The Characteristic of Water Tube Boiler
A water tube boiler is such kind of boiler where the water is heated inside tubes and the hot gasses surround them. This is the basic definition of water tube boiler. Actually this boiler is just opposite of fire tube boiler where hot gasses are passed through tubes which are surrounded by water.
Characteristics
1. The furnace placed outside the cylinder, "furnace" is not restricted by "boiler", the volume can be large or small, to meet the combustion and requirements that increase the amount of evaporation.
2. To accommodate the water vapor tube placed in the furnace, the flue as the main heating surface, the boiler barrel is generally not heated. Heat transfer performance and safety performance are significantly improved.
3. Water preheating, vaporization (boiling) and steam overheating in different heating surface to complete.
4. Combustion system and auxiliary system is more complex, but the structure of pressure parts is relatively simple.
5. Due to the water preheating, vaporization and steam are done in the tube, thus, higher requirements on water quality. Higher levels of the operation management.
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