The temperature of the inside and the outside surface of a brickwork of a furnace have been noted to be 650°C and 250°C. Make calculations for the percentage decrease in heat loss if the thickness of the brick work is increased by 100 percent. The ambient temperature is 30°C. Assume that the thermal conductivity of the brickwork and the convective heat transfer coefficient remain the same before and after the increase in thickness.

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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.