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[EnergyPlus_Support] Re: EPW file, time stamps and time zone

Hi,

Now that I think about it again, the time stamps should be local winter time. But still, any comment or explanation would be pretty useful for me.

Regards,
M.Sc. Farhang Tahmasebi
PhD Candidate / Project Assistant
Department of Building Physics and Building Ecology
Vienna University of Technology


--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Farhang" <farhang.tahmasebi@...> wrote:
>
> Hi,
> 
> While making an actual-year weather data file, I got confused about time stamps and time zone fields.
> 
> To put measured data in an EPW file:
> 
> 1) I assume that the time stamps are in UTC,
> 2) I set the timeZone field in the EPW file based on my local winter time (+1 in my case).
> 
> Now, Let's think about simulating building performance in Jan 1st 13:00 local time in Vienna (+1):
> 
> I assume that, EnergyPlus calculates the sun position and puts it in south (longitude: 180), but uses the radiation and other weather data of 12:00, because the timezone in EPW file is 1.
> 
> Are these assumptions correct? What other approach would you recommend to put measured data in an EPW file? How would one then interpret the time stamps in EnergyPlus output files?
> 
> Regards,
> M.Sc. Farhang Tahmasebi
> PhD Candidate / Project Assistant
> Department of Building Physics and Building Ecology
> Vienna University of Technology
>



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