What can you say about a water tube boiler's efficiency when compared to a fire tube boiler with equal features?
What can you say about a water tube boiler's efficiency when compared to a fire tube boiler with equal features? Correct Answer Water tube has higher efficiency than fire tube
Explanation:
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Fire-Tube Boiler |
Water-Tube Boiler |
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In this boiler, the hot flue gases are present inside the tubes and water surrounds them |
In this boiler, the water is present inside the tubes and the hot flue gases surround them |
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They are low-pressure boilers. The operating pressure is about 25 bar |
They are high-pressure boilers and the operating pressure is about 250 bar |
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The rate of steam generation and quality of steam is very low, therefore, not suitable for high power generation |
The rate of steam generation and quality of steam is better and suitable for power generation |
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It requires more floor area for a given output |
It requires less floor area for a given output |
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The overall efficiency of this boiler is up to 75% |
The overall efficiency is up to 90% with the economizer |
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Water doesn’t circulate in a definite direction |
Water circulates in a well-defined direction |
