The characterization and thermo-physical property investigations of SiO2/HFE7000 nanorefrigerants

This paper presents the characterizations and thermo-physical properties investigation of SiO2/HFE7000 nanorefrigerants for 0.005–0.02% volume concentrations and temperature ranges of 283–303 K. SiO2 nanoparticles were dispersed in HFE7000 refrigerants by utilizing the two-step method. The measureme...

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Main Authors:	M. R. M., Nawi, M. Z. A., Rehim, Azmi, W. H., S. A., Razak
Format:	Article
Language:	English
Published:	Elsevier 2018
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/23533/ http://umpir.ump.edu.my/id/eprint/23533/ http://umpir.ump.edu.my/id/eprint/23533/ http://umpir.ump.edu.my/id/eprint/23533/7/The%20characterization%20and%20thermo-physical%20property1.pdf

id	ump-23533
recordtype	eprints
spelling	ump-235332019-01-03T00:21:24Z http://umpir.ump.edu.my/id/eprint/23533/ The characterization and thermo-physical property investigations of SiO2/HFE7000 nanorefrigerants M. R. M., Nawi M. Z. A., Rehim Azmi, W. H. S. A., Razak TJ Mechanical engineering and machinery This paper presents the characterizations and thermo-physical properties investigation of SiO2/HFE7000 nanorefrigerants for 0.005–0.02% volume concentrations and temperature ranges of 283–303 K. SiO2 nanoparticles were dispersed in HFE7000 refrigerants by utilizing the two-step method. The measurements of thermal conductivity and dynamic viscosity were performed by using KD2 Pro Thermal Properties Analyzer and LVDV-III Rheometer, respectively. The SiO2/HFE7000 nanorefrigerants shows high stability with the SiO2 nanoparticles remains suspended when observed for more than 90 days. The thermal conductivity is found increases by concentrations, but decreases by temperature. The highest thermal conductivity enhancement of 27% is observed at 0.02% volume concentration. Meanwhile, the dynamic viscosity of SiO2/HFE7000 nanorefrigerants increases by volume concentrations however decreases by temperatures. The nanorefrigerants behaved as Newtonian fluids. As a conclusion, the present novel SiO2/HFE7000 nanorefrigerants have potential in various heat transfer applications with great stability and thermo-physical properties behaviours. Elsevier 2018 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/23533/7/The%20characterization%20and%20thermo-physical%20property1.pdf M. R. M., Nawi and M. Z. A., Rehim and Azmi, W. H. and S. A., Razak (2018) The characterization and thermo-physical property investigations of SiO2/HFE7000 nanorefrigerants. International Journal of Refrigeration, 88. pp. 275-283. ISSN 0140-7007 https://doi.org/10.1016/j.ijrefrig.2018.02.006 https://doi.org/10.1016/j.ijrefrig.2018.02.006
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery M. R. M., Nawi M. Z. A., Rehim Azmi, W. H. S. A., Razak The characterization and thermo-physical property investigations of SiO2/HFE7000 nanorefrigerants
description	This paper presents the characterizations and thermo-physical properties investigation of SiO2/HFE7000 nanorefrigerants for 0.005–0.02% volume concentrations and temperature ranges of 283–303 K. SiO2 nanoparticles were dispersed in HFE7000 refrigerants by utilizing the two-step method. The measurements of thermal conductivity and dynamic viscosity were performed by using KD2 Pro Thermal Properties Analyzer and LVDV-III Rheometer, respectively. The SiO2/HFE7000 nanorefrigerants shows high stability with the SiO2 nanoparticles remains suspended when observed for more than 90 days. The thermal conductivity is found increases by concentrations, but decreases by temperature. The highest thermal conductivity enhancement of 27% is observed at 0.02% volume concentration. Meanwhile, the dynamic viscosity of SiO2/HFE7000 nanorefrigerants increases by volume concentrations however decreases by temperatures. The nanorefrigerants behaved as Newtonian fluids. As a conclusion, the present novel SiO2/HFE7000 nanorefrigerants have potential in various heat transfer applications with great stability and thermo-physical properties behaviours.
format	Article
author	M. R. M., Nawi M. Z. A., Rehim Azmi, W. H. S. A., Razak
author_facet	M. R. M., Nawi M. Z. A., Rehim Azmi, W. H. S. A., Razak
author_sort	M. R. M., Nawi
title	The characterization and thermo-physical property investigations of SiO2/HFE7000 nanorefrigerants
title_short	The characterization and thermo-physical property investigations of SiO2/HFE7000 nanorefrigerants
title_full	The characterization and thermo-physical property investigations of SiO2/HFE7000 nanorefrigerants
title_fullStr	The characterization and thermo-physical property investigations of SiO2/HFE7000 nanorefrigerants
title_full_unstemmed	The characterization and thermo-physical property investigations of SiO2/HFE7000 nanorefrigerants
title_sort	characterization and thermo-physical property investigations of sio2/hfe7000 nanorefrigerants
publisher	Elsevier
publishDate	2018
url	http://umpir.ump.edu.my/id/eprint/23533/ http://umpir.ump.edu.my/id/eprint/23533/ http://umpir.ump.edu.my/id/eprint/23533/ http://umpir.ump.edu.my/id/eprint/23533/7/The%20characterization%20and%20thermo-physical%20property1.pdf
first_indexed	2023-09-18T22:35:17Z
last_indexed	2023-09-18T22:35:17Z
_version_	1777416553922297856

The characterization and thermo-physical property investigations of SiO2/HFE7000 nanorefrigerants

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