Steam flows through a well-insulated throttling valve. the upstream (inlet) conditions are 500°f and 300 psia, and the downstream (outlet) pressure is 5 psia. (a) what is the downstream temperature (°c) of the stream? (b) for the same temperature and pressure conditions as stated above, if the flowing fluid was air (which you may assume is an ideal gas with cp-1.055 kj/kg"c), what would be the downstream temperature (°c)?

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)