[TRNSYS-users] Simulation with data that repeat ciclically

David BRADLEY d.bradley at tess-inc.com
Wed Feb 6 12:19:13 PST 2013


Ivan,
   Angel makes a very good point about the radiation processor. Type9 
will of course rewind itself as soon as it gets to the end of the file. 
However, the sun position as computed by the Type16 radiation processor 
will keep progressing with simulation time. One thing that you could do 
is to run a 1-day simulation and pre-process all of the solar radiation 
data (in other words use a Type9 to read in the raw data and a Type16 to 
process the solar. Then use a Type25 (printer) to create an output file 
that contains not only the temperature, humidity, pressure etc directly 
from your original data file but also the processed solar radiation for 
the surfaces that are of interest. In your second simulation, you would 
read in the output file from the first simulation using a Type9; you 
could just have a single day of data in the file and the file would 
rewind at the end of each day.
Best,
  David


On 2/6/2013 12:34, Ivan Flores Abascal wrote:
>
> Dear trnsys users:
>
> I need to simulate a building with actual climate data during one day 
> (for example 1st of February) that repeats cyclically (supongamos 10 
> veces). After reading the documentation, I did not find any way to do 
> it automatically or in easy way.
>
> For this reason I have thought of getting the data set of one day from 
> the tm2 file (24 hours) and create a file with these climatic data 
> repeated  ten times (240 hours). Then I will use the type 9 to read them.
>
> Another suggestion?
>
> Thanks a lot in advance.
>
> Kind regards
>
> *Ivan Flores Abascal*
> Lecturer of heat transfer
> ivan.flores at ehu.es
> 94 601 8214
>
> *MAKINA ETA MOTOR TERMIKOAK SAILA/DEPARTAMENTO DE MÁQUINAS Y MOTORES 
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-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
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d.bradley at tess-inc.com

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