[TRNSYS-users] 10 min interval weather data (TYPE 9 & 16)

David BRADLEY d.bradley at tess-inc.com
Mon Jun 29 06:56:13 PDT 2020


Adnan,

  I'd suggest looking at a few things.

First, define your time step using an equation like DELT = 10/60 rather 
than as 0.1667. 0.1667 hours is close to but not exactly 10 minutes.

Second, use a Type65 connected directly to your Type9 and make sure that 
the data that you're getting from Type9 is what you'd expect. I suspect 
that you'll find some problems in the parameters that determine how the 
initial values are defined, whether you want each value to be 
interpolated, and whether each value in the data file is reported as an 
average over each 10 minute period or whether each is an instantaneous 
value reported at the end of the time period.

Third, make sure that Type9 is NOT interpolating the solar radiation 
data. Type16 does the solar interpolation and you don't want it done twice.

kind regards,

  David


On 06/29/2020 03:51, adnan rasheed via TRNSYS-users wrote:
>
> I am using 1 hr and 10 min weather data for the same location and year 
> but my results are very different.  i think there is a problem in TYPE 
> 9, 16 and simulation time step setting while i use 10 min interval 
> weather data. with 1 hr interval everything is ok.
>
> 1- TYPE 9 i and using the Time interval of data 0.1667
> 2- simulation card time step   0.1667
> 3- Type 16 is connected to 99th and 100th parameter of the Type 9.
>
> AM i doing something wrong.???
> -- 
> Adnan Rasheed
> Post-doc Research Fellow
> Kyungpook National University
> Daegu, South Korea.
> +82-102762-0105
> adnan.upm.spain at gmail.com <mailto:adnan.upm.spain at gmail.com>, 
> adnanrasheed at knu.ac.kr <mailto:adnanrasheed at knu.ac.kr>
>
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> 06/29/20, 05:45:49 PM 	
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-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
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d.bradley at tess-inc.com

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