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Author Question: What is a multiple vacuum? What will be an ideal response? ... (Read 38 times)

acc299

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What is a multiple vacuum?
 
  What will be an ideal response?

Question 2

How can the centrifugal compressor speed be higher than the motor speed?
 
  What will be an ideal response?



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Joy Chen

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Answer to Question 1

Multiple evacuation is several short vacuums in succession that are broken in between with dry nitrogen. The nitrogen absorbs and/or dislodges moisture in the system, making it easier to remove on subsequent evacuations.

Answer to Question 2

This is accomplished by using speed increasing gears.



acc299

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Joy Chen

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