On Fri, Feb 4, 2011 at 2:59 PM, Dave <[email protected]> wrote:
> On 2/4/2011 1:28 PM, Don Stanley wrote:
> > It is a 180 HP Diesel driving a 40,000 watt generator. The rotating
> weight
> > is massive.
> > For those who question the mismatch, the engine will be at low RPM
> > for efficiency.
> > Diesel engines don't have vacuum, they control fuel flow according to
> > the power needed and the intake air is unrestricted. Otherwise the
> > compression will not be enough to ignite the fuel.
> >
>
> How slow can you run it without causing problems? I understand the
> big thing is to keep the engine loaded.
>
The engine will be 1125 RPM which will produce the 55 - 60 HP required
to run the generator at full capacity
>
> Idling diesels without a load causes problems sometimes I understand.
>
I'm not aware of that. Loan truckers habitually idle the engine while
sleeping
in cold and hot weather. Tell me more.
>
> I'd like to try to do what you are doing, but with the intention of
> being able to switch it in and out from the grid at will.
>
I would monitor and sync with the grid and make the switch near 0 current.
If it's 3 phase, be sure all phases match the grid and switch both on then
drop the one you are taking off line. Or you could be tough and take both
off
then turn on the one you want to use.
The reason I am serious about careful phasing 3 phase, I saw an operator
roll a 4 ton Diesel generator over in the parking lot because he only
checked
1 phase for sync and threw the switch. Believe me you dont want to do that.
>
> But my project list is pretty long right now..
>
There will be a better solution next year. Talk to you then.
Thanks again
Don
[email protected]
>
> Dave
>
>
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The modern datacenter depends on network connectivity to access resources
and provide services. The best practices for maximizing a physical server's
connectivity to a physical network are well understood - see how these
rules translate into the virtual world?
http://p.sf.net/sfu/oracle-sfdevnlfb
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