[TRNSYS-users] Weather time step

freppelw at noirot.fr freppelw at noirot.fr
Tue May 3 07:10:27 PDT 2016


Thank you David for your reply.
I also realized that if I choose a time step less than 1 hour, the dew 
point temperature is approximated between entire hours. I cannot find 
the calculation rule in the documentation.
Do you have any idea where I can find it?

Best regards

Wirich



Le 2016-05-03 15:46, David BRADLEY a écrit :
> Wirich,
>   There are two basic Types that can be used to read weather data.
> Type15 is designed to read files that have a standard format (such as
> TMY2 or TMY3). Part of the standard format is a 1-hour timestep. If
> you modify a standard format weather file to have a different time
> step then it can no longer be read by Type15. Type9 can be used to
> read general weather data files. However, it does not have the solar
> radiation processing algorithms built into it as Type15 does. You'll
> need to use Type16 to process the results that are read by Type9.
> kind regards,
>  David
> 
> 
> On 04/29/2016 09:20, freppelw at noirot.fr wrote:
>> Hi everyone,
>> 
>> As you know, the weather file for TRNSYS (TM2) is built with a 1 hour 
>> time step.
>> 
>> My question is: If I modify the weather file so that I have a time 
>> step of 1 minute, would TRNSYS be able to execute the simulation? In 
>> this case, is there a time step value to change in the program or is 
>> it totally impossible?
>> 
>> Thanks in advance.
>> 
>> Wirich
>> _______________________________________________
>> TRNSYS-users mailing list
>> TRNSYS-users at lists.onebuilding.org
>> http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org
>> 
> 
> --
> ***************************
> David BRADLEY
> Principal
> Thermal Energy Systems Specialists, LLC
> 22 North Carroll Street - suite 370
> Madison, WI  53703 USA
> 
> P:+1.608.274.2577
> F:+1.608.278.1475
> d.bradley at tess-inc.com
> 
> http://www.tess-inc.com
> http://www.trnsys.com



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