Thermal conductivity measurement of methanol-based nanofluids with Al 2O 3 and SiO 2 nanoparticles

Changwei Pang, Jung Yeul Jung, Jae Won Lee, Yong Tae Kang

Research output: Contribution to journalArticle

110 Citations (Scopus)

Abstract

In this study, the methanol-based nanofluids with Al 2O 3 and SiO 2 nanoparticles are prepared by dispersing nanoparticles in pure methanol using an ultrasonic equipment. The main objective of this paper is to measure the thermal conductivity of the methanol-based nanofluids. We have also measured the zeta potential, particle size and Tyndall effect for the present nanofluids. The transient hot-wire method is applied for measuring the thermal conductivity of methanol-based nanofluids. The measurement uncertainty in repeatability is obtained as 1.95% for deionized (DI) water and 1.34% for pure methanol, respectively. The effective thermal conductivity of methanol-based nanofluids is measured at a temperature of 293.15 K. The results show that the thermal conductivity increases with an increase of the nanoparticle volume fraction, and the enhancement is observed to be 10.74% and 14.29% over the basefluid at the volume fraction of 0.5vol% for Al 2O 3 and SiO 2 nanoparticles, respectively. Clustering of nanoparticles is considered to be the main reason for the thermal conductivity enhancement.

Original languageEnglish
Pages (from-to)5597-5602
Number of pages6
JournalInternational Journal of Heat and Mass Transfer
Volume55
Issue number21-22
DOIs
Publication statusPublished - 2012 Oct 1
Externally publishedYes

Fingerprint

Methanol
Thermal conductivity
thermal conductivity
methyl alcohol
Nanoparticles
nanoparticles
Volume fraction
Ultrasonic equipment
augmentation
Deionized water
dispersing
Zeta potential
ultrasonics
Particle size
wire
Wire
water
Temperature
temperature

Keywords

  • Clustering
  • Methanol-based nanofluids
  • Particle size
  • Thermal conductivity
  • Zeta potential

ASJC Scopus subject areas

  • Mechanical Engineering
  • Condensed Matter Physics
  • Fluid Flow and Transfer Processes

Cite this

Thermal conductivity measurement of methanol-based nanofluids with Al 2O 3 and SiO 2 nanoparticles. / Pang, Changwei; Jung, Jung Yeul; Lee, Jae Won; Kang, Yong Tae.

In: International Journal of Heat and Mass Transfer, Vol. 55, No. 21-22, 01.10.2012, p. 5597-5602.

Research output: Contribution to journalArticle

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