It seems like there have been several requests for this type of info lately. The solution I offer won't work for everyone but if it is feasible at your site it is far far superior to compressor pumped air. These days many research facilities have liquid nitrogen tanks. It is easy to dismiss their presence if you do not directly use the cryogenics.
If you have a liquid nitrogen tank near your NMR facility you can use the boil off gasses as a very clean dry source of drive gas without the worry of ANY compressor and with only some straightforward piping and regulators. We have such an installation at the Ford Research Lab and it is a great way to go. The cryogens are used for various applications and the additional boil-off gasses are used as a source of clean nitrogen for emissions measurements (and to provide spin and lift air for out two NMR spectrometers (Bruker MSL300 and AC200). BOC Gasses installed and maintains our system. If this sound like it might work for you contact them for more info. I am sure there are other companies that supply LN2 but they may not be qualified to install the gas plumbing. We have experience with BOC and are very satisfied with them.
Michael J. Rokosz
Nuclear Magnetic Resonance Facility
Physical and Environmental Sciences Dept.
Ford Research Laboratory
p. 313-594-3451
f. 313-248-5981
mrokosz_at_ford.com
-----Original Message-----
> From: Hongjun Pan [mailto:hpan_at_utk.edu]
> Sent: Wednesday, August 13, 2003 10:52 AM
> To: ammrl_at_chemnmr.colorado.edu
> Subject: looking for a solution for dirty compresed air
Dear Friends:
We are experiencing dirty oily building compressed air
problem recently which seriously affects our NMR facility. The
antique building compressor will not be replaced soon. Now I am
looking for a solution for this problem. However, the only solution
seems to install a suitable compressor for NMR facility in the NMR
room. I need your input about your experience if you had a similar
problem before:
What measure you took to protect the NMR facility if you
did not install the compressor?
If you installed the compressor, who is the vendor and what
model. Did you install a dryer? if you did, the vendor and model?
What is the noise level of the compressor and dryer?
Any related comment and suggestion are highly
appreciated.
Thank you for your help.
Received on Fri Sep 26 2003 - 15:16:33 MST