What is Water-tube boiler?
[[File:Water tube boiler-en.svg|thumb|Diagram of a water-tube boiler]] [[File:Fire tube boiler from Bangladesh.jpg|thumb|Water-rube boiler from [[Bangladesh]]]] A '''water-tube boiler''' is a type of [[boiler]] in which water circulates in tubes heated by fire from outside. The fire is produced by the [[fuel]] being burned inside the [[furnace]] for the boiler. ==Design types== * Babcock and Wilcox boiler * A/D/M/O-type boiler * Flex-tube boiler * Forced-circulation boiler * Low water content * Stirling boiler * Thornycroft * White-Forster * Yarrow boiler ==Use== * Marine * Railway * Stationary {{sci-stub}} [[Category:Boilers]]