Question 171Motor Plants - 1st Asst/Chief70% to pass
Which of the following statements concerning fire-tube boilers is correct?
AI Explanation
The correct answer is C) Combustion gases flow through the tubes.
In a fire-tube boiler, the hot combustion gases from the furnace flow through the tubes, while the water surrounds the outside of the tubes. This allows the heat from the combustion gases to be transferred to the water, generating steam.
The other options are incorrect because: A) The flames do not directly impinge on the tubes, they heat the combustion gases that flow through the tubes. B) The water does not flow through the tubes, it surrounds them. D) Combustion occurs in the furnace, not inside the tubes.
Related Questions
#169 Which of the listed problems will happen when the water level of a fire-tube type auxiliary boiler approaches the crown sheet? #170 Downcomers installed on auxiliary package boilers are protected from direct contact with hot gases by _______________.#172 Which of the automatic boiler controls listed should be tested prior to lighting off an auxiliary boiler? #173 Why should the main steam stop valve of an auxiliary boiler be eased off its seat and then gently closed before lighting off? #174 The boiler shown in the illustration would be classed as MO-0064