water circulation in boiler, how to supply water and recirculating water in boiler, The primary purpose of a steam-generating boiler is to make steam to generate electricity. Super-heated steam comes from a boiler to a turbine and turns the turbine blades to create electricity. How water enters and leaves a boiler is called the boiler and steam circulatory system. The pipes and tubes that make up these circulatory systems have many parts.
For a boiler to make steam continuously, it must have water circulating through its tubes. Boilers use thermal circulation, in which water is exposed to heat and begins to turn into a water/steam mixture. Since a combination of water and steam is less dense than water, gravity will cause the water to move down and the steam/water mixture to rise.
All steam-generating boilers have the same systems described below. For this article, a radiant power pulverized coal-fired boiler is our example.
A radiant power pulverized coal-fired boiler is divided into three areas:
furnace area, where the heat source is located
super-heater area, where super-heated steam is made
convection pass or heat recovery area, where the economizer is located.
Within these areas, the combination of water/steam circulates throughout the boiler. a typical radiant boiler circulatory system.
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