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Distinguish between fire tube and water tube boilers in steam power plant.

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Fire Tube boiler
Water Tube boiler
In fire tube boilers hot gases are passed through the tubes and water surrounds these tubes.
In these boilers water is inside the tubes and hot gases are outside the tubes. 
Steam at low pressure and low temperature is generated.
Steam at high pressure and high temperature is generated.
Rate of steam generation for per hour is less. 
Rate of steam generation for per hour is more. 
Steaming time is very more.
Steaming time is very less.
The output of the boiler is not high. 
The output of the boiler is high.
Low efficiency. 
High efficiency.
Less control on temperature of steam.
Better control on temperature of steam.
Not respond quickly to change in steam demand.
Respond quickly to change in steam demand.
Its weight is more.
Its weight is less.
Less risk of explosion due to low pressure.
Risk of explosion is more due to high pressure.

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