Stable and uniform heat dissipation by nucleate-catalytic nanowires for boiling heat transfer

Beom Seok Kim, Sangwoo Shin, Donghwi Lee, Geehong Choi, Hwanseong Lee, Kyung Min Kim, Hyung Hee Cho

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Boiling-favorable merits of nanowire arrays are discussed for the thermal stability of boiling heat transfer. Local and temporal heat transfer characteristics are evaluated on vertically aligned nanowire arrays using a devised temperature-array sensor. The effects of rough morphology and highly wetting characteristics of nanowires lead to the reliable heat transfer stability/uniformity as well as efficient heat dissipation performances in pool boiling environments. The easy re-wetting and by-productive cavity-like structures via long nanowires can stabilize nucleation dynamics that catalyzes bubble nucleation dispersely and detaches developed bubbles quickly. Nanowires-inspired boiling heat transfer can make a breakthrough in improvements of heat transfer uniformity/stability with spatial and temporal temperature variations less than 1.0 and 2.0 K, respectively. SiNWs can also guarantee enhancements of both heat dissipation capacity and efficiency by more than 100% compared to a plain surface.

Original languageEnglish
Pages (from-to)23-32
Number of pages10
JournalInternational Journal of Heat and Mass Transfer
Volume70
DOIs
Publication statusPublished - 2014 Jan 1

Fingerprint

Heat losses
boiling
Boiling liquids
Nanowires
nanowires
heat transfer
Heat transfer
cooling
wetting
Wetting
Nucleation
bubbles
nucleation
Sensor arrays
Bubbles (in fluids)
plains
Thermodynamic stability
thermal stability
Temperature
cavities

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

Kim, Beom Seok ; Shin, Sangwoo ; Lee, Donghwi ; Choi, Geehong ; Lee, Hwanseong ; Kim, Kyung Min ; Cho, Hyung Hee. / Stable and uniform heat dissipation by nucleate-catalytic nanowires for boiling heat transfer. In: International Journal of Heat and Mass Transfer. 2014 ; Vol. 70. pp. 23-32.
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Stable and uniform heat dissipation by nucleate-catalytic nanowires for boiling heat transfer. / Kim, Beom Seok; Shin, Sangwoo; Lee, Donghwi; Choi, Geehong; Lee, Hwanseong; Kim, Kyung Min; Cho, Hyung Hee.

In: International Journal of Heat and Mass Transfer, Vol. 70, 01.01.2014, p. 23-32.

Research output: Contribution to journalArticle

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AU - Kim, Kyung Min

AU - Cho, Hyung Hee

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