[Equest-users] lighting-schedule&lighting-demand

[Heinrich.ib-bauklima.de]

Nick,
 
thank you for you hints. But I don't have any idea in the moment.
 
I think it is something in the lighting-schedules
(EXHIBIT,ARCHIVE,CONFER,KITCHEN,GARAGE) that cause the problem, but I don't
know what it is.
If I change the lighting schedules for all zones to office-lighting-use
(OFFICE) there will be no fluctuating lighting loads.
If I add some other schedules e.g. corridor-use (CORRID,SERVER), as done for
BASELINE_28e, there will be no fluctuation either.
 
The weather-file is an IWEC-File generated with eQ_WthProc.
Fell free to use it.
 
Heinrich
 
 

--------------------------------------------------

b +e
Ingenieurbüro
für Bauklima und 
Energiekonzeption
Dr. Heinrich Post

Brienner Str. 48
D-80333 München

Fon     +49 (0) 89/54320678
Fax     +49 (0) 89/54320679 
Mobil   +49 (0) 160/7225740
 <blocked::mailto:dr.post at ib-bauklima.de> mailto:dr.post at ib-bauklima.de

Besuchen Sie uns im Internet:

www.ib-bauklima.de <blocked::http://www.ib-bauklima.de/> 

--------------------------------------------------

 

 
 

--------------------------------------------------

b +e
Ingenieurbüro
für Bauklima und 
Energiekonzeption
Dr. Heinrich Post

Brienner Str. 48
D-80333 München

Fon     +49 (0) 89/54320678
Fax     +49 (0) 89/54320679 
Mobil   +49 (0) 160/7225740
 <mailto:dr.post at ib-bauklima.de> mailto:dr.post at ib-bauklima.de

Besuchen Sie uns im Internet:

www.ib-bauklima.de <http://www.ib-bauklima.de/> 

--------------------------------------------------

 

 


  _____  

Von: Nick Caton [mailto:ncaton at smithboucher.com] 
Gesendet: Montag, 12. April 2010 17:46
An: heinrich at ib-bauklima.de; equest-users at lists.onebuilding.org
Betreff: Re: [Equest-users] lighting-schedule&lighting-demand



Heinrich, 

 

I’ve found something that may help or be a red herring
 

 

I tried running the simulation so I could view a few things in the
spreadsheet views, but I didn’t have the Dusseldorf weather file on-hand, so
without changing anything else I substituted a local weather file I had on
my computer for Kansas City, Missouri.

 

The results (see attached consumption/demand reports ) interestingly show
the area lighting fluctuating a good deal more than the demand report you
provided, suggesting whatever is off may be weather-dependant.

 

I do not see any daylighting specified for the interior lighting, which was
my initial guess, so there I am at a loss!  I’m not sure how else the
modeled interior lighting loads may be affected by the weather file/site
properties used (i.e. latitude/longitude)
 Does “Area Lighting” cover more
than interior lighting loads?  Perhaps someone more experienced can
comment
?  

 

I’ll be interested to hear your findings,

 

~Nick

 

PS: I’m unsure of whether a space being unoccupied might override any hourly
values entered in a lighting schedule...  I had a hunch this might be the
case since you appeared to have a clean block of months with uniformly
lowered demand.  Even so, I think I’ve verified it cannot  be a holiday
scheduling issue by changing your custom holiday schedule to “No holidays,”
and still observing fluctuating area lighting loads.  

 

cid:489575314 at 22072009-0ABB

 

NICK CATON, E.I.T.

PROJECT ENGINEER

25501 west valley parkway

olathe ks 66061

direct 913 344.0036

fax 913 345.0617

Check out our new web-site @ www.smithboucher.com 

 

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of
heinrich at ib-bauklima.de
Sent: Monday, April 12, 2010 7:34 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] lighting-schedule&lighting-demand

 

Dear eQUEST-Users,

 

 

this is a great community for troubleshooting in eQUEST.

So hopefully you can help me solving my problem with an eQUEST-model.

 

I have some serious trouble to model the lighting schedules of my baseline
building.

I defined the schedules as told from the client.

 

When I select some of the lighting schedules
(EXHIBIT,ARCHIVE,CONFER,KITCHEN,GARAGE) I get changes in lighting demand
over the year (Demand_Baseline_28f.pdf). 

But this is not correct. They should not change, because each of the
lighting schedules are modeled the same each week and do not change over the
year.

When I deselect these schedules I get constant lighting demands over the
year (BASELINE_28e.pdf).

I can't find any mistake in the lighting schedules.

 

Anybody know how to solve this?

Please feel free to check my eQUEST-model.

 

Thanks,

 

Heinrich

 

--------------------------------------------------

b +e
Ingenieurbüro
für Bauklima und 
Energiekonzeption
Dr. Heinrich Post

Brienner Str. 48
D-80333 München

Fon     +49 (0) 89/54320678
Fax     +49 (0) 89/54320679 
Mobil   +49 (0) 160/7225740
 <mailto:dr.post at ib-bauklima.de> mailto:dr.post at ib-bauklima.de

Besuchen Sie uns im Internet:

www.ib-bauklima.de <http://www.ib-bauklima.de/> 

--------------------------------------------------

 

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