Air Ejector Components Quiz
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Air Ejector Components Quiz

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@ManeuverablePolarBear

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Questions and Answers

Where should the vacuum retaining valve be installed to prevent the return of air to the condenser?

  • Before the second stage
  • Before the first stage
  • Before the third stage (correct)
  • At the exit of the third stage

    • What happens to the steam that condenses in the first and second stages of the air ejector?

  • It is compressed by the air ejector
  • It is sent to the drain cooler
  • It is reintroduced to the feed water system
  • It is returned to the condenser (correct)

    • Why are each subsequent stage of the air ejector generally smaller in size?

  • To maintain pressure as steam condenses (correct)
  • To allow for more cooling tubes
  • To increase the volume of air and steam
  • To decrease pressure at each stage

    • What material are the diffusers made of in the air ejector?

    <p>Industrial bronze</p> Signup and view all the answers

    What is the relief valve in the air ejector made of?

    <p>Stainless steel blade reeds on a Monel seat</p> Signup and view all the answers

    What are the components of an air ejector in a modern steam installation?

    <p>The diffuser, air and vapour suction, steam nozzle, operating steam supply, steam strainer, inter-cooler</p> Signup and view all the answers

    How is air removed from the air ejector using steam?

    <p>Air enters the air ejector and is carried away by the steam</p> Signup and view all the answers

    What is the optimal rate of compression to achieve the best resulting vacuum in the condenser?

    <p>8:1</p> Signup and view all the answers

    Why are most air ejector installations fitted with steam filters on the air ejector feed line?

    <p>To prevent clogging of the nozzle and maintain proper velocity of the steam to the diffuser</p> Signup and view all the answers

    What vacuum level is typically desired in the condenser for optimal operation?

    <p>$28-29$&quot; of Hg</p> Signup and view all the answers

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