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

["Jean marais" <jeannieboef@xxxxxxxxx>]

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.
> >
> >
> >
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> >
> >
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>




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

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