Question 177Motor Plants - 1st Asst/Chief70% to pass
Which of the following statements describes how the fuel oil enters the whirling chambers of the sprayer plates used in a auxiliary boiler return flow fuel oil system?
AI Explanation
The correct answer is C) Through tangential slots in the sprayer plate.
In a typical auxiliary boiler return flow fuel oil system, the fuel oil enters the whirling chambers of the sprayer plates through tangential slots in the sprayer plate. This tangential entry creates a swirling motion that helps atomize the fuel oil as it is sprayed into the boiler combustion chamber. The swirling action provided by the tangential slots is a key design feature that improves the combustion efficiency of the auxiliary boiler.
The other answer choices are incorrect because: A) the fuel oil does not enter through the outer barrel tube, B) the fuel oil does not enter through drilled passages in the sprayer plate, and D) the fuel oil does not enter through baffles in the orifice plate. The tangential slots in the sprayer plate are the correct path for the fuel oil to enter the whirling chambers.
Related Questions
#175 The gage glass on a coil-type auxiliary boiler is connected to the_______________.#176 A variable capacity, pressure atomizing, fuel oil burner functions to_______________.#178 When the steam pressure drops below a set value on an automatically fired auxiliary boiler, fitted with rotary cup atomizers, the combustion control system will_______________.#179 Control of the fuel oil metering valve in an automatically fired auxiliary boiler is accomplished by a _______________.#180 The solenoid valves in the fuel oil supply line to an automatically fired auxiliary boiler, are automatically closed by _______________.