Ahigh pressure syringe pump apparatus, 2 in diameter and 2 ft tall, is full of r-134a vapor at 300°f. the piston is connected to a gear train and applies a force of 2330 lbf directly onto the fluid. the refrigerant is allowed to cool down at constant pressure until the quality reaches 25%. find the final temperature (°f) and work (in btu). the atmospheric pressure is 14.6 psi.

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)