Suppose that 280.5 bbl/day of 23 api, 1.05 cp oil is being produced through 2 7/8-in., 8.6-lbm/ft tubing in a well that is vertical. if the tubing wall relative roughness is 0.001, calculate the pressure drop over 2000 ft of tubing.

Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.

Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.

How to increase the thermal officiency of an ideal simple rankino cycle? among these methods, which one is the best and why?