Re: [EnergyPlus_Support] DAYSCHEDULE:LIST and timesteps for analysis

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

A point of clarification.  Schedules are resolved at the zone timestep level 
(TIMESTEP IN HOUR).  Schedules which are at a shorter frequency are averaged 
over the zone time step, even if they are used by HVAC equipment.

Mike


On 8 Dec 2003, at 22:43, Michael J. Witte wrote:

> When the time intervals in a schedule are different than the timestep, the
> values are interpolated to determine the appropriate value for the current
> timestep.  
> 
> The TIMESTEP IN HOUR object defines the length of the zone heat transfer time
> step.  This defines the maximum HVAC simulation time step, however, under
> certain conditions, the HVAC simulation may switch to a shorter time step. 
> There is no user control over the HVAC timestep.
> 
> To report at the HVAC timestep, use the "Detailed" reporting frequency.
> 
> Mike
> 
> 
> On 8 Dec 2003, at 19:35, mikemccarty79 wrote:
> 
> > Hi
> > I was wondering if anyone has used a DAYSCHEDULE:LIST to specify an 
> > event that occurs at a smaller timestep than is used by energy plus 
> > analysis.  For example, if my timestep for analysis is every 15 
> > minutes but I have a schedule that changes every minute, will I run 
> > into problems.  I am looking at demand controlled ventilation and 
> > would like to adjust the amount of outside airflow more often than 
> > every 10 or 15 minutes.  Also, is there anyway to view events 
> > happening in timesteps of less than 10 minutes?  
> > 
> > Thanks.
> > 
> > Mike McCarty
> > Graduate Student, Mechanical Engineering
> > Iowa State University
> > 2043 Black Engineering
> > Ames, IA 50010
> > 515-294-3080
> > mmccarty@xxxxxxxxxxx
> > 
> > 
> > 
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> 
> 
> ========================================================
> Michael J. Witte, GARD Analytics, Inc.
> EnergyPlus Testing and Support      
> EnergyPlus-Support@xxxxxxxx
> 
> 
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