A Simple Investigation of the Thermal Effusivity of Silver Nanofluid Using Photopyroelectric Technique

Monir Noroozi, Azmi Zakaria, Shahidan Radiman, Zaidan Abdul Wahab, Sepideh Soltaninejad

Research output: Contribution to journalArticle

Abstract

We investigated the thermal effusivity of silver nanofluids using a microwave technique. During microwave irradiation, silver nanoparticles with a narrow particle size distribution were formed in water and in ethylene glycol, with a polyvinylpyrrolidone stabilizer. We designed and used a front-photopyroelectric technique that employed a metalized polyvinylidene difluoride (PVDF) pyroelectric sensor, with a thermally thick sensor and sample. Using this technique, we calculated the thermal effusivity of the silver nanofluids at a given frequency using the combination of the signal’s normalized amplitude–phase. The thermal effusivity of the nanofluids increased with the number of microwave irradiation cycles, which increased the nanoparticle concentration in the base fluids. A comparison with reported values illustrates the high accuracy obtained from the results of thermal diffusivity, the thermal effusivity of the PVDF sensor, and the thermal effusivity of ethylene glycol as a base fluid (differing by only 1.7 %, 0.5 %, and 2.3 %, respectively). Our method can therefore be used to study nanofluids with varying nanoparticle properties, such as concentration, size, and shape.

Original languageEnglish
Article number84
JournalInternational Journal of Thermophysics
Volume37
Issue number8
DOIs
Publication statusPublished - 1 Aug 2016

Fingerprint

difluorides
silver
vinylidene
microwaves
nanoparticles
glycols
sensors
ethylene
irradiation
fluids
thermal diffusivity
particle size distribution
cycles
water

Keywords

  • Front-photopyroelectric technique
  • Nanofluids
  • PVDF
  • Thermal effusivity

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

A Simple Investigation of the Thermal Effusivity of Silver Nanofluid Using Photopyroelectric Technique. / Noroozi, Monir; Zakaria, Azmi; Radiman, Shahidan; Wahab, Zaidan Abdul; Soltaninejad, Sepideh.

In: International Journal of Thermophysics, Vol. 37, No. 8, 84, 01.08.2016.

Research output: Contribution to journalArticle

Noroozi, Monir ; Zakaria, Azmi ; Radiman, Shahidan ; Wahab, Zaidan Abdul ; Soltaninejad, Sepideh. / A Simple Investigation of the Thermal Effusivity of Silver Nanofluid Using Photopyroelectric Technique. In: International Journal of Thermophysics. 2016 ; Vol. 37, No. 8.
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