Minimum porosity for fluidisation is____________________?
Correct answer: A. The porosity of the bed when true fluidisation begins
- A. The porosity of the bed when true fluidisation begins
- B. That corresponding to completely fluidised bed
- C. That corresponding to static bed
- D. Less than that of the' static bed
Explanation
The minimum fluidisation porosity is the bed voidage at the instant fluidisation begins, when the upward fluid force just supports the bed weight. It is greater than the porosity of the undisturbed static bed.
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