Process hot air is used for drying, heating and evaporating purposes. Hot air can be generated by using flue gas, or by burning fuels like coal or natural gas. Electric hot air generators are great alternative to fuel based hot air generators due to flue gas emissions.

The cold air is fed to the hot air generator by using forced draft fan of suitable capacity. The cold air absorbs the heat from suitable source and leaves the generator through the outlet nozzle. The system is fully automatic with a temperature controlling device. The whole equipment is fixed on common base frame.