Water tube boiler:
The boiler in which the water is present inside the tubes and fire or hot gases surrounds these fire tubes.
The examples of water tube boilers are a La-Mont boiler, Benson boiler, Stirling boiler, Babcock and Wilcox boiler, Yarrow boiler and Loeffler boiler.
Advantage:
SL NO | Advantage |
1. | The maximum working pressure of the water tube boiler is 250 bar. |
2. | Overall efficiency is up to 90% with an economizer. |
3. | It requires less floor area for a given output. |
4. | Load fluctuation can be easily handed. |
5. | The rate of steam generation and the quality of steam for suitable power generation are much better. |
6. | This can be used in large power plants. |
7. | The direction of water circulation is well defined. |
Disadvantage:
SL NO | Disadvantage |
1. | Complex design and High maintenance cost. |
2. | A skilled operator is required for operation. |
3. | This is used in large power plants and it is uneconomical for use in small industries. |
4. | For the same power output, the cost of a water tube boiler is high. |
5. | Treatment of feed water is very essential in a water tube boiler as small-scale deposits inside the tube can cause overheating and bursting. |
Application:
Water-tube boilers are widely used in industries
Such as sugar mill, |
The chemical industry, |
The paper mill, a textile factory, |
Central heating enterprise, |
A power plant, and so on. |
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