Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.



Mechanistic insights of the surface contribution towards heat transfer in a nanofluid

Abstract

Nanofluids play a very important role in thermal management and heat exchange processes and for a stable nanofluid, the surfactant is a salient material. There are many contrasting reports for the thermal conductivity of nanofluid and the associated heat transport mechanism in nanofluids. In this article, four different types of nanoparticles are synthesized using citric acid and oleic acid as a surfactant, followed by the assessments of their thermal conductivities. For a nanofluid of 3 wt% nanoparticle, coated with citric acid in water 67% reduction in thermal conductivity is observed, on the other hand, 4% enhancement in thermal conductivity is observed for oleic acid-coated nanoparticle in toluene. This anomaly in the thermal transport behaviour of the nanofluid can be related to the surface properties of nanoparticle and polarity of the base fluid. Theoretical calculation based on Molecular dynamics simulations shows that the reduction in long-range interaction and fluid structuration reduces the thermal conductivity in a polar fluid with a polar surfactant coated nanoparticle.

Back to tab navigation

Article information


Accepted
09 Jun 2020
First published
10 Jun 2020

This article is Open Access

Nanoscale Adv., 2020, Accepted Manuscript
Article type
Paper

Mechanistic insights of the surface contribution towards heat transfer in a nanofluid

A. Singh, R. Lenin, N. K. Bari, C. Bakli and C. Bera, Nanoscale Adv., 2020, Accepted Manuscript , DOI: 10.1039/D0NA00452A

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

Reproduced material should be attributed as follows:

  • For reproduction of material from NJC:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
  • For reproduction of material from PCCP:
    [Original citation] - Published by the PCCP Owner Societies.
  • For reproduction of material from PPS:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
  • For reproduction of material from all other RSC journals:
    [Original citation] - Published by The Royal Society of Chemistry.

Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.


Social activity

Search articles by author

Spotlight

Advertisements