UFC 3-240-13FN
25 May 2005
Figure 3-1. Fire Tube Boiler
3-1.1.3
Water Tube Boilers.
Water tube boilers pass water through the boiler
tubes, with the fire and hot combustion gases contacting the exterior of the tubes (see
Figure 3-2). Water tube boilers are used in high-pressure and very-high-pressure
applications. Most military installations have a central boiler plant containing water tube
boilers in addition to fire tube boilers that are located in, and serve, individual buildings.
Figure 3-2. Water Tube Boiler
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