Question 34Steam Plants - QMED70% to pass
Which statement is true concerning two-stage air ejector assemblies?
AI Explanation
The correct answer is A) The steam/air mixture from the main condenser is discharged by the first stage air ejector to the inter condenser.
In a two-stage air ejector assembly, the first stage takes suction on the main condenser and discharges the steam/air mixture to the inter condenser. This allows the second stage air ejector to then take suction on the inter condenser and further evacuate the system, creating a higher vacuum.
The other options are incorrect because: B) The steam to the after condenser is not returned to the main condenser, C) The air is removed from the condenser, not the condensate, and D) The first stage does not take suction on the second stage - they operate in series to increase the overall vacuum.
Related Questions
#32 Which of the following labeled items of the illustrated section of boiler refractory represents the insulating block? Illustration GS-0003 #33 The cooling water flow from an air ejector inter condenser and after condenser is discharged directly into the _______________.#35 Air accumulated in the inter condenser of the air ejector assembly is discharged directly to the _______________.#36 While vacuum is being raised on the main unit and the turbine warmed, condensate is recirculated to the main condenser to _______________.#37 According to the illustrated lubricating oil system diagram, which of the labeled items is the lube oil sludge tank? Illustration SE-0011