Q2. For a laminar flow through a 4 cm-diameter horizontal pipe transporting liquid with p = 1350 kg/m' and u=0.75 N. s/m², the wall shear stress is 320 N/m². Then:
A. The pressure gradient within the pipe is
B.
The average & maximum velocities in the pipe are: and
C. The Reynolds number is.
4cm diam pipe
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Liquid flows at steady state at a rate of 2 lb/'s through a pump, which operates to raise the elevation of the liquid 100 ft from control volume inlet to exit. the liquid specific enthalpy at the inlet is 40.09 btu/lb and at the exit is 40.94 btub. the pump requires 3 btu/s of power to operate. if kinetic energy effects are negligible and gravitational acceleration is 32.174 tt/s, the heat transfer rate associated with this steady state process is most closely 1)-2,02 btu/s from the liquid to the surroundings 2)-3.98 btu/s from the surroundings to the liquid. 3)-4.96 btu/s from the surroundings to the liquid. 4)-1.04 btu/s from the liquid to the surroundings.