Re: [EnergyPlus_Support] No chilled or hot water flow in the units.

["Michael J. Witte" <mjwitte@xxxxxxxx>]

Were the plant loops created using COMPACT HVAC objects or built up from simple 
HVAC objects (BRANCH, PUMP, etc.)?

If built up by hand, then the problem is most likely in the controls.  All of 
the following must work together to produce flow in a plant loop:

There must be a ZONE CONTROL:THERMOSTATIC to request heating/cooling from the 
HVAC system.

The HVAC controls must request flow in the the coil - could be a VAV terminal 
unit with built-in controls for a reheat coil, or a CONTROLLER:SIMPLE with a 
SET POINT MANAGER:*.

The coils must be ACTIVE components on their branches.

The loop pump must be scheduled on (or the schedule omitted completely).

If you cannot resolve the issue, please upload the file to the yahoo group 
files area or send as a zipped attachment to energyplus-support@xxxxxxxx

Mike


On 5 Sep 2007 at 9:58, Wenshu Fan wrote:

> I'm very confused that there is no chilled water or hot flow in all the
> units when I used the purchased water, while the load calculation and system
> sizing calculation work fine. As a result, zone temperature comes up to 200 deg
> F in the summer, which is out of range. Does anyone by chance can help me out?


========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support      
EnergyPlus-Support@xxxxxxxx





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/