Heat transfer enhancement of turbulent natural convection adjacent to vertical heated plate

Enhancement of heat transfer was investigated experimentally on natural convection adjacent to a vertical heated plate. In order to promote heat transfer from the heated plate, a V-shaped diverter plate of which the edge faced upstream was attached onto the surface of the vertical plate. The diverter plate redirects high-temperature fluids toward both sides of the plate and introduces low-temperature ambient fluids behind the plate instead. These two mechanisms enhance heat transfer, in particular, in the region behind the diverter plate. Local heat transfer coefficients around the diverter plate were measured using water as a test fluid. The coefficients behind the diverter plate reached 2.5 times of those without the diverter plate. The optimum heights and angles of the diverter plate that make the heat transfer maximum were also studied experimentally.