Re: [EnergyPlus_Support] Dependency between IDF and weather files

[Linda Lawrie <linda@xxxxxxxxxxxxxx>]

The inclusion of a weather file overwrites any specified
location in the IDF file.  

For Ground Temperatures, you can use the GroundHeatTransfer:* objects and
have the basement/slab preprocessors run for each file.  You can
read about using these in the IORef or Auxiliary Programs
document.

You can use the SizingPeriod object for the weather file (e.g.,
SizingPeriod:WeatherFileConditionType), but these will not necessarily
represent the design conditioins for the location.

Links in the Macro Data Set file "Locations-DesignDays" will
yield SizingPeriod:DesignDay definitions for WMO regions.

At 08:23 AM 4/15/2011, Álvaro Fialho wrote:
> Hello everybody,
>
> Sorry for the possibly very naive question...
>
> I thought that the IDF files were independent from the location, and
> consequently from the weather files, what explains why the idf and the
> weather file are two independent input parameters when launching the
> energyplus simulation.
>
> But while checking more carefully some existing IDF files, I found that
> there are many things related to the location/weather that are 
> hard-coded in the IDF file:
> - Site: Location
> - SizingPeriod:DesignDay
> And specially:
> -Site:GroundTemperature
>
> Then comes the question: is there a way of having IDF files totally 
> independent from the location/weather files?
> I know in practice this is not very usual, but let's say that, for some
> reason, I want to evaluate the energy performance of a given building in
> both Miami and Chicago...
>
> And is there a "SizingPeriod:DesignDay" database easily
> available somewhere?

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