The authors propose a fast and novel method for the synthesis of polyaniline nanofibers and their incorporation into DI-water as a nanofluid. The thermal conductivities of the nanofluids are measured from 10 °C to 80 °C by using the transient plane source (TPS) method. The particle loading amount of nanofibers affected the thermal conductivity of the nanofluids. Scanning Electron Microscopy (SEM) was used to characterize the physical properties of the nanofibers....
The main objective of this research project was to create a material with a very low thermal conductivity at high temperatures, for the conservation of energy in high temperature systems. To accomplish this goal, the researchers incorporated carbon nanofibers into the mesoporous network of monolithic aerogels, with up to a 20 wt.% through an accelerated-gelation sol-gel process. The synthesis process also involved the use of supercritical drying of the aerogels to ...
A new composite zeolite/foam aluminum material is synthesized and its suitability for use in an adsorptive refrigeration system is studied. Current automobile air conditioning systems use vapor compression refrigeration systems which have environmentally unfriendly chemicals and use a significant portion of the engine power of the vehicle. The newly proposed composite zeolite/foam aluminum would work by using the engines heat in order to run the air conditioning systems, ...
Nanofluids and nanorefrigerants are relatively new materials used for a variety of purposes. Specifically, nanorefrigerants are investigated in this study and the authors wanted to devise a theoretical model that could be used to predict the thermal conductivity of nanorefrigerants and nanofluids both. By using the TPS technique the researchers were able to obtain experimental data for the thermal conductivities of a series of nanorefrigerants and through the use of ...
The thermal properties of a series of treated and untreated oil palm fiber-reinforced composites were tested at room temperature and atmospheric pressure using the TPS method. Treatment of the composites with varying methods resulted in increases in thermal conductivity, porosity and pore sizes depending on the treatment method used. The dependence of thermal conductivity on temperature was also studied and it was found that the maximum thermal conductivity was at ...
