Thermal conductivity enhancement of binary nanoemulsion(O/S) for absorption application

Hea Youn Sul, Changhwan Cho, Jung Yeul Jung, Yong Tae Kang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Binary nanoemulsions, oil-droplet suspensions in binary solution (H 2O/LiBr), are developed to enhance the heat and mass transfer performance of absorption refrigeration cycles. This paper studies the formation and stability of n-decane in H2O/LiBr nanoemulsions produced by using polyoxyethylene lauryl ether and polyoxyethylene sorbitan monolaurate as surfactant. To stabilize the nanoemulsions in a strong electrolyte, polymeric stabilizer (gum Arabic) is used as a steric stabilizer. The droplet size and the thermal conductivity of binary nanoemulsions are measured by the dynamic light scattering method and the transient hot-wire method, respectively. It is found that the effective thermal conductivity of binary nanoemulsions (1.0 vol % of n-decane in 30 wt % H2O/LiBr) enhances up to 3.59 % with the average droplet size of 44.3 nm. The stability has more significant effect on the thermal conductivity enhancement than the initial drop size.

Original languageEnglish
Title of host publicationProceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009
Pages461-466
Number of pages6
DOIs
Publication statusPublished - 2010 Jul 12
Externally publishedYes
EventASME 2009 Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009 - Shanghai, China
Duration: 2009 Dec 182009 Dec 21

Publication series

NameProceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009
Volume1

Other

OtherASME 2009 Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009
CountryChina
CityShanghai
Period09/12/1809/12/21

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Keywords

  • Binary nanoemulsion
  • Gum arabic
  • Nanoemulsion
  • Thermal conductivity
  • Tyndall effect

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

Cite this

Sul, H. Y., Cho, C., Jung, J. Y., & Kang, Y. T. (2010). Thermal conductivity enhancement of binary nanoemulsion(O/S) for absorption application. In Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009 (pp. 461-466). (Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009; Vol. 1). https://doi.org/10.1115/MNHMT2009-18177