A flaked cereal is of thickness 2L = 1.2 mm. The density, specific heat, and thermal conductivity of the flake are 700 kg/m³, c_p = 2400 J/kg · K, and k = 0.34 W/m · K, respectively. The product is to be baked by increasing its temperature from T_i = 20°C to T_f = 220°C in a convection oven, through which the product is carried on a conveyor. If the oven is L_o = 3 m long and the convection heat transfer coefficient at the product surface and oven air temperature are h = 55 W/m²  · K and T_∞ = 300°C, respectively, determine the required conveyor velocity, V. An engineer suggests that if the flake thickness is reduced to 2L = 1.0 mm the conveyor velocity can be increased, resulting in higher productivity. Determine the required conveyor velocity for the thinner flake.

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Bocel 2L = 1.2 mm Q Conveyor belt- Cereal product V Lo -Oven h = 55 W/m².K T.. = 300°C V