Yadav
Weeds are invasive species that have yet to be controlled and cost nations millions of dollars per year in crop losses. In this experiment, two of the worst weeds in the world, Lantana camara and Parthenium Hysterophorus, were studied to determine their capability of producing heat transfer fluids (“biofluids”) that can be sold to reduce the economic burden they cause. The Thermal Constants Analyzer measured the thermal conductivity of the ...
Author(s): Jane Catherine Ngila, Meher Wan, Meher Wana, Neeraj Kumar, R. R. Yadav, R.R. Yadava, Rajiv Prakash, Rashmi Parashar, Vyom Parashar
Nanofluid research is focused on two specific areas of testing: synthesizing new nanofluids with enhanced thermal properties, and finding new applications for nanofluids. Nanofluids are conventional heat transfer fluids with suspensions of thermally conductive nanoparticles. In this study, TiO2 (titanium dioxide) nanoparticles are used to enhance the base fluid propylene glycol (PG). The Thermal Constants Analyzer measured the thermal conductivity of the TiO2/PG nanofluid using the transient plane source (...
Author(s): Aashit Kumar Jaiswal, Ashish Mathur, Devraj Singh, Meher Wan, Punit Kumar Dhawan, Raja Ram Yadav, Vyoma Bhalla
With the increasing popularity of nanofluids (NFs), understanding their thermal properties is critical. In this paper, a thermal constant analyzer measured the thermal conductivity of copper/palladium bimetallic nanostructure-based nanofluids using the transient plane source (TPS) method. Results showed that the addition of the nanoparticles enhanced the thermal conductivity of the nanofluids by approximately 19%....
Author(s): Aashit Kumar Jaiswal, D.K. Singh, Devraj Singh, Giridhar Mishra, Meher Wan, R. R. Yadav, Satyendra Singh
Nanocomposites of polyaniline nanofibers reinforced in epoxy were prepared and their ultrasonic velocities, ultrasonic attenuations, and thermal conductivities were measured over a temperature range of 298-373 K. It was found that the ultrasonic velocity decreased with increasing temperature, but increased with increasing concentration of polyaniline nanofibers in the epoxy matrix. These two trends were opposite for the ultrasonic attenuation, and the thermal conductivity was found to increase with increasing temperature ...
Author(s): Devraj Singh, M. Sridhar Panday, Meher Wan, R. R. Yadav, V. Rajendran
