[EnergyPlus_Support] Re: Data arrays in EMS

["Liam O'Brien" <obrien_liam@xxxxxxxxxxx>]

Linda: for predictive controls, a 24 hours would suffice for many applications (e.g., short-term thermal storage). How would one access this data through EMS?

Thanks for the prompt replies!

Liam

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Linda Lawrie <linda@...> wrote:
>
> We always have the next day's weather in memory (though not 
> necessarily accessible by EMS).
> Not impossible but somewhat fraught with difficulties would be  the 
> day after that.
> 
> At 01:07 PM 6/5/2013, Liam O'Brien wrote:
> >Thanks, Brent. I was hoping for something slightly more flexible 
> >that could look into the future, for instance (e.g., I'd like to be 
> >able to access 48 hours of future weather data from the current time 
> >step). Any thoughts?
> >
> >--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Griffith, Brent" 
> ><brent.griffith@> wrote:
> > >
> > > For past data, there are Trend variables that can hold an array 
> > of data for past zone timesteps -- see EnergyManagementSystem:TrendVariable.
> > >
> > > From: EnergyPlus_Support@xxxxxxxxxxxxxxx 
> > [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Liam O'Brien
> > > Sent: Wednesday, June 05, 2013 12:47 PM
> > > To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> > > Subject: [EnergyPlus_Support] Data arrays in EMS
> > >
> > >
> > >
> > > My grad students have run into independent situations where it 
> > would be incredibly useful to be able to store and access (on a 
> > time-step basis) numerical data in an array through EMS.
> > >
> > > Examples applications:
> > > - Generate a complex probability distribution of occupant 
> > behavior during the simulation
> > > - Store weather forecasts and use this data for predictive controls
> > >
> > > Using schedules won't suffice in this situation because we need 
> > to access future/past data; not just the present time step.
> > >
> > > Does anyone know of any way to accomplish this, or alternatively, 
> > of any plans to develop this capability in EMS in future E+ 
> > releases? Matrix arithmetic functionality would be a bonus, but one 
> > step at a time :)
> > >
> > > Best regards,
> > > Liam O'Brien
> > >
> >
> >
> >
> >
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> >
>




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