Determine the average convection heat loss from both the top and bottom of a flat plate at T; = 80 °C with air in parallel flow at To = 25°C,

U0 = 3 m/s. The plate is t = 1mm thick, L = 25 mm long in the flow direction and a depth of w = 50 mm. Neglect the heat loss from the edges of the plate. For air at this temperature: v = 18.4 x 106 m?/s, Pr = 0.704 and k =0.0282 W/m-K