Looking for advice on datacenter electrical/generator
timo at aci.on.ca
Sat Apr 5 01:41:53 UTC 2003
At 04:04 PM 04/04/2003 -0800, Bill Woodcock wrote:
> On Fri, 4 Apr 2003, Matthew Kaufman wrote:
> > natural gas has been off for multiple days in a row twice.
> > So for the last datacenter I built, I went with diesel.
>I'm not following your logic... How does the fact that natural gas is
>_usually_ available on-tap, and diesel _never_ is make diesel preferable?
Natural gas as generator fuel is generally not a good idea for a few reasons:
- Natural gas is volatile, hence not a good option in earthquake prone
areas - earthquake + natural gas line = big smelly leak - big smelly leak +
spark = big fire
- Diesel is fairly stable, and won't go up with quite so large a bang in a
fire, not to mention it can only be ignited under extreme temperature and
- The gas gets cut off immediately in any fire situation, usually affecting
a few city blocks at a time
- Diesel is readily available, and can be delivered by any Joe Citizen
during a disaster to the generator site, since it doesn't require much in
the way of special containers
Diesel generators come in both turbocharged and naturally aspirated models,
which can easily be serviced by any competent diesel mechanic. Genset
diesels are not any different than diesels in a passenger vehicle, tractor,
or transport truck. In fact, diesels in gensets are engineered to work
under much higher load conditions than vehicles, since they run constantly
at a higher RPM under load
Last, but not least: if you can't get diesel fuel from anywhere to run it,
buy a few gallons of vegetable oil from the local supermarket and pour it
in the tank. It'll work just as well.
More information about the NANOG