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AN EXPERIMENTAL STUDY OF FORCED CONVECTION HEAT TRANSFER IN A VERTICAL PACKED DUCT | ||
| AL-TAQANI | ||
| Article 1, Volume 30, Issue 1, 2017, Pages 0-0 | ||
| Author | ||
| Dr.Kifah H.Hilal | ||
| Abstract | ||
| This paper investigate the effect of tilt angle on heat transfer through (12.5*12.5*100 cm) packed duct experimentally. The duct was at a vertical position ,heated at constant heat flux varying from (0.2 to 0.5 kW/m2) and the tests were done for Reynolds number (8010 to 18400). The porous duct were packed by ( 12 piece) of commercial galvanized steel wire mesh and arranged courrgeatly in (V end) shape (zig-zag) at the center line axial with pad porosity (Ɛ=0.99). The results showed that Nusselt number was increasing with increasing heat flux and Reynolds number. Average Nusselt number obtained in this work at vertical duct was increased up to ( 150% ) when compared to empty duct and up to ( 40% ) when compared to horizontal duct at the same tested condition. This results indicated that heat transfer in vertical duct is enhanced than horizontal duct. | ||
| Keywords | ||
| Vertical porous duct; heat transfer; wire mesh pad | ||
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