Re: [EnergyPlus_Support] query

[Don Shirey <shirey@xxxxxxxxxxxx>]

For the input deck in question (PurchAirTables.idf), the Run Control 
object is set to run the winter and summer design days, followed by an 
annual simulation (Jan 1 through Dec 31).

For design day simulations, the weather information provided in the 
DesignDay object(s) will always be used .... independent of the weather 
file being passed to the simulation (in.epw).  See the "DesignDay" 
object in the IO Reference for further discussion.

In contrast the "weather file simulation" (annual simulation in this 
case), which is run after the two design days in this particular 
instance, will use the information in the weather file (in.epw).

Don Shirey wrote:

> How is the RUN CONTROL object specified in your input file?
>
> If you have "Do the design day simulations" = YES, and "Do the weather 
> file simulation" = NO, then the weather file is not being used.... 
> only the design day information/objects in the IDF would be used in 
> that case.
>
>
> kir kumar wrote:
>
>> Dear mike,
>> I have a question.
>> I have observed some thing peculiar in Energy plus simulations
>> I ran several simulations , each time with same input file(purchased 
>> air tables) but different weather files(weather files that come with 
>> Energy plus installation). I observed that the outdoor dry bulb 
>> temperatures in main output spread sheet file in each case. 
>> Surprisingly the outdoor dry bulb temperatures of design days are 
>> same in each case(each simulation run), no matter what the weather file
>> is. Why the outdoor dry bulb temperatures of design days are the same 
>> even if I keep changing the weather file.
>>  thanks
>>  kiran
>




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