10 Questions
Where should the vacuum retaining valve be installed to prevent the return of air to the condenser?
Before the third stage
What happens to the steam that condenses in the first and second stages of the air ejector?
It is returned to the condenser
Why are each subsequent stage of the air ejector generally smaller in size?
To maintain pressure as steam condenses
What material are the diffusers made of in the air ejector?
Industrial bronze
What is the relief valve in the air ejector made of?
Stainless steel blade reeds on a Monel seat
What are the components of an air ejector in a modern steam installation?
The diffuser, air and vapour suction, steam nozzle, operating steam supply, steam strainer, inter-cooler
How is air removed from the air ejector using steam?
Air enters the air ejector and is carried away by the steam
What is the optimal rate of compression to achieve the best resulting vacuum in the condenser?
8:1
Why are most air ejector installations fitted with steam filters on the air ejector feed line?
To prevent clogging of the nozzle and maintain proper velocity of the steam to the diffuser
What vacuum level is typically desired in the condenser for optimal operation?
$28-29$" of Hg
Test your knowledge on the components of an air ejector used in steam installations to remove air and other gases from condenser feed water. Learn about the diffuser, air and vapor suction, steam nozzle, operating steam supply, steam strainer, and inter-cooler required for the device's successful operation.
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