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Re: [EnergyPlus_Support] COMIS_opening factors

To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] COMIS_opening factors
From: "Michael J. Witte" <mjwitte@xxxxxxxx>
Date: Wed, 29 Mar 2006 08:03:37 -0600
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No problem.  It happens often.  Glad to hear it is working now.

Mike

On 29 Mar 2006 at 9:33, friedl decock wrote:

> Thanks,
> 
> I' ve put the report at hourly reporting frequency, so that was the problem.
> Sorry, was a stupid mistake.
> 
> Friedl
> 
> On 3/28/06, Michael J. Witte <mjwitte@xxxxxxxx> wrote:
> >
> >  Are you reporting at the TIMESTEP reporting frequency?  The opening
> > factor can
> > change at every zone time step, so if the reporting frequency is longer
> > than
> > the zone time step, you will see the opening factor averaged over that
> > time
> > period.
> >
> > Mike
> >
> >
> >
> > On 28 Mar 2006 at 16:20, friedl decock wrote:
> >
> > > Thanks, but still the problem isn't solved.
> > >
> > > Even if I leave the following field blank "Limit Value on Multiplier for
> > > Modulating Venting Open Factor", E+ don't take the openingfactors I
> > defined
> > > in Comis:AirFlow:Opening. If I give the 'window open factor for
> > ventilation'
> > > a value 0.2, the openingfactor varies between 0 and 0.2. I only want to
> > have
> > > 0 and 0.2.
> > >
> > > Friedl
> > >
> > > On 3/28/06, Michael J. Witte <mjwitte@xxxxxxxx> wrote:
> > > >
> > > >  1.  Modulation of the vent opening can be disabled.  From the Input
> > > > Output
> > > > Reference, just before the field "Limit Value on Multiplier for
> > Modulating
> > > >
> > > > Venting Open Factor":  Note that the default values of the following
> > > > fields are
> > > > such that, if none of the fields are specified, modulation will not
> > occur.
> > > > (p.
> > > > 350, pdf p. 386).
> > > >
> > > > 2.  The only way I can think of to turn off venting when high wind or
> > rain
> > > > is
> > > > present would be to use the "Venting Schedule".  By reporting the wind
> > > > speed
> > > > and rain flag from a weather file run (or by converting the epw file
> > to a
> > > > csv
> > > > file), one could use a spreadsheet to create a set of schedule values
> > > > which are
> > > > zero when high wind or rain is present.  This set of schedule values
> > could
> > > > be
> > > > saved as a text file with 8784 rows for use with Schedule:File:Comma.
> > > > NOTE:
> > > > There is a known bug:  "Schedule:File:Comma only takes 8760 values.
> > The
> > > > 24
> > > > values after Feb 28 are always assumed to be for Feb 29, and Dec 31 is
> > > > always
> > > > zero.  For non-leap year simulations, this results in value for March
> > 1
> > > > being
> > > > skipped and all remaining values shifting up.  Workaround:  A partial
> > > > workaround is to include values for Feb 29 in the csv file.  This will
> > > > ensure
> > > > that the March 1 values are used for March 1 and no shift occurs.  But
> > > > this
> > > > still results in zero values for Dec 31.  There is no workaround for
> > that
> > > > part
> > > > of the problem."  (This has been fixed for the next release.)
> > > >
> > > > Mike
> > > >
> > > >
> > > >
> > > > On 24 Mar 2006 at 18:17, friedl decock wrote:
> > > >
> > > > > Hi,
> > > > >
> > > > > I'm also trying to simulate a zone with night cooling. When night
> > > > cooling is
> > > > > needed I want to have the windows open at opening factor 0.2 and
> > when it
> > > > > isn't needed just closed windows. That means that I only want to
> > have
> > > > two
> > > > > opening factors.
> > > > >
> > > > > E+ takes an opening factor in function of the temperature difference
> > > > between
> > > > > indoor and outdoor, so the opening factor is variable.
> > > > > Does anyone know how I can have fixed opening factors? (or a little
> > > > trick
> > > > > with the value on multiplier, ...?)
> > > > >
> > > > >  Is it possible to stop the night cooling when it starts raining or
> > when
> > > > the
> > > > > windspeed is too high?
> > > > >
> > > > > Friedl
> > > > >
> > > > >
> > > > > [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.
> > > > >
> > > > > EnergyPlus Documentation is searchable.  Open EPlusMainMenu.idf and
> > > > press the
> > > > > "search" button.
> > > > >
> > > > > 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
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> > > >
> > > > EnergyPlus Documentation is searchable.  Open EPlusMainMenu.idf and
> > press
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> > > >
> > > >
> > > >
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> > > >
> > > >  ------------------------------
> >
> > > >
> > >
> > >
> > > [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.
> > >
> > > EnergyPlus Documentation is searchable.  Open EPlusMainMenu.idf and
> > press the
> > > "search" button.
> > >
> > > 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.
> >
> > EnergyPlus Documentation is searchable.  Open EPlusMainMenu.idf and press
> > the "search" button.
> >
> >
> >
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> >
> >  ------------------------------
> >
> 
> 
> [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.
> 
> EnergyPlus Documentation is searchable.  Open EPlusMainMenu.idf and press the
> "search" button.
>  
> Yahoo! Groups Links
> 
> 
> 
>  
> 
> 
> 
> 






The primary EnergyPlus web site is found at:
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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.idf and press the "search" button.
 
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References:
- Re: [EnergyPlus_Support] COMIS_opening factors
  - From: Michael J. Witte
- Re: [EnergyPlus_Support] COMIS_opening factors
  - From: friedl decock

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