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Re: [EnergyPlus_Support] Re: Infiltration object yields no load when using "ACH"
Yes, the coefficients affect the amount of infiltration. Reviewing the
documentation in the IO Ref is see that:
Infiltration = Idesign * Fsch * (A + B*ABS(DeltaT) +C*WindSpeed +
D*WindSpeed ^2
In your example:
Idesign = 1 ACH
Fsch = 1
A=0
B=0
C=0
D=0
Infiltration = 1 * 1 * 0 = 0
JV Dirkes II wrote:
>
> Dear Linda,
>
> Does that mean that my 1 ACH is affected by the coefficients? THAT
> isn't clear at all in the documentation. (But I can work with it....)
>
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx
> <mailto:EnergyPlus_Support%40yahoogroups.com>, Linda Lawrie
> <linda@...> wrote:
> >
> > Of course, if you have all the coefficients at zero as you have, you
> > will always get 0.0 as the answer.
> >
> > Sorry, my eyes played tricks on me and I thought your constant term
> was 1.
> >
> > We probably should put in a warning for that.
> >
> > Linda
> >
> > At 02:18 PM 5/26/2008, JV Dirkes II wrote:
> > >Dear E+ Forum,
> > >
> > >I've defined my Infiltration with the "ACH" calculation method option
> > >as follows:
> > >
> > >INFILTRATION,
> > > Infiltrn_ParkingLobbies, !- Name
> > > ParkingLobbies, !- Zone Name
> > > SchCpct_AlwaysOn, !- SCHEDULE Name
> > > ACH, !- Design Volume Flow Rate
> calculation method
> > > , !- Design Volume Flow Rate {m3/s}
> > > , !- Flow per Zone Area {m3/s-m2}
> > > , !- Flow per Exterior Surface Area
> {m3/s-m2}
> > > 1, !- Air Changes Per Hour
> > > 0, !- Constant Term Coefficient
> > > 0, !- Temperature Term Coefficient
> > > 0, !- Velocity Term Coefficient
> > > ; !- Velocity Squared Term Coefficient
> > >
> > >Reports on the Air Change Rate, Total Heat Loss and Total Heat Gain
> > >show zero for all timesteps. Any ideas about what's wrong? Thanks.
> > >
> > >
> > >
> > >
> > >------------------------------------
> > >
> > >The primary EnergyPlus web site is found at:
> > >http://www.energyplus.gov <http://www.energyplus.gov>
> > >
> > >The group web site is:
> > >http://groups.yahoo.com/group/EnergyPlus_Support/
> <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
> > >
> > >
> > >
> >
> > [Non-text portions of this message have been removed]
> >
>
>
--
Richard A. Raustad
Senior Research Engineer
Florida Solar Energy Center
University of Central Florida
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------------------------------------
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