Although boiling process has been a major subject of research for several decades, its physics still remain unclear and require further investigation. This study aims at highlighting the effects of the surface wettability on pool boiling heat transfer. Nanocoating techniques were used to vary the water contact angle from 20 to 110° by modifying nanoscale surface topography and chemistry. The experimental results obtained disagree with the predictions of the classical models. A new approach of nucleation mechanism is established to clarify the nexus between the surface wettability and the nucleate boiling heat transfer. In this approach, we introduce the concept of macro- and micro-contact angles to explain the observed phenomenon.
- Nanotechnology Institute
Effects of Surface Wettability on Heterogeneous Boiling
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Phan, HT, Caney, N, Marty, P, Colasson, S, & Gavillet, J. "Effects of Surface Wettability on Heterogeneous Boiling." Proceedings of the ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer. ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 2. Shanghai, China. December 18–21, 2009. pp. 91-96. ASME. https://doi.org/10.1115/MNHMT2009-18461
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