Hot air drying is the most commonly employed commercial technique for drying vegetables and fruits, in
which heat is transferred from the hot air to the product by convection, and evaporated water is
transported to the air also by convection.
In an existing food drying plant, which currently uses hot air drying, hot air is generated by circulating air
through electric heating elements. However, the plant management is planning to install a steam boiler to
supply the steam for the heating process and you have been hired as a mechanical engineer to design
this system.
Task 1
As a first step in the design the boiler system, discuss the operation of industrial boiler system with
schematics diagram including key components.
