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Re: [TRNSYS-users] Weather Data



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

 


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