[103407] in North American Network Operators' Group
Re: cooling door
daemon@ATHENA.MIT.EDU (Paul Vixie)
Sat Mar 29 15:14:11 2008
To: nanog@merit.edu
From: Paul Vixie <vixie@isc.org>
Date: 29 Mar 2008 19:06:47 +0000
In-Reply-To: <p06240800c414178d17fc@[192.168.0.2]>
Errors-To: owner-nanog@merit.edu
jcurran@mail.com (John Curran) writes:
> While the chilled water door will provide higher equipment
> density per rack, it relies on water piping back to a "Cooling
> Distribution Unit" (CDU) which is in the corner sitting by your
> CRAC/CRAH units.
it just has to sit near the chilled water that moves the heat to
the roof. that usually means CRAC-adjacency but other arrangements
are possible.
> I know that it would have to be quite a bit before
> many folks would: 1) introduce another cooling system
> (with all the necessary redundancy), and 2) put pressurized
> water in the immediate vicinity of any computer equipment.
the pressure differential between the pipe and atmospheric isn't
that much. nowhere near steam or hydraulic pressures. if it gave
me ~1500w/SF in a dense urban neighborhood i'd want to learn more.
--
Paul Vixie
