[TRNSYS-users] Weather Data

[David Bradley]

Nguan Teck,
  Any timestep that is evenly divisible by one hour should work and 
should give approximately the same results. The solution to the problem 
depends on which component you are using. If you using a Type9 data 
reader then chances are that the interpolation and initial value 
settings are not quite matching up with your data. If you are using 
Type109 or Type15, there might be a bug in the code.
Kind regards,
 David


#TEO NGUAN TECK# wrote:
> I realized that the weather data provided by TRNSYS is not consistent.
>
>  
>
> The following data is retrieved at 1 hr, 0.5hr and 0.25 hrs interval 
> (or timestep) at the same time.
>
>  
>
> *TIME                    *
>
> 	
>
> *Temp_A                   *
>
> 	
>
> *RH_A                     *
>
> 	
>
> *Temp_B                   *
>
> 	
>
> *RH_B                     *
>
> 	
>
> *Temp_C                   *
>
> 	
>
> *RH_C                     *
>
> 	
>
> *Interval*
>
> HOURS              
>
> 	
>
> Deg C                
>
> 	
>
> %                
>
> 	
>
> Deg C                
>
> 	
>
> %                
>
> 	
>
> Deg C               
>
> 	
>
> %              
>
> 	
>
> hr
>
> 5000.00
>
> 	
>
> 26.70
>
> 	
>
> 71.71
>
> 	
>
> 26.30
>
> 	
>
> 73.43
>
> 	
>
> 27.05
>
> 	
>
> 70.26
>
> 	
>
> 0.25
>
> 	
>
>  
>
> 5000.00
>
> 	
>
> 30.35
>
> 	
>
> 57.88
>
> 	
>
> 29.72
>
> 	
>
> 60.00
>
> 	
>
> 30.62
>
> 	
>
> 57.00
>
> 	
>
> 0.5
>
> 	
>
>  
>
> 5000.00
>
> 	
>
> 30.44
>
> 	
>
> 57.26
>
> 	
>
> 29.80
>
> 	
>
> 59.41
>
> 	
>
> 30.60
>
> 	
>
> 56.73
>
> 	
>
> 1.0
>
> 	
>
>  
>
>
> 	
> 	
> 	
> 	
> 	
> 	
> 	
> 	
> 	
> 	
> 	
> 	
> 	
>
>  
>
> My question is:
>
> Which data (i.e. timestep) is more reliable?
>
>  
>
> Regards.
>
>  
>
> Nguan Teck
>
>  
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu
> https://www-old.cae.wisc.edu/mailman/listinfo/trnsys-users
>   

-- 
***********************************************************************
Thermal Energy System Specialists (TESS), LLC 
David BRADLEY                      22 N. Carroll Street - Suite 370 
Partner                            Madison, WI 53703 
                                   USA
P: +1.608.274.2577 
F: +1.608.278.1475
E-mail: bradley at tess-inc.com 
Web Pages:  http://www.tess-inc.com    and      http://www.trnsys.com

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