re: Cooling lasers
Marcia=Woda%Facs%UMASS@BANYAN.UMMED.EDU
Wed, 8 Feb 95 11:57:37 EST
What a painful subject!. We use both city water and have used big chillers.
The Neslab chiller was so large and made so much noise that all the operators
went home shaking at the end of the day and we finally put it out in the
hallway to gather dust. City water in cold climates in the winter is a
problem but our small lab is air-conditioned at all times. Not only are the
tubes themselves damaged but the power supplys and those expensive proteus
wheels can be damaged by poor water. One of our power supplys sprung a leak
inside from the metal tubing the cooling water runs through and the repair
bill was half the cost of a new power supply. We recently purchased an LP40
compact chiller from a division of Coherent which is only about 3x3x4 feet
and on wheels. I have hesitated to hook it up yet because we do not have
emergency power in the lab if there is a power failure in the building we are
in big trouble. Coherent tells me the 90-5's would probably handle the
almost instant loss of cooling water but if you did't get over to shut off
the pump and the pump came back on really fast the tube would suffer thermal
shock. So this I am weighing against city water which you usually still need
to cool the condensors.
CD ROM Vol 2 was produced by staff at the Purdue University Cytometry Laboratories
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If you have any comments please direct them to Dr. J. Paul Robinson, Professor & Director, PUCL,
Purdue University, West Lafayette, IN 47907. Phone:(317) 494-0757; FAX (317) 494-0517; Web http://www.cyto.purdue.edu
EMAIL robinson@flowcyt.cyto.purdue.edu
