Question 120Steam Plants - Assistant Engineer70% to pass
After routine blowing of tubes at sea, there should be a decrease in the _______________.
AI Explanation
The correct answer is D) stack temperature.
After routine blowing of tubes on a ship, the stack temperature should decrease. Blowing of tubes helps remove soot and scale buildup inside the boiler tubes, which can improve heat transfer and combustion efficiency. This reduction in insulation and improved airflow through the boiler results in a lower exhaust or stack temperature.
The other answer choices are incorrect because:
A) CO2 in the stack gas would not necessarily decrease after tube blowing.
B) Fuel oil temperature is not directly affected by tube blowing.
C) Excess air required for combustion is also not impacted by tube blowing.
Related Questions
#118 Which of the pumps listed takes fuel oil suction from the double bottom tanks and discharges it to the settling tanks? #119 Before blowing tubes in a boiler equipped with steam soot blowers, you should _______________.#121 To avoid acid corrosion of the economizer tubes when blowing tubes _______________.#122 Before using a boiler compressed air soot blower system, you should _______________.#123 In most marine boilers, the primary reason the first few rows of generating tubes, called screen or furnace row tubes, are made larger in diameter than the rest of the generating tubes is because _______________.