Thanks. I got the simulation to run without crashing. However, when I increase the air infiltration from the "cracks" around the window the energy use actually increases. Overriding the ZoneInfiltration: DesignFlowRate must be effecting the HVAC system performance.
Is there a way to proxy for air infiltration through the envelope by using "Zone Air Flow" instead of "Air Flow Network"?
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Richard Raustad <RRaustad@...> wrote:
>
> The AirflowNetwork object will override the ZoneInfiltration object when
> an airflow network simulation is performed.
>
> Did you change the AirflowNetwork control setting?
>
> AirflowNetwork:SimulationControl,
> AriflowNetwork_All, !- Name
> >>>> MultizoneWithDistribution, !- AirflowNetwork Control
>
> The choices for this input are:
> \key MultizoneWithDistribution
> \key MultizoneWithoutDistribution
> \key MultizoneWithDistributionOnlyDuringFanOperation
> \key NoMultizoneOrDistribution
> \default NoMultizoneOrDistribution
>
>
> jkneifel_florida wrote:
> >
> >
> > Does specifying a ZoneInfiltration:DesignFlowRate override an
> > AirflowNetwork:Multizone:Surface:Crack?
> >
> > I ran a simulation with an infiltration design flow rate for each
> > zone. I then added a "crack" around the windows to simulate poorly
> > sealed windows. I made sure to define the reference conditions for the
> > crack and specified which surfaces (all windows) would have the
> > "crack". But the simulations results were unchanged. My first thought
> > is that the design flow rate overrides the "crack". I have been
> > reading through the documentation, but I have not been able to find
> > the answer as to why this occurred.
> >
> > Would it be appropriate to just increase the design flow rate for the
> > zone to include the additional infiltration?
> >
> > Thanks.
> >
> >
>
> --
> Richard A. Raustad
> Senior Research Engineer
> Florida Solar Energy Center
> University of Central Florida
> 1679 Clearlake Road
> Cocoa, FL 32922-5703
> Phone: (321) 638-1454
> Fax: (321) 638-1439 or 1010
> Visit our web site at: http://www.fsec.ucf.edu
>
> UCF - From Promise to Prominence: Celebrating 40 Years
>
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