nanog mailing list archives

Re: MAE NY?


From: David Diaz <davediaz () netrail net>
Date: Fri, 9 Oct 1998 23:25:47 -0400 (EDT)

This was all good with the exception of temp for condensation.
Condensation can occur at just about any temp (within reason) that is what
Dew Point is.  Humidity is Dew point/(room) Temperature.  When they match
you have humidity of 100% and start to see condensation/fog.  Anyway this
is from flight school.  I have heard different engineers recommend 40%
humidity and maybe 67.5 degrees temp.  Something about enough humidity to
avoid static dischargies etc...??

PS- Anyone know of any colo space in Jacksonville, Fl??


At 4:07 AM -0000 10/7/98, Michael Dillon wrote:
On Tue, 6 Oct 1998, Jay Adelson wrote:

Too cold?  Are you serious?  Man, I just can't win.

Our readouts were reporting 68-71F... Somebody tell me what this needs
to be set to for our exchange facilities.  They're all pretty insanely
big, so this is something to do ONCE.  Nows the time, we're deep into
engineering HVAC for the first fifteen.  Oh, and I'd love to hear humidity
suggestions as well.

My experience is that electronic/computer type equipment runs best when it
is in a cool environment, i.e. too cold for a human in T-shirt to work in
for very long. And when the ambient temperature gets above room temp, then
you get too many wierd and unexplainable problems occurring or just plain
equipment failure. Sean Donelan is right to worry about condensation and I
believe that you should maintain a fixed humidity level in the air in your
facilities. Keep the temperature below 18C but not so low as to cause
condensation. Get some Compaq engineers to recommend a humidity level and
ask your HVAC peopel to keep it constant. In Palo Alto this will probably
mean adding humidity in the summer and removing humidity in the winter. In
the Northeast you would need to do the reverse.

--
Michael Dillon                 -               E-mail: michael () memra com
Check the website for my Internet World articles -  http://www.memra.com



Thank you,
David Diaz
Chief Technical Officer
Netrail, Inc

email:   davediaz () netrail net
pager: 888-576-1018
office: 888-NETRAIL


Colo facilities: Atlanta-NAP, Miami, Arlington, Chicago, San Francisco
888-NETRAIL for further information




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