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- Title
Experimental investigation of heat transfer and pressure drop in metal-foam-filled circular and flattened tubes.
- Authors
Rezaei, Ehsan; Abbassi, Abbas
- Abstract
Heat transfer and pressure drop of laminar flow inside circular and flattened tubes partially and fully filled with copper metal foam were experimentally investigated. The wall heated by a constant and uniform heat flux and water was used as the working fluid with Reynolds number ranging 500–2300. Six different configurations for tubes and porous media supposed and the Nusselt number and pressure drop data are reported and compared. The experimental results revealed that the porous media and flattening the tube have a significant effect on the thermal and hydrodynamic performances of the system due to the heat spreading through the copper matrix, better mixing of the fluid and extending the heat transfer area. Performance evaluation was carried out, and fully filled tubes were reported as having the best performance. The experimental data are also compared to well-known correlations from the literature, and new correlations are proposed to predict the Nusselt number and friction factor.
- Subjects
PRESSURE drop (Fluid dynamics); HEAT transfer; HEAT transfer fluids; NUSSELT number; REYNOLDS number; LAMINAR flow
- Publication
Journal of Thermal Analysis & Calorimetry, 2021, Vol 146, Issue 1, p469
- ISSN
1388-6150
- Publication type
Article
- DOI
10.1007/s10973-020-09909-z