Re: Water re-circulators

Mike

Thanks for your correction.  The LP60 is of course a heat exchanger and I 
will cool it with the building chilled water.  I would think most academic 
and industry sites would have access to chilled water but understand your 
situation where you don't - how is your facility cooled - regular 
AC/heatpumps?  Obviously works for you and I would pursue that option in 
your type situation.

Larry

At 10:06 PM 9/1/2004 -0500, you wrote:
>Larry,
>
>There seems to be some confustion... I am talking about a Chiller, not a
>heat exchanger.  Then you do not throw away the water to chill the LP60.  I
>do agree with you cost estimates for use of heat exchangers but some of us,
>we do not have the ability to use the AC cooled loop.
>
>thanks for your input!  Some Jerk at Scripps wrote me stating I was out of
>my mind and that his method was better.  I am going to keep my mouth shut
>next time...
>
>kind regards,
>
>Mike
>----- Original Message -----
>From: "Larry Arnold" <lwarma@med.unc.edu>
>To: "Cytometry Mailing List" <cytometry@flowcyt.cyto.purdue.edu>
>Sent: Wednesday, September 01, 2004 1:34 PM
>Subject: Re: Water re-circulators
>
>
> > Mike
> >
> > This does not strike me as a very viable solution for the general flow
> > facility.  I just ordered a Coherent LaserPure 60 (60KW) for $8,325.  This
> > will cool 2 Innova 90 and equivalent lasers.  I don't know where your
> > numbers for a 20KW chiller for $15,000 came from but obviously Coherent
>can
> > supply at about half that price and 4 times less than your quoted price of
> > $40K for a 60KW.  Thus while I certainly see how your big unit is
> > economical for your setup it is much too expensive for the general user
> > especially considering the need 460V (the Coherent 60 runs on 208).  Most
> > labs would not likely need to cool more than 2 lasers. If someone needs to
> > cool more than 4 Innova 90/300 series or equivalents then your system
>seems
> > like the way to go.
> >
> > Larry
> >
> > At 07:09 AM 8/28/2004 -0500, you wrote:
> > >Hi Cytometry Folks,
> > >
> > >Relating to Water Chillers...
> > >
> > >As you are aware, I am running multiple MoFlo sorters.  Although I have
> > >modified them to run two MoFlo side by side and the laser mounted between
> > >them and mirror imaged the systems, I need only one laser to operate two
> > >systems.  Still, I have 4 Innova 90 lasers and 1 new technology pulsed,
>air
> > >cooled 355nm Vangaurd laser.  The issues of water temperature here in the
> > >south as Dr. Hester states is a real problem when running single or
>multiple
> > >lasers.
> > >
> > >My solution to the problem was self contained chillers.  Cost was
>rediculous
> > >when looking at housing a facility for 12 sorters and at the time,
>planned
> > >for 1 laser each system.  Therefore, my building is somewhat constructed
> > >with the pipes and plumbing to handle 12 lasers and a loop system that is
> > >setup for four 60kW chillers to be added sequencially as we fill the room
> > >with sorters. Costs for one chiller for one laser (20kW) was in the area
>of
> > >$15,000 and 60kW chillers in the $40,000 range but this is because of the
> > >recommended tight tolerance of the temperature control.  This would have
> > >cost me $120.000.00 for enough chillers to handle the facility.
> > >
> > >Then, my due diligence told me there has to be a better way.  I then
> > >searched out a company that produces chillers for wineries.  I went to
> > >Houston and watched the manufacture of a 60kW chiller system and was
>quite
> > >impressed with the quality and workmanship.  That 60kW chiller system
>cost
> > >me somewhere around $20,000 delivered and Installed.  I have never worked
> > >with a better company!!!!	It has an 80 gallon reservoir and has been
> > >operating since last November 19 hours per day and has not flinched.  It
> > >does not have as tight of a tolerance as those "made for laser chillers"
>but
> > >we are sorting sperm that are less than 4.0% difference between male and
> > >female, runnning multiline UV at 150mW and in linear at gain 16 and the
> > >system is quite stable.
> > >
> > >The unit is an outside unit and runs on 460 so we installed a step up
> > >transformer from 208 to 460V.
> > >
> > >To me, there is no better way to run your lasers and it is very low cost
>as
> > >compared to the Coherent LP60 or any of the "made for laser" chillers and
>I
> > >dont thow away water at 3.0 gallons per minute to cool the heat
>exchangers.
> > >
> > >Information is below on how to contact them.  Please, if you contact
>them,
> > >let them know that I referred you.
> > >
> > >good luck,
> > >
> > >Mike
> > >
> > >
> > >(713) 462-2500 & (800) 473-9178  Contact Mike Marrone at
> > >mmarrone@waterchillers.com
> > >
> > >
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>2.jpg
> > >
> >
> > Larry W. Arnold, Ph.D.
> > Research Professor	and Director, Flow Cytometry Facility
> > Department of Microbiology and Immunology
> > Lineberger Comprehensive Cancer Center
> > CB# 7290
> > University of North Carolina at Chapel Hill
> > Chapel Hill, NC 27599
> > Phone: 919-966-1530
> > FAX: 919-962-8103
> >

Larry W. Arnold, Ph.D.
Research Professor  and Director, Flow Cytometry Facility
Department of Microbiology and Immunology
Lineberger Comprehensive Cancer Center
CB# 7290
University of North Carolina at Chapel Hill
Chapel Hill, NC 27599
Phone: 919-966-1530
FAX: 919-962-8103