SC Boiler Installation Practice Questions - South Carolina Boiler Installation Contractor Examination Exam

In a firetube heating boiler, where do the hot combustion gases travel relative to the boiler water?

Through tubes that are surrounded by boiler water Through water-filled tubes that are surrounded by hot gases Only across an external plate heat exchanger Directly through the steam drum without contacting heating surface

Correct Answer:

Through tubes that are surrounded by boiler water

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