For which one of the following situations would Kendall’s tau be appropriate? a) The Mohs scale rates the hardness of minerals. If one mineral can scratch another, it is judged….
Predict the time needed if the depth of material is increased to 44.5 mm.
Prediction in Constant-Rate Drying Region. A granular insoluble solid material wet with water is being dried in the constant-rate period in a pan 0.61 m × 0.61 m and the depth of material is 25.4 mm. The sides and bottom are insulated. Air flows parallel to the top drying surface at a velocity of 3.05 m/s and has a dry bulb temperature of 60°C and wet bulb temperature of 29.4°C. The pan contains 11.34 kg of dry solid having a free moisture content of 0.35 kg H2O/kg dry solid, and the material is to be dried in the constantrate period to 0.22 H2O/kg dry solid.
a. Predict the drying rate and the time in hours needed.
b. Predict the time needed if the depth of material is increased to 44.5 mm.