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[EnergyPlus_Support] Re: How to run DesignDay simulations - Summer and Winter

Hello.

I have a last question.

If I choose:

        Yes;  !- Do the weather file calculation

I understand that E+ will run all the desing days in the EPW file, besides a annual simulation (or period).

In this case, if I also have chosen:

	Yes, !- Do the zone sizing calculation
	Yes, !- Do the system sizing calculation
	Yes, !- Do the plant sizing calculation

E+ also will run my own desing days defined in the IDF file.

For that, if my own design days in the IDF are the same that the design days in the weather file, E+ is simulating several times the same days.

is my reasoning right?

Thanks.


--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Jean marais" <jeannieboef@...> wrote:
>
> Thank you.
> 
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Dru Crawley <dbcrawley@> wrote:
> >
> > For a 'normal' simulation -- with the run period and using the design days
> > to size, you would enter:
> > 
> > SimulationControl,
> >    Yes, !- Do the zone sizing calculation
> >    Yes, !- Do the system sizing calculation
> >    Yes, !- Do the plant sizing calculation
> >    No, !- Do the design day calculation
> >   Yes;  !- Do the weather file calculation
> > 
> > For a test simulation where you only want to run the design days and not the
> > annual (or run period) simulation:
> > 
> > SimulationControl,
> >    Yes, !- Do the zone sizing calculation
> >    Yes, !- Do the system sizing calculation
> >    Yes, !- Do the plant sizing calculation
> >    Yes, !- Do the design day calculation
> >    No;  !- Do the weather file calculation
> > In both cases, it will run all the design days in your IDF file. ASHRAE
> > Fundamentals Handbook has 17 combinations of winter and summer design
> > condtions plus monthly design condtions.  These annual design conditions are
> > included in the .DDY that comes with the EPW .ZIP -- if there are design
> > conditions in the ASHRAE handbook for that location.
> > 
> > 
> > On Wed, Aug 31, 2011 at 10:10 AM, Linda Lawrie <linda@> wrote:
> > 
> > > **
> > >
> > >
> > > not commenting out the summer one should cause both to run.  and you will
> > > get simulation results for both.
> > >
> > > Yes, warmup happens for each "environment".
> > >
> > >
> > > At 07:56 AM 8/31/2011, Jean marais wrote:
> > >
> > > When I comment out SizingPeriod:DesignDay, Summer Design Day, my other
> > > SizingPeriod:DesignDay, Winter Design Day (the remaining one) gets
> > > simulated. I get results for the entire day after the simulation (which
> > > starts only after sizing and a proper building warmup). I assume this
> > > amounts to "design day calculation" specified in the SimulationControl
> > > object?
> > >
> > > SimulationControl,
> > >    Yes, !- Do the zone sizing calculation
> > >    Yes, !- Do the system sizing calculation
> > >    Yes, !- Do the plant sizing calculation
> > >    Yes, !- Do the design day calculation
> > >    No;  !- Do the weather file calculation
> > >
> > > The question is how do I do both of these special designday simulations?
> > > Obviously if the one follows the other, I will get 2 days worth of
> > > results...will a building warmup take place between them also?
> > >
> > > Like I said I'm not using runperiod objects.
> > >
> > >
> > >
> > > ------------------------------------
> > >
> > >
> > > Primary EnergyPlus support is found at:
> > >  http://energyplus.helpserve.com or send a message to
> > > energyplus-support@
> > >
> > > 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 currently allowed but be mindful that not everyone has a
> > > high speed connection.  Limit attachments to small files.
> > >
> > > EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the
> > > Documentation link and press the "search" button.
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >  
> > >
> >
>




------------------------------------

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