Saturated air leaving the cooling section of an air-conditioning system at 14°c at a rate of 50 m3 /min is mixed adiabatically with the outside air at 32°c and 60% relative humidity at a rate of 20 m3 /min. assuming that the mixing process occurs at a pressure of 1 atm, use psychrometric chart to determine the specific humidity, the relative humidity, the dry-bulb temperature, and the volume flow rate of the mixture. analysis

Amixture of slurry and mud is to be pumped through a horizontal pipe of diameter 500 mm. the fluid behaves as a bingham plastic with a yield stress of 30 pa and viscosity 0.04 pa.s. describe the effects of the shear stress through a transverse section of the pipe by plotting the variation in shear stress and velocity profile: (i) just before the slurry starts to move (ii) as the slurry flows when the pressure gradient is double that in part (i)