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Effect of ZnO-water based nanofluids from sonochemical synthesis method on heat transfer in a circular flow passage

Present research work highlighted the synthesis of ZnO Nanoparticles by sonochemical method and its positive effects on enhancement of heat transfer while used as water based nanofluids in a circular tube heat exchanger. ZnO nanoparticles were synthesized by using Zinc acetate (ZnC4H6O4) and Sodium...

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Main Authors: Ahmed, Waqar, Chowdhury, Z. Z., Kazi, S. N., Johan, M. R., Akram, Naveed, Oon, C. S.
Format: Article
Published: Elsevier 2020
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.um.edu.my/36704/
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spelling my.um.eprints.367042024-11-04T08:05:50Z http://eprints.um.edu.my/36704/ Effect of ZnO-water based nanofluids from sonochemical synthesis method on heat transfer in a circular flow passage Ahmed, Waqar Chowdhury, Z. Z. Kazi, S. N. Johan, M. R. Akram, Naveed Oon, C. S. TJ Mechanical engineering and machinery Present research work highlighted the synthesis of ZnO Nanoparticles by sonochemical method and its positive effects on enhancement of heat transfer while used as water based nanofluids in a circular tube heat exchanger. ZnO nanoparticles were synthesized by using Zinc acetate (ZnC4H6O4) and Sodium Hydroxide (NaOH) as the raw materials. Proper formation of ZnO nanoparticles were confirmed by XRD, FTIR, FESEM, EDX mapping and UV-vis spectrum characterizations. ZnO nanoparticles were been dispersed in distilled water by uisng high probe sonication and its concentration was varied (0.1%, 0.075%, 0.05% and 0.025%) to study its effect on convective heat transfer (Nusselt number) with the variation of Reynolds number in single tube circular heat exchanger. Positive enhancement in thermal conductivity was observed with the addition of ZnO nanoparticles in the base fluid and studied its performance at 50 degrees C heat transfer surface temperature and 30 degrees C bulk temperature of the nanofluids. About 49% increase in Nusselt numbers was observed at 0.1% wt. concentration of ZnO-water based flowing Nano fluid. At the highest Reynolds number (Examined), there was about 50% heat transfer enhancement noticed at 0.1% concentration of ZnO nanofluid. While all other weight % concentrations also showed enhanced heat trasnfer properties as compare to base fluid. The ZnO with distilled water nanofluids gives encourging results for heat trnasfer improvments. Elsevier 2020-05 Article PeerReviewed Ahmed, Waqar and Chowdhury, Z. Z. and Kazi, S. N. and Johan, M. R. and Akram, Naveed and Oon, C. S. (2020) Effect of ZnO-water based nanofluids from sonochemical synthesis method on heat transfer in a circular flow passage. International Communications in Heat and Mass Transfer, 114. ISSN 0735-1933, DOI https://doi.org/10.1016/j.icheatmasstransfer.2020.104591 <https://doi.org/10.1016/j.icheatmasstransfer.2020.104591>. 10.1016/j.icheatmasstransfer.2020.104591
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 TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Ahmed, Waqar
Chowdhury, Z. Z.
Kazi, S. N.
Johan, M. R.
Akram, Naveed
Oon, C. S.
Effect of ZnO-water based nanofluids from sonochemical synthesis method on heat transfer in a circular flow passage
description Present research work highlighted the synthesis of ZnO Nanoparticles by sonochemical method and its positive effects on enhancement of heat transfer while used as water based nanofluids in a circular tube heat exchanger. ZnO nanoparticles were synthesized by using Zinc acetate (ZnC4H6O4) and Sodium Hydroxide (NaOH) as the raw materials. Proper formation of ZnO nanoparticles were confirmed by XRD, FTIR, FESEM, EDX mapping and UV-vis spectrum characterizations. ZnO nanoparticles were been dispersed in distilled water by uisng high probe sonication and its concentration was varied (0.1%, 0.075%, 0.05% and 0.025%) to study its effect on convective heat transfer (Nusselt number) with the variation of Reynolds number in single tube circular heat exchanger. Positive enhancement in thermal conductivity was observed with the addition of ZnO nanoparticles in the base fluid and studied its performance at 50 degrees C heat transfer surface temperature and 30 degrees C bulk temperature of the nanofluids. About 49% increase in Nusselt numbers was observed at 0.1% wt. concentration of ZnO-water based flowing Nano fluid. At the highest Reynolds number (Examined), there was about 50% heat transfer enhancement noticed at 0.1% concentration of ZnO nanofluid. While all other weight % concentrations also showed enhanced heat trasnfer properties as compare to base fluid. The ZnO with distilled water nanofluids gives encourging results for heat trnasfer improvments.
format Article
author Ahmed, Waqar
Chowdhury, Z. Z.
Kazi, S. N.
Johan, M. R.
Akram, Naveed
Oon, C. S.
author_facet Ahmed, Waqar
Chowdhury, Z. Z.
Kazi, S. N.
Johan, M. R.
Akram, Naveed
Oon, C. S.
author_sort Ahmed, Waqar
title Effect of ZnO-water based nanofluids from sonochemical synthesis method on heat transfer in a circular flow passage
title_short Effect of ZnO-water based nanofluids from sonochemical synthesis method on heat transfer in a circular flow passage
title_full Effect of ZnO-water based nanofluids from sonochemical synthesis method on heat transfer in a circular flow passage
title_fullStr Effect of ZnO-water based nanofluids from sonochemical synthesis method on heat transfer in a circular flow passage
title_full_unstemmed Effect of ZnO-water based nanofluids from sonochemical synthesis method on heat transfer in a circular flow passage
title_sort effect of zno-water based nanofluids from sonochemical synthesis method on heat transfer in a circular flow passage
publisher Elsevier
publishDate 2020
url http://eprints.um.edu.my/36704/
_version_ 1814933261207470080
score 13.211869

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