It is desired to maintain the interior of a refrigerator whose base dimensions are 45 x 45 cm and the height is 1.2 m at 5 C. The walls of the refrigerator are made up of two sheets of steel, 0.318 cm thick with 5 cm of fiberglass insulation. The internal and external coefficients are, respectively, 10 W/m C and 15 W/m "C. If the room temperature in the kitchen is 30C, estimate the heat flux that must be removed to maintain the specified conditions. Thermal conductivity of glass wool = 0.03 W/mK