Question 64Steam Plants - 1st Asst/Chief
70% to passWhich of the following statements concerning fire-tube boilers is correct?
ACombustion gases flow through the tubes.
BFlames impinge on the tubes.
CCombustion occurs in the tubes.
DWater flows through the tubes.
AI Explanation
The correct statement concerning fire-tube boilers is A) Combustion gases flow through the tubes. In a fire-tube boiler, the hot combustion gases from the furnace or firebox pass through the tubes, transferring heat to the water surrounding the tubes. This heated water then generates steam for the boiler's intended purpose. The other options are incorrect - B) Flames do not impinge on the tubes, C) Combustion occurs in the furnace or firebox, not inside the tubes, and D) Water flows around the outside of the tubes, not through them.
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