TY - GEN
T1 - Immersion condensation on scalable oil-infused nanostructures for high performance thermal management
AU - Xiao, R.
AU - Miljkovic, N.
AU - Enright, R.
AU - Wang, E. N.
PY - 2013
Y1 - 2013
N2 - Enhancing condensation heat transfer is important for broad applications ranging from power generation to thermal management. Significant efforts have focused on easy removal of the condensate, yet the other desired properties of low contact angles and high nucleation densities for high heat transfer performance have been typically neglected. In this work, we demonstrate immersion condensation on scalable oil-infused copper oxide nanostructures with heterogeneous coatings, where water droplets nucleate immersed within the oil. The combination of surface energy heterogeneity, reduced oil-water interfacial energy, and surface structuring enabled a drastically increased nucleation density while maintaining easy condensate removal. Accordingly, we demonstrated approximately a 100% increase in heat transfer coefficient compared to state-of-the-art dropwise condensation surfaces in the presence of non-condensable gases. Such surfaces promise wide application in a variety of heat transfer and resource conserving systems.
AB - Enhancing condensation heat transfer is important for broad applications ranging from power generation to thermal management. Significant efforts have focused on easy removal of the condensate, yet the other desired properties of low contact angles and high nucleation densities for high heat transfer performance have been typically neglected. In this work, we demonstrate immersion condensation on scalable oil-infused copper oxide nanostructures with heterogeneous coatings, where water droplets nucleate immersed within the oil. The combination of surface energy heterogeneity, reduced oil-water interfacial energy, and surface structuring enabled a drastically increased nucleation density while maintaining easy condensate removal. Accordingly, we demonstrated approximately a 100% increase in heat transfer coefficient compared to state-of-the-art dropwise condensation surfaces in the presence of non-condensable gases. Such surfaces promise wide application in a variety of heat transfer and resource conserving systems.
KW - composite surface
KW - condensation heat transfer
KW - heterogeneous surface
KW - nanostructure
UR - http://www.scopus.com/inward/record.url?scp=84891696884&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84891696884&partnerID=8YFLogxK
U2 - 10.1109/Transducers.2013.6627389
DO - 10.1109/Transducers.2013.6627389
M3 - Conference contribution
AN - SCOPUS:84891696884
SN - 9781467359818
T3 - 2013 Transducers and Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013
SP - 2807
EP - 2810
BT - 2013 Transducers and Eurosensors XXVII
T2 - 2013 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013
Y2 - 16 June 2013 through 20 June 2013
ER -