RE: [EnergyPlus_Support] About the plant operation schemes

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

Also, look at the PUMP objects.  Scheduling the pump and choosing CONTINUOUS or 
INTERMITTENT also controls operation of the entire loop.  If you want the loop 
to come on whenever there is a demand from a fan coil unit, then set the pump 
to INTERMITTENT and schedule it to be available at all times.

Mike


On 23 Jun 2005, at 16:22, Padhmanabhan, Sankar wrote:

> 
> Hi Charles,
> The control scheme schedule tells how the plant loop should be controlled.
> Basically the control scheme mentioned in the plant operation scheme is defined
> else where in idf with week and day values. If you go to the day value you can
> see for 24 hours the values as either 0 or 1. Now if for any hour the operation
> scheme is 0, then the plant loop does not follow the corresponding control
> scheme. The program will look for another control scheme defined for that hour.
> If there is no operation scheme found, then whole plant loop is shut down. An
> example for this is running a plant component differently in summer and winter.
> So for summer you define one control scheme and for winter you define another
> control scheme.
> 
> Hope this helps in your modeling.
> 
> Sankar
> 
> S.K.Padhmanabhan
> Research Associate
> Mechanical & Aerospace Engineering
> Oklahoma State University,
> Stillwater, OK - 74075
> Ph: (405)744-1038
> 
> 
> 
> -----Original Message-----
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx on behalf of energypluser
> Sent: Thu 6/23/2005 11:39 AM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Subject: [EnergyPlus_Support] About the plant operation schemes
> 
> Dear all
> 
> I am confusing about the description of the control scheme schedule in 
> the IORef.
> It says that "0" means the control scheme is off and "1" means the 
> control scheme is on.
> I wonder what will happen to the plant operating condition when the 
> control scheme is off. For my setup, only one plant is input for 
> supplying the chilled water.
> Will the plant be shut off?
> Since there is no schedule for the availability of the plant, how can i 
> schedule the plant to be available for specified time?
> Does the plant just correspond to the demand from the fancoil unit?
> Thank you in advance 
> 
>                                         charles
> 
> 
> 
> 
> 
> 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.
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> [Non-text portions of this message have been removed]
> 
> 
> 
> 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.
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 
> 
> 
> 



========================================================
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.
 
Yahoo! Groups Links

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

<*> 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/