Pressure drop due to pipe fittings can be estimated by the equation, $$\frac{{\Delta {\text{p}}}}{\rho } = 4{\text{f}}.\frac{{{{\text{L}}_{\text{e}}}}}{{\text{D}}}.\frac{{{{\text{V}}^2}}}{{2{\text{gc}}}},$$ where, Le = equivalent length of straight pipeline which will incur the same frictional loss as the fitting and D = diameter of the fitting. The value of $$\frac{{{{\text{L}}_{\text{e}}}}}{{\text{D}}}$$ (dimensionless) for 45° elbow and 180° close return bends would be respectively around
A. 5 and 10
B. 45 and 75
C. 180 and 300
D. 300 and 500
Answer: Option B
Related Questions on Process Equipment and Plant Design
Width and depth of grooves in the tube sheet holes normally are __________ inch respectively.
A. $$\frac{1}{8}$$ and $$\frac{1}{{64}}$$
B. $$\frac{1}{{64}}$$ and $$\frac{1}{8}$$
C. $$\frac{1}{2}$$ and 8
D. $$\frac{1}{2}$$ and 5
A. Less than
B. 1.25-1.50 times
C. 2.5 times
D. One-fourth of
Value of Peclet number = 0, is the representative of
A. Laminar flow
B. Complete back mixing
C. Plug flow
D. Eddy diffusivity = 0
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