A cold storage room is constructed of an inner layer of 12.7 mm of pine, a middle layer of 101.6 mm of cork board, and an outer layer of 76.2 mm of concrete. The wall surface temperature is 255.4 K inside the cold room and 297.1 K at the outside surface of the concrete. The conductivities for pine, for cork board and for concrete are 0.151 W/m.K, 0.0433 W/m.K, 0.762 W/m.K respectively. Calculate the heat loss in W for 1 m2 and the temperature at the interface between the wood and cork board.

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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.