[EnergyPlus_Support] Re: Temperature out of bounds

["berlinclownfish" <SPlamp@xxxxxxxxxxxxxxxx>]

Dear EnergyPlus-support,

I experience the identical problem as for the previous users, 
although the background might be different (refer to: message#8614), 
I've decided to join the current thread.

BACKGROUND
I've continued the modeling process by replacing a single VAV 
terminal unit w/ reheat option with a VAV terminal unit w/o reheat 
and at the same time modeled a low temperature hydronic system for a 
selected subsurface (ThirdFloor, Zone 79310, C_79310_1_0_0_0_0) in 
the corresponding zone.

SYMPTOM
After executing the simulation, EnergyPlus terminates with a fatal 
error indicating that the temperature of a surface (interior 
partition) is out of bounds (209.29). What puzzles me, is that the 
probelamtic surface indicated is actually on the model's sixth floor
(SixthFloor, Zone 79073, P_79073_10146_0_10101).

DIAGNOSIS
I've tried to investigate the problem further, but I'm unable to 
establish a connection between the two surfaces, but it appears that 
the error only occurs during the winter design day, when heating is 
available by a schedule an required by the zones heating setpoints. I 
presume, the heating energy of my ceiling panel somehow ends up in a 
non-related partition, three floors above, thus causing the 
temperature being out of bound.

POSSIBLE CONCLUSION
The problematic surface is part of the stairwell (Stair 1) oriented 
towards north direction, where stair's on each floor and ceiling are 
interconnected through a hole in the slab and ceiling, respectively. 
I wanted to contribute from the effect of minimizing the simulation 
runtime required to model dedicated HVAC descriptions for each stair 
on each story by using holes an some kind of mixing pattern instead.

I'll upload my file 'SPlamp_in_v7.idf' for further reference.

Any feedback is appreciated,

Sandro



The primary EnergyPlus web site is found at:
http://www.energyplus.gov

The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/

Attachments are not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site.

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/join
    (Yahoo! ID required)

<*> To change settings via email:
    mailto:EnergyPlus_Support-digest@xxxxxxxxxxxxxxx 
    mailto:EnergyPlus_Support-fullfeatured@xxxxxxxxxxxxxxx

<*> To unsubscribe from this group, send an email to:
    EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/