Dear group,
I have some questions about helium recovery systems. But first some
background:
We're in the planning stages of installing a helium recovery system. It
would be an intermediate sized system - Cryomech LHeP22 or equivalent.
We're looking at Cryomech and Quantum Design.
We have a really nice space for the system, but it's in a room with very
actively used NMRs. We've visited a site that has such a system, and
it's VERY LOUD. We're concerned about people being able to work in the
same room as the recovery system.
We have a "closet" within that room where we already have the helium
compressor of one of our cryoprobes. That room has electrical and
chilled water hookups for three more (water-cooled) compressors. So, we
could probably put the compressors for the purifier and liquifier into
that closet. But it seems that the liquifier itself is quite loud, and
the "recovery compressor" that compresses the helium from the bag into
the cylinders is very loud (Cryomech says 78dB). And they're both
probably too big to fit into the closet.
So my questions: does anyone have one of these recovery systems in a
room where people work? Does anyone have any ideas about sound
abatement? Is it possible to put walls around the liquifier and recovery
compressor, or do they generate too much heat for that? Apparently the
recovery compressor comes in a water-cooled version. If everything was
water-cooled, maybe then the liquifier and recovery compressor could be
walled off?
Any information or advice is greatly appreciated. I'll post a summary.
-Robert
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Robert Peterson, Ph.D.
Facility Manager - NMR Technology Center
UCLA-DOE Institute for Genomics and Proteomics
UCLA Dept. of Chemistry and Biochemistry
phone: (310)825-1816
fax: (310)825-0982
peterson_at_mbi.ucla.edu
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Received on Mon May 13 2019 - 10:46:12 MST