pizza oven has an interior temperature of 250◦C and the outside ambient kitchen temperature is 25◦C. The oven is made of brick 20 cm thick of thermal conductivity kb = 1 W/m/K. It is covered with an insulating material 1 cm thick of conductivity ki = 0.05 W/m/K. The heat transfer coefficient at the insulation surface is h = 15 W/m2/K, while the heat transfer coefficient at the inner surface of the oven has a very large value. Assume a planar (slab) geometry. Determine (a The heat flux from the oven (b If the heat flux is to be reduced to 400 W/m2, what additional thickness of insulation will be required?

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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.