Question

Using the data given below, calculate the drop in the temperature of molten aluminum as it flows in a 15 cm long round channel of 2 cm diameter in a water-cooled die and what will be the temperature drop

asked Dec 21, 2021 89.3k views

Using the data given below, calculate the drop in the temperature of molten aluminum as it flows in a 15 cm long round channel of 2 cm diameter in a water-cooled die and what will be the temperature drop if the metal were to flow through a 15 cm long channel having a square cross-section (side = 2 cm) in an identical mold? Assume that Al enters the channel at 800 C. The average flow velocity is 4 cm/s. Given: density of Al=2.2 g/cm3, specific heat of Al=0.28 cal/g.K, mold-metal interface heat transfer coefficient=0.01 cal/cm2.s.K, and the die temperature=27 C (assumed constant).