Impact of the TiO 2 nanosolution concentration on heat transfer enhancement of the twin impingement jet of a heated aluminum plate

Mahir Faris Abdullah, Rozli Zulkifli, Zambri Harun, Shahrir Abdullah, Wan Aizon Wan Ghopa, Asmaa Soheil Najm, Noor Humam Sulaiman

Research output: Contribution to journalArticle

Abstract

Here, the researchers carried out an experimental analysis of the effect of the TiO 2 nanosolution concentration on the heat transfer of the twin jet impingement on an aluminum plate surface. We used three different heat transfer enhancement processes. We considered the TiO 2 nanosolution coat, aluminum plate heat sink, and a twin jet impingement system. We also analyzed several other parameters like the nozzle spacing, nanosolution concentration, and the nozzle-to-plate distance and noted if these parameters could increase the heat transfer rate of the twin jet impingement system on a hot aluminum surface. The researchers prepared different nanosolutions, which consisted of varying concentrations, and coated them on the metal surface. Thereafter, we carried out an X-ray diffraction (XRD) and a Field Emission Scanning Electron Microscopy (FESEM) analysis for determining the structure and the homogeneous surface coating of the nanosolutions. This article also studied the different positions of the twin jets for determining the maximal Nusselt number (Nu). The researchers analyzed all the results and noted that the flow structure of the twin impingement jets at the interference zone was the major issue affecting the increase in the heat transfer rate. The combined influence of the spacing and nanoparticle concentration affected the flow structure, and therefore the heat transfer properties, wherein the Reynolds number (1% by volume concentration) maximally affected the Nusselt number. This improved the performance of various industrial and engineering applications. Hypothesis: Nusselt number was affected by the ratio of the nanoparticle size to the surface roughness. Heat transfer characteristics could be improved if the researchers selected an appropriate impingement system and selected the optimal levels of other factors. The surface coating with the TiO 2 nanosolution also positively affected the heat transfer rate.

Original languageEnglish
Article number176
JournalMicromachines
Volume10
Issue number3
DOIs
Publication statusPublished - 1 Jan 2019

Fingerprint

Heat transfer
Aluminum
Nusselt number
Flow structure
Nozzles
Nanoparticles
Coatings
Heat sinks
Field emission
Reynolds number
Surface roughness
X ray diffraction
Scanning electron microscopy
Metals

Keywords

  • Heat transfer
  • Impingement jet
  • Nano coating
  • Nusselt number
  • TiO nanoparticles

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Cite this

Impact of the TiO 2 nanosolution concentration on heat transfer enhancement of the twin impingement jet of a heated aluminum plate . / Abdullah, Mahir Faris; Zulkifli, Rozli; Harun, Zambri; Abdullah, Shahrir; Wan Ghopa, Wan Aizon; Najm, Asmaa Soheil; Sulaiman, Noor Humam.

In: Micromachines, Vol. 10, No. 3, 176, 01.01.2019.

Research output: Contribution to journalArticle

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AB - Here, the researchers carried out an experimental analysis of the effect of the TiO 2 nanosolution concentration on the heat transfer of the twin jet impingement on an aluminum plate surface. We used three different heat transfer enhancement processes. We considered the TiO 2 nanosolution coat, aluminum plate heat sink, and a twin jet impingement system. We also analyzed several other parameters like the nozzle spacing, nanosolution concentration, and the nozzle-to-plate distance and noted if these parameters could increase the heat transfer rate of the twin jet impingement system on a hot aluminum surface. The researchers prepared different nanosolutions, which consisted of varying concentrations, and coated them on the metal surface. Thereafter, we carried out an X-ray diffraction (XRD) and a Field Emission Scanning Electron Microscopy (FESEM) analysis for determining the structure and the homogeneous surface coating of the nanosolutions. This article also studied the different positions of the twin jets for determining the maximal Nusselt number (Nu). The researchers analyzed all the results and noted that the flow structure of the twin impingement jets at the interference zone was the major issue affecting the increase in the heat transfer rate. The combined influence of the spacing and nanoparticle concentration affected the flow structure, and therefore the heat transfer properties, wherein the Reynolds number (1% by volume concentration) maximally affected the Nusselt number. This improved the performance of various industrial and engineering applications. Hypothesis: Nusselt number was affected by the ratio of the nanoparticle size to the surface roughness. Heat transfer characteristics could be improved if the researchers selected an appropriate impingement system and selected the optimal levels of other factors. The surface coating with the TiO 2 nanosolution also positively affected the heat transfer rate.

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