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Thread: Vi rule
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15-02-2009, 07:48 AM #1
Vi rule
Hi,
I have question about Vi in screw compressor.
I want to know why discharge temperature increase if i use a compressor with higher Vi
Thanks
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15-02-2009, 01:31 PM #2
Re: Vi rule
VI is a subject that needs a bit of study to understand.
Overcompression or Undercompression occurs when the VI is not correct.
I would suggest that you read this article. I refer to it often.
http://www.petroassist.com/Tech%20Kn...ompressors.pdf
Thank you Mr. Pillis (The author of the article)
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16-02-2009, 05:00 PM #3
Re: Vi rule
NH3LVR Thanks for the link C.D.
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16-02-2009, 06:35 PM #4
Re: Vi rule
If the volume ratio number (the number associated with the Vi) is higher than the optimum Vi, the compressor is over-compressing the gas. This causes the higher discharge temperature.
If all else fails, ask for help.
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16-02-2009, 08:49 PM #5
Re: Vi rule
Like US Iceman said...more compression pushes the discharge temperature up. Look at the Idael Gas Laws.
Ken
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17-02-2009, 06:36 AM #6
Re: Vi rule
Hi members
thanks for your complete answers.
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