Steam boilers are used particularly in industrial processes. The steam is used for example for drying, heating, etc., of a product.
A steam boiler is a closed heated container, which serves to produce water vapour of higher than atmospheric pressure or hot water with temperatures above 100 °C for heating and operational purposes.
If the steam boiler is used for generating steam, then the term ‘steam generator’ is used. Depending on the use of the steam, either saturated or superheated steam is generated in a steam boiler.