Question 57Steam Plants - Assistant Engineer70% to pass
How is boiler water forced to circulate faster in accelerated natural circulation boilers as compared to free natural circulation boilers?
AI Explanation
The correct answer is B) Increasing the inclined angle of the generating tubes.
In accelerated natural circulation boilers, the inclined angle of the generating tubes is increased compared to free natural circulation boilers. This increased angle enhances the natural convection effect, creating a stronger driving force that circulates the boiler water more rapidly. The steeper angle promotes faster movement of the heated water up the tubes, leading to improved circulation and heat transfer within the boiler system. The other options, such as increasing water density or economizer surface area, do not directly address the mechanism of accelerated natural circulation.
Related Questions
#55 The boiler water gage glasses should be blown down _______________.#56 You are standing watch in the engine room of a steam vessel. You should blow down a gage glass periodically to _______________.#58 Circulation of water and the steam/water mixture within a natural circulation boiler is retarded by _______________.#59 Arrow "B" shown in the illustration indicates the _. Illustration SG-0008 #60 Overheating of the generating tubes will occur when a boiler reaches its end point of _______________.