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

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

doi:10.1115/MNHMT2009-18177

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 proceeding › Conference 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 language	English
Title of host publication	Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009
Pages	461-466
Number of pages	6
DOIs	https://doi.org/10.1115/MNHMT2009-18177
Publication status	Published - 2010 Jul 12
Externally published	Yes
Event	ASME 2009 Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009 - Shanghai, China Duration: 2009 Dec 18 → 2009 Dec 21

Publication series

Name	Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009
Volume	1

Other

Other	ASME 2009 Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009
Country	China
City	Shanghai
Period	09/12/18 → 09/12/21

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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

Thermal conductivity enhancement of binary nanoemulsion(O/S) for absorption application. / Sul, Hea Youn; Cho, Changhwan; Jung, Jung Yeul; Kang, Yong Tae.

Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009. 2010. p. 461-466 (Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Sul, HY, Cho, C, Jung, JY & Kang, YT 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. Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009, vol. 1, pp. 461-466, ASME 2009 Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009, Shanghai, China, 09/12/18. https://doi.org/10.1115/MNHMT2009-18177

Sul HY, Cho C, Jung JY, Kang YT. 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. 2010. p. 461-466. (Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009). https://doi.org/10.1115/MNHMT2009-18177

Sul, Hea Youn ; Cho, Changhwan ; Jung, Jung Yeul ; Kang, Yong Tae. / Thermal conductivity enhancement of binary nanoemulsion(O/S) for absorption application. Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009. 2010. pp. 461-466 (Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009).

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AB - 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.

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Access to Document

10.1115/MNHMT2009-18177