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
N1 - Funding Information:
This work was partially supported by the Korea Science and Engineering Foundation (KOSEF) Grant (No. R01-2008-000-20458-0(2008) ) and by the National Research Foundation (NRF) Grant (No. 2010-0029120 ) funded by the Korea Government (MEST).
PY - 2010
Y1 - 2010
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
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U2 - 10.1115/MNHMT2009-18177
DO - 10.1115/MNHMT2009-18177
M3 - Conference contribution
AN - SCOPUS:77954323858
SN - 9780791843895
T3 - Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009
SP - 461
EP - 466
BT - Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009
T2 - ASME 2009 Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009
Y2 - 18 December 2009 through 21 December 2009
ER -