Talk:Rotary screw compressor

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Screw compressor For more info on screw compressors go to —Preceding unsigned comment added by (talk) 23:35, 5 November 2007 (UTC)


Diagram or photo needed. — Preceding unsigned comment added by Ericg33 (talkcontribs) 07:03, 9 January 2011 (UTC)

proposed merge of Twin-screw type supercharger[edit]

As far as I can tell, Twin-screw type supercharger is just a specific application of a rotary screw compressor. Parts of that article actually seem to describe a rotary screw compressor better than this article manages. I understand that these are technically two different subjects, but I believe they can be fully covered in a single article. Thoughts? -Verdatum (talk) 17:53, 21 August 2008 (UTC)

I would tend to agree with your assessment. As an engineer at a leading manufacturer of rotary screw compressors this page leaves a lot to be desired. I will see if I can make some improvements if I have time comment added by Dubsed (talkcontribs) 19:25, 8 September 2008 (UTC)

I agree. Superchargers are an application and not a distinct product. A few years ago I compiled a Technical section to our website at Various compressors and histories are discussed in this section. It might assist with the development of the compressor category in Wikipedia. Fitzsimmonds - 10th Nov 2008. —Preceding unsigned comment added by (talk) 09:14, 10 November 2008 (UTC)

While the twin-screw supercharger is a distinct product from a rotary screw compressor in the marketplace, they fundamentally constitute the same underlying product. Merging Twin-screw type supercharger into this article but possibly moving some of the contents into supercharger instead of here appears logical. (talk) 03:32, 21 August 2009 (UTC)

The section that describes variable displacement air compressors shows "Ingersoll Rand" in the first paragraph as a typical type of rotary screw air compressor; as a former employee, i can tell you that Ingersoll Rand does not use variable displacement compressors. Quincy is a very good example of a variable displacement compressor, it utilizes lift valves to lengthen and shorten the airend capacity and does it very efficiently. Eweesjes (talk) 14:15, 16 April 2010 (UTC)eweesjes

"internal compression "[edit]

I can't make any sense of this "comparative advantage". David R. Ingham (talk) 05:39, 13 December 2010 (UTC)

Cyclical stressing advantage?[edit]

It appears a rotary screw may have less or no cyclical stressing compared to a piston compressor, because the compression action is continuous along the length of the screw, rather than as surging that only occurs on the compression stroke of a piston.

This seems to suggest to me that it may be easier to built rotary screw compressors using materials more sensitive to cyclical stressing, and less uneven wear of the drive system. DMahalko (talk) 23:09, 19 November 2011 (UTC)

Use as a compressed-air motor?[edit]

Do these freely spin backwards if compressed air is applied to the "outlet"?

If so then it may be useful as a low-loss drive motor for compressed air energy storage, possibly being more energy efficient than other types of compressed air driven motors such as turbines, which freely "leak" supply air if the supply pressure is too low to overcome the load force. DMahalko (talk) 23:15, 19 November 2011 (UTC)

No. Andy Dingley (talk) 23:22, 19 November 2011 (UTC)