Define Drying .What are different factors affecting to the rate of drying?

Define Drying .What are different factors affecting to the rate of drying?
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1 Answer

Answer :

Definition: Final removal of liquid from the solid with the help of heat is called drying.

Factor affecting the rate of drying:

Following factor can affect the rate of drying:

1) Surface area of material: increase in surface area leads to increase in rate of drying.

2) Rate of heat transfer by increasing airflow, temperature gradient.

3) Moisture content of the material: time taken for drying will be more if the moisture content is more.

4) Time and temperature: High temperature with less time drying will takes place without degrading the material.

5) Difference in humidity (Hs-Hg) between surface layer and atmospheric: if difference is more rate of drying will be fast.
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