Experimental investigation of thermal conductivity and dynamic viscosity on nanoparticle mixture ratios of TiO2-SiO2 nanofluids

In recent years, research is focused on enhancing the thermo-physical properties of single component nanofluids. Hence, the hybrid or composite nanofluids are developed to enhance the heat transfer performance. The thermo-physical properties of TiO2-SiO2 nanoparticles suspended in a base fluid of wa...

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Main Authors:	Khamisah, Abdul Hamid, Azmi, W. H., M. F., Nabil, R., Mamat, Sharma, K. V.
Format:	Article
Language:	English
Published:	Elsevier Ltd 2018
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/20416/ http://umpir.ump.edu.my/id/eprint/20416/ http://umpir.ump.edu.my/id/eprint/20416/ http://umpir.ump.edu.my/id/eprint/20416/1/Experimental%20investigation%20of%20thermal%20conductivity.pdf

id	ump-20416
recordtype	eprints
spelling	ump-204162019-10-17T08:06:23Z http://umpir.ump.edu.my/id/eprint/20416/ Experimental investigation of thermal conductivity and dynamic viscosity on nanoparticle mixture ratios of TiO2-SiO2 nanofluids Khamisah, Abdul Hamid Azmi, W. H. M. F., Nabil R., Mamat Sharma, K. V. TJ Mechanical engineering and machinery In recent years, research is focused on enhancing the thermo-physical properties of single component nanofluids. Hence, the hybrid or composite nanofluids are developed to enhance the heat transfer performance. The thermo-physical properties of TiO2-SiO2 nanoparticles suspended in a base fluid of water (W) and ethylene glycol (EG) mixture with 60:40 vol ratio are investigated. The experiments were conducted for 1.0% volume concentration of TiO2-SiO2 nanofluids with different mixture ratios of 20:80, 40:60, 50:50, 60:40 and 80:20. The measurements of thermal conductivity and dynamic viscosity were performed in the temperature range of 30–80 °C by using KD2 Pro Thermal Properties Analyzer and Brookfield LVDV III Ultra Rheometer respectively. The highest thermal conductivity for TiO2-SiO2 nanofluid was obtained with a ratio of 20:80 and the maximum enhancement exceeded up to 16% higher than the base fluids. The nanofluids with a ratio of 50:50 provided the lowest effective thermal conductivity. Meanwhile, the dynamic viscosity variation for all mixture ratios is always lower than the ones with a ratio of 50:50. The properties enhancement ratio suggests that TiO2-SiO2 nanofluid with 1.0% volume concentration will aid the heat transfer for all mixture ratios except for the ratio of 50:50. As a conclusion, the optimum mixture ratios for TiO2-SiO2 nanofluids are attained with 40:60 and 80:20 ratios where the combination of enhancement in thermal conductivity and dynamic viscosity had more advantages to heat transfer as compared to other ratios. Elsevier Ltd 2018 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/20416/1/Experimental%20investigation%20of%20thermal%20conductivity.pdf Khamisah, Abdul Hamid and Azmi, W. H. and M. F., Nabil and R., Mamat and Sharma, K. V. (2018) Experimental investigation of thermal conductivity and dynamic viscosity on nanoparticle mixture ratios of TiO2-SiO2 nanofluids. International Journal of Heat and Mass Transfer, 116. pp. 1143-1152. ISSN 0017-9310 https://doi.org/10.1016/j.ijheatmasstransfer.2017.09.087 10.1016/j.ijheatmasstransfer.2017.09.087
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 Khamisah, Abdul Hamid Azmi, W. H. M. F., Nabil R., Mamat Sharma, K. V. Experimental investigation of thermal conductivity and dynamic viscosity on nanoparticle mixture ratios of TiO2-SiO2 nanofluids
description	In recent years, research is focused on enhancing the thermo-physical properties of single component nanofluids. Hence, the hybrid or composite nanofluids are developed to enhance the heat transfer performance. The thermo-physical properties of TiO2-SiO2 nanoparticles suspended in a base fluid of water (W) and ethylene glycol (EG) mixture with 60:40 vol ratio are investigated. The experiments were conducted for 1.0% volume concentration of TiO2-SiO2 nanofluids with different mixture ratios of 20:80, 40:60, 50:50, 60:40 and 80:20. The measurements of thermal conductivity and dynamic viscosity were performed in the temperature range of 30–80 °C by using KD2 Pro Thermal Properties Analyzer and Brookfield LVDV III Ultra Rheometer respectively. The highest thermal conductivity for TiO2-SiO2 nanofluid was obtained with a ratio of 20:80 and the maximum enhancement exceeded up to 16% higher than the base fluids. The nanofluids with a ratio of 50:50 provided the lowest effective thermal conductivity. Meanwhile, the dynamic viscosity variation for all mixture ratios is always lower than the ones with a ratio of 50:50. The properties enhancement ratio suggests that TiO2-SiO2 nanofluid with 1.0% volume concentration will aid the heat transfer for all mixture ratios except for the ratio of 50:50. As a conclusion, the optimum mixture ratios for TiO2-SiO2 nanofluids are attained with 40:60 and 80:20 ratios where the combination of enhancement in thermal conductivity and dynamic viscosity had more advantages to heat transfer as compared to other ratios.
format	Article
author	Khamisah, Abdul Hamid Azmi, W. H. M. F., Nabil R., Mamat Sharma, K. V.
author_facet	Khamisah, Abdul Hamid Azmi, W. H. M. F., Nabil R., Mamat Sharma, K. V.
author_sort	Khamisah, Abdul Hamid
title	Experimental investigation of thermal conductivity and dynamic viscosity on nanoparticle mixture ratios of TiO2-SiO2 nanofluids
title_short	Experimental investigation of thermal conductivity and dynamic viscosity on nanoparticle mixture ratios of TiO2-SiO2 nanofluids
title_full	Experimental investigation of thermal conductivity and dynamic viscosity on nanoparticle mixture ratios of TiO2-SiO2 nanofluids
title_fullStr	Experimental investigation of thermal conductivity and dynamic viscosity on nanoparticle mixture ratios of TiO2-SiO2 nanofluids
title_full_unstemmed	Experimental investigation of thermal conductivity and dynamic viscosity on nanoparticle mixture ratios of TiO2-SiO2 nanofluids
title_sort	experimental investigation of thermal conductivity and dynamic viscosity on nanoparticle mixture ratios of tio2-sio2 nanofluids
publisher	Elsevier Ltd
publishDate	2018
url	http://umpir.ump.edu.my/id/eprint/20416/ http://umpir.ump.edu.my/id/eprint/20416/ http://umpir.ump.edu.my/id/eprint/20416/ http://umpir.ump.edu.my/id/eprint/20416/1/Experimental%20investigation%20of%20thermal%20conductivity.pdf
first_indexed	2023-09-18T22:29:25Z
last_indexed	2023-09-18T22:29:25Z
_version_	1777416184948326400

Experimental investigation of thermal conductivity and dynamic viscosity on nanoparticle mixture ratios of TiO2-SiO2 nanofluids

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