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 |
| Volume | 1 |
| DOIs | |
| 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 |
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
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. Vol. 1 2010. p. 461-466.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Thermal conductivity enhancement of binary nanoemulsion(O/S) for absorption application
AU - Sul, Hea Youn
AU - Cho, Changhwan
AU - Jung, Jung Yeul
AU - Kang, Yong Tae
PY - 2010/7/12
Y1 - 2010/7/12
N2 - 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.
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.
KW - Binary nanoemulsion
KW - Gum arabic
KW - Nanoemulsion
KW - Thermal conductivity
KW - Tyndall effect
UR - http://www.scopus.com/inward/record.url?scp=77954323858&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77954323858&partnerID=8YFLogxK
U2 - 10.1115/MNHMT2009-18177
DO - 10.1115/MNHMT2009-18177
M3 - Conference contribution
SN - 9780791843895
VL - 1
SP - 461
EP - 466
BT - Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009
ER -