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Thread: Volume Index
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01-02-2023, 06:09 AM #1
Volume Index
Good day
i want to be cleared the concept of Vi of screw compressors. some compressor have fixed and variable VI.
And they have calculated figures like 2.6 3.6
Some typical screw compressor Vi ratings are 2.6, 3.6 and 5.0. A low Vi (2.6) typically is used on booster applications while a high Vi (5.0) is used on high- or single-stage applications.
this calculation on which parameters reference calculated ?
Thank you all
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01-02-2023, 07:34 AM #2
Re: Volume Index
Shaaf,
Some information links
https://nextcomp.ca/wp-content/uploa...er-Digital.pdf
https://mayekawa.com.au/494/wp-conte...Compressor.pdfLast edited by RANGER1; 01-02-2023 at 07:38 AM.
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02-02-2023, 03:51 PM #3
Re: Volume Index
Shaaf,
Just to simplify & follow up what you said. Nh3 on Mycom screw in general.
Vi 5.8 single stage -33/35 deg C
Vi 2.6 booster -33/-10
Vi 3.6 booster -40/-10
Vi 2.6 -10/35
If machine 2.6 or 3.6 you would not notice much from my experience (Mycom).
Bigger differential across machine, higher ViLast edited by RANGER1; 02-02-2023 at 04:03 PM.
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04-02-2023, 04:13 PM #4
Re: Volume Index
Dear Ranger1
Thank you so much for your couple of replies. I'm grateful for this.