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Re: [TRNSYS-users] formatting raw weather data for use in TRNSYS17 model validation



<I have raw weather data from a weather station that I want to use in validating a simulation model against observational data in a single room. What is the process of inputting and formatting this data (in .csv format) so it can be used in TRNSYS17 as the weather file. From what I have read Type 15 reads in standard formats (TMY2 etc) but my weather data isn’t in a standard format. There are typical measurements with this weather station (i.e. dry blub temp, RH, total incident radiation on horizontal surface, barometric pressure, wind speed, wind direction, etc) Do I need to use the ‘getIncidentRadiation’ function to generate the required data? Or do i need to use a weather converter utility outside of TRNSYS17?>

Put the data into a pure ASCII text file (CSV, text-file etc.) in column format and use the Type 9 data reader to read in the weather data.  You'll have to pass the solar radiation data to the Type 16 radiation processor to get the rest of the solar quantities.  While it's not "hard" it can be tricky so take some time, look at an example, and read the documentation for both Type 9 and Type 16 and you should be fine.

<Also, I do not have 8760 datapoints for each parameter, i want to validate the model during a shorter time period, i.e. 1 week. is this possible with TRNSYS?>

 

Yes it is - just make sure to set the correct starting day in the radiation processor and set the correct start and stop times for the simulation.

 

Jeff

 

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Jeff Thornton

President - TESS LLC

22 N. Carroll Street, Madison WI USA 53703

Office: (608) 274-2577  Fax: (608) 278-1475

www.tess-inc.com

E-Mail: thornton@tess-inc.com