Question

1. Wheat having 15.5% moisture have to be

dried to 4% moisture before storing in grain

silos. How many tons of fresh wheat must

be dried to fill a 200-ton silo?

2. A drying equipment is capable of removing

500 kg/hr of moisture from grains. What

will be the a) feed and b) product rates in

tons/hr - if the grains enter with 20%

moisture and leaves with 9% H2O db?

3. Salt cake with 89.4% salt is fed at a rate of 180 kg per

hour in a dryer. The outcome is totally dried salt.

Determine the weight of water removed and the weight of

the dried salt collected in one day of 8 hours operation.

4. Salt cake with 89.4% salt is fed at a rate of 180 kg per

hour in a dryer. The outcome is dry salt with 5%

moisture. Determine the weight of water removed and the

weight of the dried salt collected in one day of 8 hours

operation.

5. Raisins with 28% moisture content are fed in a dryer at a

rate of 1500 kg per hour. What should be the drying rate

in kg water removed per hour if the product should have

16% moisture? How many tons of the product can be

produced per day? (Assume 24 hours operation per day

6. Wet salt crystals are introduced in a drying process whose

moisture removal is 100 kg per hour. The resulting

product is dry salt with 5% moisture dry basis. If the

product rate is 90% that of the feed rate, what is the

percentage moisture content wet basis of the feed? How

many tons of products would be realized in 24 hours

continuous operation?

Answer 1