[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[EnergyPlus_Support] PlantFlowResolver: Branch flow rates out of bounds

Dear All,
    I developed a model with 13 zones and tired to use compact HVAC 
VAV and FCU to feed those 7 zones and 6 zones respectively. However, 
during simulation, it showed an error as shown below:

** Warning ** PlantFlowResolver: Branch flow rates out of bounds, for 
Plant Loop=CHILLED WATER PLANT CHILLED WATER LOOP, Branch=VAV 1 
COOLING COIL CHW BRANCH
**   ~~~   ** Conditions should be: 886.834 <= 68.233 <= 92.188 
Occurrence info=TIANJIN ANN CLG .4% CONDNS DB=>MWB, 07/21 08:00 - 
08:15

  ** Severe  ** FindRootSimpleController: Controller error for 
controller = VAV 6 COOLING COIL CONTROLLER
   **   ~~~   **  Occurrence info=TIANJIN TIANJIN CHN CUSTOM-545270 
WMO#=545270, 01/01 01:15 - 01:30
   **   ~~~   **   Controller function is inconsistent with user 
specified controller action = Reverse action
   **   ~~~   **   Actuator will be set to maximum action
   **   ~~~   ** Controller control type=Temperature
   **   ~~~   ** Controller temperature set point = 12.29 [C]
   **   ~~~   ** Controller sensed temperature = 726.87 [C]
   **   ~~~   ** Controller actuator mass flow rate set to 125.96 
[kg/s]
   **   ~~~   ** Controller actuator temperature = 735.61 [C]

This error occured at all branches of VAV and FCU. What should I do 
to solve this problem?


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

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/