What section of the boiler is where the burners are located and where radiant heat transfer occurs?
A) Firebox
B) Burners
C) Air registers
D) Stack
Answer: A
Explanation: A) Correct. The firebox is the section of the boiler where the burners are located and where radiant heat transfer occurs.
B) Incorrect. Burners are devices used to mix and burn an air/fuel mixture in the firebox section.
C) Incorrect. Air registers control the flow of air to the firebox section of a boiler.
D) Incorrect. The stack is located at the outlet of the boiler, which removes flue gas from the boiler.
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