A slab of meat 25.4 mm thick originally at a uniform temperature of 10 ℃ is to be cooked from both sides until the center reaches 121 ℃ in an oven at 177 ℃. The convection coefficient can be assumed constant at 25.6 W/m2.K. Neglect any latent heat changes and calculate the time required. The thermal conductivity is 0.69 W/m.K and the thermal diffusivity 5.85 x 10-4 m2/h. Use the Heisler chart. Answer:0.8 h

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Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.