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Don't forget people also make a fair amount of heat on their own. The
average human apparently generates 330 BTUs of heat. When setting up the
ventilation, you'll also want to make sure there is minimal lag between the
microscope turning on, and the ventilation cooling off the room. The way
we fixed this was to set the ventilation to run constantly and have the
chilled water supply be what was modulated. We also had a fan blowing from
the floor up to the thermostat, to allow the thermostat to detect new heat
loads faster. These two tricks alone kept the room within +/- 0.1oC even
when a laser was turned on, which is excellent for keeping optics in
alignment long term.
-Ben Smith
On Wed, Feb 8, 2017 at 11:22 AM, <[log in to unmask]> wrote:
> *****
> To join, leave or search the confocal microscopy listserv, go to:
> http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy
> Post images on http://www.imgur.com and include the link in your posting.
> *****
>
> Hi Michael,
> the electrical power drawn equals to the heat produced.
>
>
> Our Zeiss confocal consumes about 1.3 kW with the Ar-ion at low power (UPS
> efficiency included), without the lamp (additional 0.2 kW; 0 kW for LED, as
> those are mostly off on a confocal). With chamber (small on stage are few
> Watts, large could be few hundred Watts), laser at full power it could be 2
> - 2.5 kW total.
>
> 1 kW = 3400 BTU/hr (according to google, I have no idea what those royal
> units mean)
>
>
> --
> Zdenek Svindrych, Ph.D.
> W.M. Keck Center for Cellular Imaging (PLSB 003)
> University of Virginia, Charlottesville, VA
> http://www.kcci.virginia.edu/
> tel: 434-982-4869
> Annual FRET Workshop: http://kcci.virginia.edu/workshop-2017
>
>
> ---------- Původní zpráva ----------
> Od: Cammer, Michael <[log in to unmask]>
> Komu: [log in to unmask]
> Datum: 8. 2. 2017 13:52:03
> Předmět: BTU for typical microscope question
>
> "*****
> To join, leave or search the confocal microscopy listserv, go to:
> http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy
> Post images on http://www.imgur.com and include the link in your posting.
> *****
>
> We are proposing a new lab and the designers would like us to provide
> cooling needs.
>
> For a laser scanning confocal with one gas (KrAr) and 3 or 4 diode lasers ,
> standard illumination for fluorescence, and an environmental chamber, does
> anyone have an estimate of BTUs?
>
> Thank you!!
>
>
>
> =========================================================================
> Michael Cammer, Microscopy Core & Skirball Institute, NYU Langone Medical
> Center
> Cell: 914-309-3270 Office: Skirball 2nd Floor main office, back right
> http://ocs.med.nyu.edu/microscopy & http://microscopynotes.com/
>
>
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--
Benjamin E. Smith, Ph. D.
Microscopy Specialist, Vision Science
University of California, Berkeley
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Fax (510) 643-6791
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