Investigation On Thermal Conductivity Functionalized Multiwalled Carbon Nanotubes Based Nanofluids

Mohd Yunus, Siti Syahirah (2016) Investigation On Thermal Conductivity Functionalized Multiwalled Carbon Nanotubes Based Nanofluids. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Industry nowadays has been focusing on nanofluids to be the next cooling agent on improving the cooling processes due to its special characteristic upon thermal conductivity. This study was proposed due to the cooling agents problems in practical application especially in thermal conductivity. The objective is to prepare stable nanofluids consist of carbon nanotubes based fluids with the addition of surfactant also analyzing and investigating the thermal conductivity of the nanofluids. In this research, functionalized multiwalled carbon nanotubes (fMWCNT) is used as the nanoparticles, deionized water as the base fluids and the addition of Polyvinylpyrrolidone (PVP) as the surfactant to enhance the stability of the nanofluids. The samples are formulated with different weight percentages (0.1 wt% - 1.0 wt%) of fMWCNT and 10% of PVP in order to analyze thermal conductivity performance. All the samples (NF01-NF10) were tested for thermal conductivity at an increment of 1°C temperatures starting from 6°C up to 40°C. The thermal conductivity enhancement of nanofluids is compared to the thermal conductivity of standard deionized water and results showed that the thermal conductivity increased with the addition of nanoparticles into the base fluids. Based on the results, the highest thermal conductivity enhancement was recorded for 31.51% (1.0 wt% of CNT) at 40°C.

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