An experimental study on flow boiling characteristics of phema nano-coated surfaces in a microchannel

Warning The system is temporarily closed to updates for reporting purpose.

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.

[thumbnail of MNHMT2016-6573_AK.pdf] PDF
MNHMT2016-6573_AK.pdf
Restricted to Repository staff only

Download (1MB) | Request a copy

Abstract

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.
Item Type: Papers in Conference Proceedings
Uncontrolled Keywords: Flow boiling; Microchannel; pHEMA Nano-coated; Heat transfer
Subjects: T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering and Natural Sciences > Academic programs > Mechatronics
Faculty of Engineering and Natural Sciences > Academic programs > Materials Science & Eng.
Faculty of Engineering and Natural Sciences
Depositing User: Ali Koşar
Date Deposited: 11 Nov 2016 11:50
Last Modified: 26 Apr 2022 09:23
URI: https://research.sabanciuniv.edu/id/eprint/30111

Available Versions of this Item

Actions (login required)

View Item
View Item