A constant heat flux comes to the x = 0 surface of a plane wall with a thickness of 25 cm and a heat transfer coefficient of 15 W / mK. The plane wall loses heat from the x = L surface by both convection and radiation. The temperature of the x = L surface is 45 ° C, the spreading rate is 0.8, and this surface is exposed to 20 ° C temperature and 15 W / m2K heat convection conditions. Since the temperature of the surfaces surrounding the plane wall is 16 ° C, determine the temperature of the x = 0 surface of the wall.

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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.