Experimental studies on heat transfer of alumina/water nanofluid in a shell and tube heat exchanger with wire coil insert

M. Raja, R. M. Arunachalam, S. Suresh

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The Heat transfer characteristics of Alumina/water nanofluid in a STHE with the aid of coil insert is being studied. Investigations were made on the effects of Peclet number and the effect of the Alumina/water nanofluid concentration on the heat transfer and pumping power characteristics. An increase in the volume concentration of the nanoparticles in the base fluid caused a significant enhancement in the overall heat transfer characteristics compared to that of water. When a wire coil insert was used, further increment in overall heat transfer coefficient was found for a particular peclet number. The superior thermal characteristics of nanofluid obtained with the aid of coil insert may be attributed to the thermal dispersion effect, which caused the temperature distribution to flatten and as a result the temperature difference between the fluid and tube wall steepened resulting in the increase of heat transfer.

Original languageEnglish
Pages (from-to)16-23
Number of pages8
JournalInternational Journal of Mechanical and Materials Engineering
Volume7
Issue number1
Publication statusPublished - Apr 2012

Fingerprint

Die casting inserts
Aluminum Oxide
Tubes (components)
Alumina
Wire
Heat transfer
Peclet number
Water
Fluids
Heat transfer coefficients
Temperature distribution
Nanoparticles
Temperature
Hot Temperature

Keywords

  • Coil
  • Coolant
  • Heat transfer
  • Nanofluid

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

Cite this

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AB - The Heat transfer characteristics of Alumina/water nanofluid in a STHE with the aid of coil insert is being studied. Investigations were made on the effects of Peclet number and the effect of the Alumina/water nanofluid concentration on the heat transfer and pumping power characteristics. An increase in the volume concentration of the nanoparticles in the base fluid caused a significant enhancement in the overall heat transfer characteristics compared to that of water. When a wire coil insert was used, further increment in overall heat transfer coefficient was found for a particular peclet number. The superior thermal characteristics of nanofluid obtained with the aid of coil insert may be attributed to the thermal dispersion effect, which caused the temperature distribution to flatten and as a result the temperature difference between the fluid and tube wall steepened resulting in the increase of heat transfer.

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