Optimum economic pipe diameter for fluid flow is determined by the____________________?
Correct answer: C. Total cost considerations (pumping cost plus fixed cost of the pipe)
- A. Viscosity of the fluid
- B. Density of the fluid
- C. Total cost considerations (pumping cost plus fixed cost of the pipe)
- D. None of these
Explanation
The economic diameter balances the annual pumping cost against the fixed cost of installing the pipe. A larger pipe lowers friction and pumping cost but increases purchase and installation cost, so fluid properties alone cannot determine the optimum.
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