[EnergyPlus_Support] Re: Minimum Outdoor Air During Occupied Hours - shows zero even when sizing:zone and

["jeannieboef" <jeannieboef@xxxxxxxxx>]

Thanks James. No. Checked that. Plus, if I set the outdoor air method to flow/zone with a min. then surely I expect this to stay this during unoccupied periods. It's like it's only responding to heating and cooling loads and not also my MIN ODA rate. SURELY MIN ODA takes priority over heating and cooling loads. I just can't find the problem.

Sizing:Zone,
  118451,                                                  !- Zone Name
  13,                                                      !- Zone cooling design supply air temperature {C}  ! For cooling room setpoint 24°C as per G3.1.2.8  deltaT = 11°C
  32,                                                      !- Zone heating design supply air temperature {C}  ! For heating room setpoint 21°C as per G3.1.2.8  deltaT = 11°C
  0.008,                                                   !- Zone cooling design supply air humidity ratio {kg-H20/kg-air}
  0.008,                                                   !- Zone heating design supply air humidity ratio {kg-H2O/kg-air}
  Flow/Zone,                                               !- Outdoor Air Method 

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "James V Dirkes II, PE" <jim@...> wrote:
>
> Is the daylight savings period affecting your schedule?
> 
>  
> 
> The Building Performance Team
> James V. Dirkes II, P.E., LEED AP
> 1631 Acacia Drive NW
> Grand Rapids, MI 49504
> 616 450 8653
> 
>  
> 
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx
> [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of jeannieboef
> Sent: Thursday, October 07, 2010 1:18 PM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Subject: [EnergyPlus_Support] Re: Minimum Outdoor Air During Occupied Hours
> - shows zero even when sizing:zone and
> 
>  
> 
>   
> 
> My ventilation jumps on exactly 1 hour after occupation becomes non-zero.
> Why is this?
> 
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx
> <mailto:EnergyPlus_Support%40yahoogroups.com> , "jeannieboef"
> <jeannieboef@> wrote:
> >
> > sizing:system has non-zero minimum outdoor air rates!
> > 
> > In the AllSummary report Minimum Outdoor Air During Occupied
> Hours/Mechanical Ventilation [ach] reports zero values.
> > 
> > 
> > 
> > Do I need to specify a reporting variable output...I had specifiy
> > 
> > Output:Variable, 118129, Zone Mechanical Ventilation Air Change Rate,
> hourly;
> > 
> > to get it to report the Average Outdoor Air During Occupied Hours.
> > 
> > 
> > 
> > My infiltration rate is set to no infiltration, but i have a 
> > 
> > Output:Variable, 118451, AirflowNetwork Zone Infiltration Air Change Rate,
> hourly;
> > 
> > for my AirflowNetwork which is not reported in the AllSummary report.
> > How can I include this.
> >
>




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