[labnetwork] Cleanroom CDA system compressors

[Collins, Deon]

The choice really depends on you air requirements. We at Hmntl have two separate compressed air systems. Our 16 cleanrooms and facility use the standard CDA from a 100hp Sullair VSD rotary screw compressor. With this unit we have an external 600cfm dryer as well as a large demister to catch any oil that might escape the air compressor. If you have high air requirements this may be your best option. The cheap recip or rotary on tank systems are energy hogs and I personally would get a variable speed unit with some type of ROI for energy.

Our BIO lab and a few other delicate labs needing better quality air(medical grade) use a multistage scroll unit. Its initial stage is a 5hp unit that maxes out at 25-30 hp. It is relatively small unit but very efficient. If I had a low
Cfm requirement I would stick with a scroll system with multiple stage. The beauty of this system being if you lost a stage the next unit will step in and take over with out an outage.
These units are also very efficient.

Deon D. Collins


Director of Facilities
The Grainger College Of Engineering UIUC
Holonyak Micro & Nanotechnology Lab
208 N Wright St Rm. 1114 | MC-249
Urbana, IL 61801
217-300-7531 | deonc69 at illinois.edu<mailto:deonc69 at illinois.edu>


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From: labnetwork <labnetwork-bounces at mtl.mit.edu> On Behalf Of Michael Call
Sent: Friday, April 5, 2024 10:03 AM
To: Lab Network (labnetwork at mtl.mit.edu) <labnetwork at mtl.mit.edu>
Subject: [labnetwork] Cleanroom CDA system compressors

We're in need of replacing our current scroll type compressors for our CDA system.  A vendor is trying to sell us on an oil-flooded compressor with appropriate filters for our cleanroom CDA requirements.  I would just like to see if anyone else has a system like this and has anyone had issues with them.  I believe oilless is the way to go, but would like to hear others opinions.  I have read the ISO8573-1 spec.

--
Mike Call
CORE Facilities Manager
University of Maine
Coordinated Operating Research Entities Cleanroom/TASC
ESRB Barrows Hall Room 294
207-581-3382
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