An experimental study on flow boiling characteristics of phema nano-coated surfaces in a microchannel
Khalili Sadaghiani, Abdolali and Şişman, Yağmur and Özaydın İnce, Gözde and Koşar, Ali (2016) An experimental study on flow boiling characteristics of phema nano-coated surfaces in a microchannel. In: 5th ASME International Conference on Micro/Nanoscale Heat and Mass Transfer (MNHMT2016), Biopolis, Singapore
This is the latest version of this item.
In this study, the effect of pHEMA (Polyhydroxyethylmethacrylate) nanostructure coated surfaces on flow boiling was investigated in a rectangular microchannel. Experiments were conducted using deionized water as the working fluid to investigate flow boiling in a microchannel with dimensions of 14 cm length, 1.5 cm width, and 500 mu m depth. The effect of pHEMA coatings (coated on 1.5 x 1.5 cm(2) silicon plates) on heat transfer coefficients and flow patterns was assessed and supported using a high speed camera system. Although the contact angle decreases on nano-coated surfaces, due to surface porosity, boiling heat transfer coefficient increases. Furthermore, visualization results indicated that uncoated surfaces experienced a smaller nucleate boiling region. It was also observed that dryout occurs at higher heat fluxes for coated surfaces.
Available Versions of this Item
Repository Staff Only: item control page