Question 207Steam Plants - 1st Asst/Chief
70% to passA lower than normal boiler stack gas temperature usually indicates _______________.
Aincomplete combustion
Bdirty watersides
Cdirty firesides
Dfuel high sulfur content
AI Explanation
You are correct, the answer is A) incomplete combustion. A lower than normal boiler stack gas temperature usually indicates incomplete combustion, which means the fuel is not burning fully or efficiently. This results in unburnt fuel particles in the exhaust gases, leading to a lower stack temperature compared to normal operating conditions. The other options are incorrect because: B) Dirty watersides would affect heat transfer, not stack temperature. C) Dirty firesides would restrict airflow, leading to higher stack temperatures. D) Fuel with high sulfur content does not directly affect stack gas temperature.
Related Questions
Q195:In a water-tube boiler, waterside scale formation is caused by _______________. Q359:While a vessel is underway the low-pressure turbine high-speed pinion is damaged... Q89:Coast Guard Regulations Q180:Condensate pumps have distinctly noticeable characteristics and can usually be ... Q208:The major heat loss in an oil fired boiler is the heat _______________.
Ready to test your knowledge?
Take a Steam Plants - 1st Asst/Chief Practice ExamOfficial Resources