For flow of fluids through packed bed, the superficial velocity is_________________?
Correct answer: D. Less than the average velocity through channels
- A. Same as the average velocity through channels
- B. More than the average velocity through channels
- C. Dependent on the pressure drop across the bed
- D. Less than the average velocity through channels
Explanation
Superficial velocity is calculated using the total bed cross-sectional area, whereas channel velocity uses only the void area. Since the total area is larger, superficial velocity is lower than the average channel velocity.
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