[57378] in North American Network Operators' Group
Re: Looking for advice on datacenter electrical/generator
daemon@ATHENA.MIT.EDU (Timo Janhunen)
Fri Apr 4 20:52:41 2003
Date: Fri, 04 Apr 2003 20:51:52 -0500
To: Bill Woodcock <woody@pch.net>, Leo Bicknell <bicknell@ufp.org>
From: Timo Janhunen <timo@aci.on.ca>
Cc: "'nanog list'" <nanog@merit.edu>
In-Reply-To: <Pine.GSO.4.44.0304041655350.10939-100000@paixhost.pch.net>
Errors-To: owner-nanog-outgoing@merit.edu
At 05:01 PM 04/04/2003 -0800, Bill Woodcock wrote:
> > 4) In larger sizes, Diesel gensets are _cheap_.
>
>The only difference between the diesel and gas genset is the carburetor,
>which is just different, not more expensive.
>
> -Bill
Gasoline and natural gas engines run with a compression ratio of between
8.5:1 and 11:1 nowadays. Diesel engines require a minimum compression ratio
of 22:1, since diesel fuel requires a lot of heat and extreme pressure to
ignite. Natural gas engines use carburetors, while the newer gasoline
engines are using fuel injection.
The diesel genset engines use direct injection, there are no carburetors
for diesel engines. Diesel fuel cannot be atomized by a carburetor the same
way gasoline can, since it is a fuel oil.
Timo
