A loaf bread at 120 °C is cooling in air at 20 °C. The dimension of the loaf is as 10 cm by 12 cm by 20 cm. h = 10 W/m2 K, emissivity of the loaf = 0.76, Kloaf = 0.121 Find: Total heat loss from the bread. Assume that Conduction from the loaf to cooling rack is negligible due to the small area involved. The heat loss is therefore a combination of convection and radiation.