The composite wall which is composed of 10 cm brick (k=0.40 W/m2- C), 2 cm cellotex (k=0.03 W/m2- OC), and 6 cm (k=0.30 W/m2- OC), has an outer (brick) temperature T=23 OC and an inner (plaster) temperature T=90 OC. Find the temperature between the cellotex and plaster in OC.

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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.