Switchable Wettability for Condensation Heat Transfer
| Autor: | Jonathan M. Ludwicki, Paul H. Steen, Franklin Robinson |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Condensation heat transfer Condensation 02 engineering and technology Heat transfer coefficient 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Chemical engineering Heat transfer General Materials Science Wetting 0210 nano-technology |
| Zdroj: | ACS Applied Materials & Interfaces. 12:22115-22119 |
| ISSN: | 1944-8252 1944-8244 |
| Popis: | Condensation proceeds as dropwise or filmwise depending on the wettability of the condensing surface. These two modes of condensation have disparate heat transfer coefficients, with dropwise often exceeding filmwise. This work reports a surface with switchable superhydrophilic to hydrophobic wetting behavior that can exhibit both modes of condensation. Relative to the highly wetting state, which yields filmwise condensation, the nonwetting state exhibits dropwise condensation and twice the heat transfer coefficient. Relevance to thermal management is additionally discussed. |
| Databáze: | OpenAIRE |
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