Hi all,
We've got some problems with chilled water in the fabulous new
building into which we've moved our AvanceIII system with a cryoprobe,
and I'd like to hear how you all with cryoprobes are configuring your
cooling water.
We had been set up to run on a small chilled water loop that runs
through part of our building, but this is giving us two problems. 1)
The pressure in the line sometimes fluctuates, and 2) some junk has
been clogging up the lines inside the cryoprobe. We're temporarily off
that system, on a closed-loop Haskris chiller system that exchanges
the cryoprobe's heat with the room's air, wafting a hot scirocco
breeze at the spectrometer - clearly not a permanent solution.
On point 2: It may very well be that some of the anticorrosion/
antibacterial stuff in the building's lines is reacting with our black
rubber hoses, causing them to degrade and plug up our lines. Any of
you have this experience? Do you have any specific recommendations for
types of rubber hose?
Our building guys have installed a pair of filters in the line, and
now they're talking about a system with an additional pump and some
temperature-controlled valve and recirculating the heated water back
into the cryprobe because that'll somehow make the pressures work out,
and that just seems too complicated.
How do you do this? If you use house chilled water, please tell me if
it's on a local or a main loop, and whether you have any extra filters
or pumps in the line.
Thanks.
- Josh
Josh Kurutz, Ph.D.
Instructor and Senior Scientist for NMR
IMSERC, Chemistry Department
Northwestern University
2145 Sheridan Rd.
Evanston, IL 60208-3113
847-467-1681
fax: 208-978-2599
Facility: www.chem.northwestern.edu/imserc
NMR Blog: www.imserc-nmr.org
Twitter feed: twitter.com/imserc_nmr
Other: www.joshkurutz.com
Received on Fri Jun 25 2010 - 03:31:24 MST