[Trace-users] Energy Breakdown

[JRR]

You have a long way to go here, Pilllgrimmm................

Orientation DOES matter in a commercial building because commercial 
buildings almost always pay a peaking charge for electricity.
It is not only how much energy but WHEN during the day cycle to get the 
energy cost.  Also you have ignored the conversion efficiency of the 
active on-line
Uninterruptable Power Supply in generating heat.  A computing center can 
easily draw  40+ kw peak power.
You  should sign up as an APCC UPS dealer and get Symetra qualified - 3 
day class on computing center power supply systems....  Try Liebert 
brand also.

Also you should have a DOAS  for the computing center by itself, not 
tied to the rest of the building.  WHY ??  The computing center waste
heat tends to be at a a higher temperature so, depending on climate, you 
could just blow off the heat at night !!  --
Otherwise with the Compute waste heat mixed with the rest of the 
building you could be stuck for rejecting it through chillers / heat 
pump / etc.

For high rise buildings >>  some high rise buildings have mass dampers 
located about  71% of the height of the building to reduce wind.
induced sway. If this mass damper is liquid and damped with internal 
baffles you get to do both store heat and damp motions saving structural
dead load..........

Turning down the radio to get better gas mileage in a car is a 
catastrophic error,  because you will not hear the traffic report  that 
would allow
you to avoid the traffic accidents entirely, vastly improving energy use 
and time use.  An excellent example of the power of predictive controls and
operation configuration  choices..........   "Don't just think outside 
the box, think ahead of the box"

This also means that I schedule all energy intensive activities on the 
computers for late at night >>>  NO peaking charge <<<<<
That means the daily backup - - I fire up the SAN / NAS about midnight 
and kick it for a few hours.  By the same token ( computer science
humor not intended..... oh well )  Feed back from building simulations  
could make the computer guys change the speed of their backup
hardware saving massive Dollars.......

Yoda.
( The Green ears aren't so bad, I've been meaning to meet the flying nun 
to discuss flying,
but her re-runs are never on at the same time mine are.....  ROFL  and 
you thought Purchased Snow was baaad !!!!  )

bye
         JRR

On 6/29/2011 11:27 AM, John Eurek wrote:
> I have my 8760 energy model complete.  What I want to make is a pie 
> chart so I can tell the customer.
> x% of the total energy is due to the skin load
> x% of the total energy comes from conditioning the outside air,
> x% of the total energy is due to the servers.
> Heck, even as I right this I'm not exactly sure what I want.  When I 
> consider the energy due to the servers, do I count just energy to run 
> the servers or the energy to run the servers and the energy to cool 
> the servers?
> The method I plan to persue until somebody has a better suggestion is 
> to run a lot of models.
> 1.  I can remove all the people and equipment, leaving only the skin load.
> 2.  I can set the outside air requirements to zero cfm, this would 
> help me find the energy used to condition outside air
> 3.  I could removed all the servers, this would help me find the 
> energy used to run the servers and cool the servers.
> This seems to be the simplest, but with all the interdependancies, I'm 
> guessing that math may not work out.
> (Example, thought experiment, didn't actually try it.)
> Model A isa complete model.
> Model B is Model A minus all the walls and roofs.
> Model C is Model A minus everthing but the walls and roofs.
> Would Model B + Model C = Model A  (I wouldn't think so becase fan 
> curves and pump curves are not linear.)
> Has anyone done a report like this?  What has worked.
> (One thing I want to get across to the owner is that the servers are 
> so large that it takes x%.  And that orientation doesn't matter 
> because the skin load is x%.)
> I did rotate the building and found that there is only 0.5% difference 
> because the internal loads are so high.  He insisted that the 
> orientaion matters.  I told that if the building was emtpy it would 
> matter, but at this point it is like turning down the radio to get 
> better gas milage in a car.
>
>
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