[64936] in North American Network Operators' Group
Re: cooling systems
daemon@ATHENA.MIT.EDU (Robert A. Hayden)
Wed Nov 5 12:50:35 2003
Date: Wed, 5 Nov 2003 11:49:48 -0600 (CST)
From: "Robert A. Hayden" <rhayden@geek.net>
To: Joe Abley <jabley@isc.org>
Cc: "Neil J. McRae" <neil@DOMINO.ORG>, Mike Tancsa <mike@sentex.net>,
"Robert E. Seastrom" <rs@seastrom.com>, <nanog@nanog.org>
In-Reply-To: <65199DA5-0FB7-11D8-B4D8-00039312C852@isc.org>
Errors-To: owner-nanog-outgoing@merit.edu
I've seen some designs that actually use water as the transport and
many-finned radiators at each end. Radiator transfer heat into cold water
inside which is pumped up a radiator in the sub-zero temps on the roof and
exchanged and then looped back.
Same basic principle as a traditional residential heat-pump that loops
through the ground 20 feet down or so.
I think using straight air would probably not be as efficient as a
closed-loop water transfer.
On Wed, 5 Nov 2003, Joe Abley wrote:
>
>
> On 5 Nov 2003, at 11:22, Neil J. McRae wrote:
>
> >> google search for "air to air heat exchanger" - there are many
> >> companies that make products that do exactly what you want.
> >
> > I'd be interested to see if these actually save any money. I'd
> > guess that the cost of moving the air around is going to be a factor.
>
> Seems to me that you have to move air regardless of what you use to
> cool it.
>
>
> Joe
>
