Boiler
1. A boiler is an energy conversion or transfer system where chemical energy from fuel is converted into either heat or electrical energy.
2. A boiler is a closed vessel in which fluid (generally water) is heated.
A boiler consists of a tank or a closed vessel in which liquid is stored and heated using hot gases generated from the combustion of fuels such as coal, fuel oil or natural gas that burn in a furnace, or from electrical coils.
There are two main categories of boilers, and each can further be subdivided to several types:
• Fire-tube boiler – Hot gas in several tubes is used to heat the surrounding water.
• Water-tube boiler – Water in the tubes is heated by the surrounding hot gas.
Boilers are widely used in domestic and industrial applications such as:
• Thermal power plants
• Industrial processes
• Heating
• Sanitation
• Sterilizing equipment.
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