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RE: [EnergyPlus_Support] Urgent Help is required...Please



Ali, 
 
These errors can be tricky.  Usually it is because there are some significant internal heat gains and the HVAC system is not present, or not on, or not working properly.  Maybe it is because the system is schedule off at this time of night.   If you are trying to model a floating zone with no HVAC system, then you probably need more surfaces and/or more thermal mass in the surface constructions. 
 
brent

-----Original Message-----
From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]On Behalf Of Ali_Ajmi
Sent: Thursday, July 21, 2005 10:21 AM
To: EnergyPlus
Subject: [EnergyPlus_Support] Urgent Help is required...Please


Dear All, 

Could any one help me on this error appear after the file has execuated.

   ** Severe  ** Temperature out of bounds (200.21) for surface=ZONE INTERIOR SURFACE CEILING
   **   ~~~   ** in Zone=ZONE INTERIOR
   **   ~~~   ** occuring in environment=CHICAGO IL USA TMY2-94846 WMO#=725300 at 01/01 02:45
   **   ~~~   ** A temperature out of bounds problem can be caused by several things.  The user
   **   ~~~   ** should check the weather environment, the level of internal gains with respect
   **   ~~~   ** to the zone, and the thermal properties of their materials among other things.
   **   ~~~   ** A common cause is a building with no thermal mass -- all materials with
   **   ~~~   ** Regular-R definitions.
   **  Fatal  ** EnergyPlus has exited due to the reason stated above
   ************* EnergyPlus Terminated--Fatal Error Detected. 0 Warning; 1 Severe Errors

Regads
Ali

            
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