A packed bed solid particles of dentity 2500 kg/m3, ocouples a deither of 1m in a vessel of cross sectional area 0,04 m2. The mass of solids in the bed of solids is 50 kg and effective diameter of the particles is 1mm. A liquid of density 800 kg/m3 and viscosity 0.002 Pas flows uparts though the bed, which is restrained at its upper surface. Determine:

1. The voidage(volume freaction occupied by voids) of the bed
2. The preassure drope across the bed when the volume flow rate of linside is 1.44m3/h, use both Ergun and carman-kozeny equations and recommended the appreciate solution.