?
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?is a 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.?
Energy Breakdown
Jun 29, 2011
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