Comparative studies on thermal performance of conic cut twist tape inserts with SiO<inf>2</inf> and TiO<inf>2</inf> nanofluids

Sami D. Salman, Abdul Amir H. Kadhum, Mohd Sobri Takriff, Abu Bakar Mohamad

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This paper presents a comparison study on thermal performance conic cut twist tape inserts in laminar flow of nanofluids through a constant heat fluxed tube. Three tape configurations, namely, quadrant cut twisted tape (QCT), parabolic half cut twisted tape (PCT), and triangular cut twisted (VCT) of twist ratio y = 2.93 and cut depth de = 0.5 cm were used with 1% and 2% volume concentration of SiO<inf>2</inf>/water and TiO<inf>2</inf>/water nanofluids. Typical twist tape with twist ratio of y = 2.93 was used for comparison. The results show that the heat transfer was enhanced by increasing of Reynolds number and nanoparticles concentration of nanofluid. The results have also revealed that the use of twist tape enhanced the heat transfer coefficient significantly and maximum heat transfer enhancement was achieved by the presence of triangular cut twist tape insert with 2% volume concentration of SiO<inf>2</inf> nanofluid. Over the range investigated, the maximum thermal performance factor of 5.13 is found with the simultaneous use of the SiO<inf>2</inf> nanofluid at 2% volume concentration VCT at Reynolds number of 220. Furthermore, new empirical correlations for Nusselt number, friction factor, and thermal performance factor are developed and reported.

Original languageEnglish
Article number921394
JournalJournal of Nanomaterials
Volume2015
DOIs
Publication statusPublished - 2015

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Die casting inserts
Tapes
Reynolds number
Heat transfer
Water
Nusselt number
Hot Temperature
TiO2-SiO2
Laminar flow
Heat transfer coefficients
Friction
Nanoparticles

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Comparative studies on thermal performance of conic cut twist tape inserts with SiO<inf>2</inf> and TiO<inf>2</inf> nanofluids. / Salman, Sami D.; Kadhum, Abdul Amir H.; Takriff, Mohd Sobri; Mohamad, Abu Bakar.

In: Journal of Nanomaterials, Vol. 2015, 921394, 2015.

Research output: Contribution to journalArticle

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