Calculate the specific surface area (SSA) of clay particles with a particle size of 0.002 mm. Assume, for simplicity, that the particles are perfect cubes. Further assume that the particles have a density of 2.65 g/cm3 . The unit of SSA should be m2 /g. How does SSA of the clay grain compare to that of the sand particle calculated in the slide set

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.