Hi Luke,
I inherited this setup, didn't design it. We've got an isolated chilled
water loop (processed chilled water) that exchanges heat with the building
chilled water. Off of that loop, we have Haskris heat exchangers that
provide water to the He compressors. This keeps the He compressors
well-isolated from the building chilled water and even the processed
chilled water. This may seem like overkill, but it helps keep the Haskris
systems in good order. And, because we have each He compressor on a
different exchanger, it keeps things isolated in case there is a problem
with one of the Haskris systems.
Maintenance is quite reasonable on the system, but we have had surprises
when the building unexpectedly lost chilled water.
Best,
Peter
On Tue, Jul 29, 2025 at 12:38 PM Fulton, Luke via groups.io wrote:
> Hi all,
>
> I'm planning end-of-life transition for our chilled water recirculator
> which services two helium compressor cold heads. The main unit sits in a
> hallway just outside the lab, and the building's design doesn't allow for
> putting it anywhere else.
>
> 1) Any recommendations for vendor or chiller type? I'm also interested in
> general quotes (feel free to message me privately with any insights on what
> we might expect).
>
> 2) Some in my department are pushing for integrating into the chemistry
> building's existing chilled water network. I've not heard of labs choosing
> this approach, and my impression is endless complications from algae and
> other sundry building issues. Anyone seen success with this? Or is it one
> of those 39-and-a-half-foot-pole topics?
>
> Kind regards,
> Luke
>
> Luke Fulton, PhD CHEM BLDG R003
> NMR Core Facility Director Unit 3060
> COR2E & Department of Chemistry 55 N Eagleville Road
> University of Connecticut Storrs, CT 06279
> email: fko24003_at_uconn.edu
> (alias): luke.fulton_at_uconn.edu
>
>
>
--
*Peter Thompson, Ph.D.*
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Innovation Center (METRIC)
Research Assistant Professor, Department of Molecular and Structural
Biochemistry
North Carolina State University
51 Polk Hall
Raleigh, NC 27695
Phone: 919.515.0836
Email: pmthomps_at_ncsu.edu
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Received on Tue Jul 29 2025 - 12:10:14 MST