A gas is pumped in a packed bed as shown in Figure 1. The bed is packed with solid particles and the shape of a single particle is shown in Figure 2. Given the following data: (Total 19 points) D = 38 cm, h = 57 cm, a = 11 mm, b = 17 mm, gas density and viscosity are 1.1 kg/m2 and 4x10-5 kg/m.s respectively. Answer the following questions: (Please note the figures are not drawn to scale) Find the effective particle diameter. (4 points) b. If the number of particles in the bed is 12500, calculate the void fraction in the bed (4 points) If the volumetric flow rate is 0.2 m3s, determine if the flow is laminar or turbulent and state your reason(5 points) . If the density of the solid particles is 1200 kg m, the minimum fluidization length is the same as the height of the bed and the porosity at minimum fluidization is the same as the void fraction, find the pressure drop at minimum fluidization condition (3 points) What is the power of the pump required to maintain the pressure drop in part (dy? Comment on your answer. (3 points) D Solid Particles