Re: [TRNSYS-users] Weather Data

[David Bradley <bradley@tess-inc.com>]

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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