Nanofluids with Enhanced CHF Prepared from Solgel Synthesized Al2O3 Nanoparticles Utilizing Urea as Chelating Agent

DOI

10.2991/icst-18.2018.163How to use a DOI?

Keywords

Nanoparticles, Al2O3, solgel, urea, nanofluids, CHF.

Abstract

In order to develop a new coolant for nuclear and non-nuclear applications, nanoparticles of Al2O3 for nanofluids have been successfully synthesized by solgel method utilizing AlCl3 as precursor and urea as chelating agent. The mole ratio of the AlCl3 and urea was 1:2. The solution was stirred to form a sol and then was heated at 150oC until forming a gel. The gel was then calcined at 500oC for 1 hour to get Al2O3 nanoparticles. Nanofluids of Al2O3 were prepared by dispersing the Al2O3 nanoparticles into water as base fluid. The synthesized Al2O3 nanoparticles crystallized in gamma phase with crystallite size of 3.4 nm as confirmed by the XRD analyses. Specific surface area of the nanoparticles was 251 m2/g with dBET of 6 nm. As confirmed by TEM analyses, the particle size of the nanoparticles was 35 nm. The nanofluid with concentration of 0.05 vol % and pH of 7.42 possessed zeta potential of 53 mV, indicating a stable suspension. This nanofluid had a CHF enhancement of 92% compared to water as base fluid.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Dani Gustaman Syarif
AU  - Djoko Hadi Prajitno
AU  - Jupiter Sitorus Pane
PY  - 2018/12
DA  - 2018/12
TI  - Nanofluids with Enhanced CHF Prepared from Solgel Synthesized Al2O3 Nanoparticles Utilizing Urea as Chelating Agent
BT  - Proceedings of the International Conference on Science and Technology (ICST 2018)
PB  - Atlantis Press
SP  - 801
EP  - 804
SN  - 2589-4943
UR  - https://doi.org/10.2991/icst-18.2018.163
DO  - 10.2991/icst-18.2018.163
ID  - Syarif2018/12
ER  -