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Static and dynamic combined effects on the thermal conductivity of water based ironoxide nanofluids: Experiments and theories

Reasoning of particular mechanism of anomalous thermal transport behaviors is not identified yet for the nanofluids. In this research, the thermal conductivity of maghemite (MH) nanoparticles dispersed deionized water (DW) nanofluids (MH/DW) has been evaluated for the first time using the modified e...

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Main Authors: Arifutzzaman, A., Ismail, Ahmad Faris Bin, Alam, Md Zahangir, Khan, Ahsan Ali, Aslfattahi, Navid, Saidur, R.
Format: Article
Published: Taylor & Francis Ltd 2021
Subjects:
Q Science (General)
T Technology (General)
Online Access:http://eprints.um.edu.my/35144/
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spelling my.um.eprints.351442022-09-05T01:00:07Z http://eprints.um.edu.my/35144/ Static and dynamic combined effects on the thermal conductivity of water based ironoxide nanofluids: Experiments and theories Arifutzzaman, A. Ismail, Ahmad Faris Bin Alam, Md Zahangir Khan, Ahsan Ali Aslfattahi, Navid Saidur, R. Q Science (General) T Technology (General) Reasoning of particular mechanism of anomalous thermal transport behaviors is not identified yet for the nanofluids. In this research, the thermal conductivity of maghemite (MH) nanoparticles dispersed deionized water (DW) nanofluids (MH/DW) has been evaluated for the first time using the modified effective medium theories (EMTs). EMTs have been modified with the consideration of static and dynamic effects combinedly for the analysis of anomalous behaviors of thermal conductivity enhancements of the spherical nanoparticles dispersed nanofluids. MH nanoparticles (similar to 20 nm) were synthesized using chemical co-precipitation techniques. MH/DW nanofluids were prepared with the varying MH nanoparticles loading in DW and thermal conductivity was measured using KD2 pro device. The thermal conductivity enhancement (similar to 32 %) was found to be increased linearly with the increasing MH nanoparticle concentration and nonlinearly with the increasing temperature. Existing Maxwell and Maxwell Gantt EMA (MG-EMA) models exhibited awful under-prediction from experimental thermal conductivities of MH/DW nanofluids. Modified model with considering static and dynamic mechanisms of MH nanoparticles combinedly showed reasonably very good agreement with the experimental thermal conductivities of MH/DW nanofluids at elevated temperature. This modified model opens the new windows to analyze the insight of the thermophysical properties of various types of nanofluids by introducing potential parameters. Taylor & Francis Ltd 2021-04-03 Article PeerReviewed Arifutzzaman, A. and Ismail, Ahmad Faris Bin and Alam, Md Zahangir and Khan, Ahsan Ali and Aslfattahi, Navid and Saidur, R. (2021) Static and dynamic combined effects on the thermal conductivity of water based ironoxide nanofluids: Experiments and theories. Smart Science, 9 (2). pp. 133-146. ISSN 2308-0477, DOI https://doi.org/10.1080/23080477.2021.1907700 <https://doi.org/10.1080/23080477.2021.1907700>. 10.1080/23080477.2021.1907700
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
T Technology (General)
spellingShingle Q Science (General)
T Technology (General)
Arifutzzaman, A.
Ismail, Ahmad Faris Bin
Alam, Md Zahangir
Khan, Ahsan Ali
Aslfattahi, Navid
Saidur, R.
Static and dynamic combined effects on the thermal conductivity of water based ironoxide nanofluids: Experiments and theories
description Reasoning of particular mechanism of anomalous thermal transport behaviors is not identified yet for the nanofluids. In this research, the thermal conductivity of maghemite (MH) nanoparticles dispersed deionized water (DW) nanofluids (MH/DW) has been evaluated for the first time using the modified effective medium theories (EMTs). EMTs have been modified with the consideration of static and dynamic effects combinedly for the analysis of anomalous behaviors of thermal conductivity enhancements of the spherical nanoparticles dispersed nanofluids. MH nanoparticles (similar to 20 nm) were synthesized using chemical co-precipitation techniques. MH/DW nanofluids were prepared with the varying MH nanoparticles loading in DW and thermal conductivity was measured using KD2 pro device. The thermal conductivity enhancement (similar to 32 %) was found to be increased linearly with the increasing MH nanoparticle concentration and nonlinearly with the increasing temperature. Existing Maxwell and Maxwell Gantt EMA (MG-EMA) models exhibited awful under-prediction from experimental thermal conductivities of MH/DW nanofluids. Modified model with considering static and dynamic mechanisms of MH nanoparticles combinedly showed reasonably very good agreement with the experimental thermal conductivities of MH/DW nanofluids at elevated temperature. This modified model opens the new windows to analyze the insight of the thermophysical properties of various types of nanofluids by introducing potential parameters.
format Article
author Arifutzzaman, A.
Ismail, Ahmad Faris Bin
Alam, Md Zahangir
Khan, Ahsan Ali
Aslfattahi, Navid
Saidur, R.
author_facet Arifutzzaman, A.
Ismail, Ahmad Faris Bin
Alam, Md Zahangir
Khan, Ahsan Ali
Aslfattahi, Navid
Saidur, R.
author_sort Arifutzzaman, A.
title Static and dynamic combined effects on the thermal conductivity of water based ironoxide nanofluids: Experiments and theories
title_short Static and dynamic combined effects on the thermal conductivity of water based ironoxide nanofluids: Experiments and theories
title_full Static and dynamic combined effects on the thermal conductivity of water based ironoxide nanofluids: Experiments and theories
title_fullStr Static and dynamic combined effects on the thermal conductivity of water based ironoxide nanofluids: Experiments and theories
title_full_unstemmed Static and dynamic combined effects on the thermal conductivity of water based ironoxide nanofluids: Experiments and theories
title_sort static and dynamic combined effects on the thermal conductivity of water based ironoxide nanofluids: experiments and theories
publisher Taylor & Francis Ltd
publishDate 2021
url http://eprints.um.edu.my/35144/
_version_ 1744649218170028032
score 13.211869

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