Experimental analysis of conical baffles with rifts on heat transfer and pressure drop
| Autor: | Gülay Yakar |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Convective heat transfer 020209 energy Heat transfer surface area Baffle 02 engineering and technology Heat transfer and pressure drop Heating Boundary-layer separation 0203 mechanical engineering Rift Heat transfer 0202 electrical engineering electronic engineering information engineering Tube (fluid conveyance) Heat convection Electrical and Electronic Engineering conical baffle Pressure drop Instrumentation Physics::Atmospheric and Oceanic Physics Experimental analysis Mechanics Conical surface 020303 mechanical engineering & transports Control and Systems Engineering Boundary layers Drops Inclination angles |
| Popis: | In the present study, convective heat transfer to the air from a heating tube attached to conical baffles with rift was experimentally examined. The air entering the test section first contacts the large surface of the conical baffle. Therefore, the conical baffle both directs the air toward the heating surface and increases the heat transfer surface area. In the experiments, baffles with inclination angles of 45°, 60°, and 80° were used. The baffles were placed on the heating tube at the pitch of 15 mm. The temperature of the heating fluid (water) was kept fixed at 65°C. In addition to the riftless baffles, the experiments were carried out by using baffles with a rift spacing of 1.5 and 3.5 mm so that the boundary layer separation mechanism could be accelerated. Experimental results for eight different velocities of airflow (2–20 m/s) were presented. For the inclination angle of 60°, the increase in the heat transfer of the baffle with rift was 13% at a rift spacing of 1.5 mm and 4% at a rift spacing of 3.5 mm according to the riftless baffle. In addition, for the inclination angle of 60°, the pressure drop values of the riftless and the rift spacing of 1.5 and 3.5 mm were almost the same. © 2018, © 2018 Taylor & Francis. |
| Databáze: | OpenAIRE |
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