Differentiate water tube boiler and fire tube boilers

Differentiate water tube boiler and fire tube boilers
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1 Answer

Answer :

Sr. No.
Parameter
Water tube boiler
Fire tube boiler
1 Medium in tube 
Water is circulated in tube and hot gases passed over the tube
Hot gases are circulated through the tube and water flows over tube. 
2 Steam Formation Rate
Steam formation rate is high
Steam formation rate is low
3 Steam Pressure
It can generate steam at higher pressure more than 25 bar
Generate steam at lower pressure up to 25 bar
4 Operating cost
Operating cost high
Operating cost low
5 Overall efficiency
Overall efficiency high
Overall efficiency low
6 Cleaning and Inspection
Cleaning and Inspection is easy
Cleaning and Inspection is difficult 
7 Application
High power Generation
Low to medium power generation
8 Example
Babcock & Wilcox boiler, Loeffler Boiler
Cochran Boiler, Lancashire boiler
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