[20201] in North American Network Operators' Group
Re: MAE NY?
daemon@ATHENA.MIT.EDU (Richard Parker)
Wed Oct 7 01:01:02 1998
Date: 06 Oct 98 21:48:21 -0700
From: Richard Parker <richard_parker@thirdpoint.com>
To: nanog <nanog@merit.edu>
CC: Jay Adelson <adelson@equinix.com>
Reply-To: Richard Parker <richard_parker@thirdpoint.com>
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.
Well, lets see...
1) Largest minimum operating RH for a communications device that
I happen to have the specs for is 20%.
2) Smallest maximum operating RH for a communications device that
I happen to have the specs for is 80%.
3) Static electricity is minimized when RH is at or above 35%.
4) RH below 25% can cause embrittlement of hygroscopic materials
such as paper.
5) RH above 65% can cause mold growth and metal corrosion.
6) Humans are most comfortable when the RH is between 20% and 60%.
7) RH above 50% in cold weather can cause condensation inside of outer
walls.
So... perhaps a target humidity somewhere between 35% and 45% would
be ideal.
-Richard
