Forced convection heat transfer studies on Al2O3-water nanofluids in a vertical hexagonal sub-channels

• Main Authors: Kamajaya, Ketut, Hasanah, Asiah, Pane, Jupiter S.
• Format: Conference Proceeding
• Language: English
• Subjects: Aluminum oxide; Computational fluid dynamics; Cooling systems; Design optimization; Forced convection; Heat transfer; Heat transfer coefficients; Nanofluids; Numerical analysis; Three dimensional analysis; Weight; Working fluids
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/1.5046604

A study of heat transfer on forced convection heat transfer using Al2O3 –water nanofluids as the working fluid in a vertical hexagonal sub-channel has been conducted. At this time, considerable attention has been given to nanofluids as new materials for heat transfer fluids due to enhanced of properties and behavior. Nanofluids will support the current trend specifically in the application of cooling system. This experiment used Al2O3 –water nanofluids at constant nanofluids concentration 0.10 wt. % in weight percent. Three-dimensional numerical analysis is used in the optimization of the design of the test device in the vertical hexagonal sub-channel, while the experimental data obtained in experiments are used to determine the forced heat transfer coefficient from the heater to the cooling fluid. The results of this study have also been compared with the results of research using base-fluids as working fluids. The results showed that the average increase in nanofluids heat transfer coefficient was greater than 20% compared to the base-fluids or water heat transfer coefficient as coolant.