File talk:Locomotive fire tube boiler schematic.png

fire tube boiler are those boiler in which fire inside the tube water out side the tube. IT can work at low pressure. 10 to 40 bar. x^2+y^2+2xy=0                               <(a^2+b^2+2ab)

water tube boiler
those boiler in which water inside the tube and water out side the tube. These boiler are work on high pressure 100 to 360 bar. these boiler are better than fire tube boiler —Preceding unsigned comment added by 121.247.206.205 (talk) 15:40, 6 September 2008 (UTC)