Staff View: Experimental investigation of conduction and convection heat transfer properties of a novel nanofluid based on carbon quantum dots

Experimental investigation of conduction and convection heat transfer properties of a novel nanofluid based on carbon quantum dots

So far, many studies have been conducted on heat transfer nanofluids and various nanofluids have been synthesized and evaluated by different nanoparticles. In the present research, the use of biodegradable carbon quantum dots (CQDs) to synthesize heat transfer nanofluids was investigated for the fir...

Full description

Saved in:

Bibliographic Details
Main Authors:	Ettefaghi, E. O. L., Rashidi, A., Ghobadian, B., Najafi, G., Khoshtaghaza, M. H., Sidik, N. A. C., Yadegari, A., Xian, H. W.
Format:	Article
Language:	English
Published:	Elsevier Ltd. 2018
Subjects:	T Technology (General)
Online Access:	http://eprints.utm.my/id/eprint/81807/1/NorAzwadiCheSidek2018_ExperimentalInvestigationofConductionandConvectionHeat.pdf http://eprints.utm.my/id/eprint/81807/ http://dx.doi.org/10.1016/j.icheatmasstransfer.2017.10.002
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my.utm.81807
record_format	eprints
spelling	my.utm.818072019-09-29T08:13:04Z http://eprints.utm.my/id/eprint/81807/ Experimental investigation of conduction and convection heat transfer properties of a novel nanofluid based on carbon quantum dots Ettefaghi, E. O. L. Rashidi, A. Ghobadian, B. Najafi, G. Khoshtaghaza, M. H. Sidik, N. A. C. Yadegari, A. Xian, H. W. T Technology (General) So far, many studies have been conducted on heat transfer nanofluids and various nanofluids have been synthesized and evaluated by different nanoparticles. In the present research, the use of biodegradable carbon quantum dots (CQDs) to synthesize heat transfer nanofluids was investigated for the first time. In fact, CQDs are a new generation of carbon nanoparticles and one of the advantages of which is their very small size that facilitates the prepared of nanofluids at very low concentrations with high stability. In the present research, CQDs were synthesized based on microwave method using commercial ammonium hydrogen-citrate as precursor. The nanofluid samples were synthesized based on car radiator coolant and CQDs at the concentrations of 100, 200, 500, and 1000 ppm. Thermal conductivity (k) and convection heat transfer (h) coefficients were investigated as the main features of the fluid's heat transfer characteristics. The obtained results for 200-ppm concentration indicated the improvement of k and h by 5.7% and 16.2%compared to the base fluid, respectively. Besides, the synthesized nanofluids had also significant stability and very low cost which are of great importance for industrial applications. Finally, the heat transfer process in the 200-ppm nanofluid was simulated by Ansys Fluent software. Elsevier Ltd. 2018-01 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/81807/1/NorAzwadiCheSidek2018_ExperimentalInvestigationofConductionandConvectionHeat.pdf Ettefaghi, E. O. L. and Rashidi, A. and Ghobadian, B. and Najafi, G. and Khoshtaghaza, M. H. and Sidik, N. A. C. and Yadegari, A. and Xian, H. W. (2018) Experimental investigation of conduction and convection heat transfer properties of a novel nanofluid based on carbon quantum dots. International Communications in Heat and Mass Transfer, 90 . pp. 85-92. ISSN 0735-1933 http://dx.doi.org/10.1016/j.icheatmasstransfer.2017.10.002 DOI:10.1016/j.icheatmasstransfer.2017.10.002
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
language	English
topic	T Technology (General)
spellingShingle	T Technology (General) Ettefaghi, E. O. L. Rashidi, A. Ghobadian, B. Najafi, G. Khoshtaghaza, M. H. Sidik, N. A. C. Yadegari, A. Xian, H. W. Experimental investigation of conduction and convection heat transfer properties of a novel nanofluid based on carbon quantum dots
description	So far, many studies have been conducted on heat transfer nanofluids and various nanofluids have been synthesized and evaluated by different nanoparticles. In the present research, the use of biodegradable carbon quantum dots (CQDs) to synthesize heat transfer nanofluids was investigated for the first time. In fact, CQDs are a new generation of carbon nanoparticles and one of the advantages of which is their very small size that facilitates the prepared of nanofluids at very low concentrations with high stability. In the present research, CQDs were synthesized based on microwave method using commercial ammonium hydrogen-citrate as precursor. The nanofluid samples were synthesized based on car radiator coolant and CQDs at the concentrations of 100, 200, 500, and 1000 ppm. Thermal conductivity (k) and convection heat transfer (h) coefficients were investigated as the main features of the fluid's heat transfer characteristics. The obtained results for 200-ppm concentration indicated the improvement of k and h by 5.7% and 16.2%compared to the base fluid, respectively. Besides, the synthesized nanofluids had also significant stability and very low cost which are of great importance for industrial applications. Finally, the heat transfer process in the 200-ppm nanofluid was simulated by Ansys Fluent software.
format	Article
author	Ettefaghi, E. O. L. Rashidi, A. Ghobadian, B. Najafi, G. Khoshtaghaza, M. H. Sidik, N. A. C. Yadegari, A. Xian, H. W.
author_facet	Ettefaghi, E. O. L. Rashidi, A. Ghobadian, B. Najafi, G. Khoshtaghaza, M. H. Sidik, N. A. C. Yadegari, A. Xian, H. W.
author_sort	Ettefaghi, E. O. L.
title	Experimental investigation of conduction and convection heat transfer properties of a novel nanofluid based on carbon quantum dots
title_short	Experimental investigation of conduction and convection heat transfer properties of a novel nanofluid based on carbon quantum dots
title_full	Experimental investigation of conduction and convection heat transfer properties of a novel nanofluid based on carbon quantum dots
title_fullStr	Experimental investigation of conduction and convection heat transfer properties of a novel nanofluid based on carbon quantum dots
title_full_unstemmed	Experimental investigation of conduction and convection heat transfer properties of a novel nanofluid based on carbon quantum dots
title_sort	experimental investigation of conduction and convection heat transfer properties of a novel nanofluid based on carbon quantum dots
publisher	Elsevier Ltd.
publishDate	2018
url	http://eprints.utm.my/id/eprint/81807/1/NorAzwadiCheSidek2018_ExperimentalInvestigationofConductionandConvectionHeat.pdf http://eprints.utm.my/id/eprint/81807/ http://dx.doi.org/10.1016/j.icheatmasstransfer.2017.10.002
_version_	1651866364630007808
score	13.211869

Experimental investigation of conduction and convection heat transfer properties of a novel nanofluid based on carbon quantum dots

Similar Items