Umf is the minimum fluidisation velocity for a bed of particles. An increase in the superficial gas velocity from 2 Umf to 2.5 Umf results in (all velocities are smaller than the entrainment velocity of the particles) no change in the_______________?
Correct answer: C
Explanation
As long as the gas velocity is below the entrainment velocity, increasing it slightly will not change the average bed height.