[TRNSYS-users] type 16 radiation processor

Diego A. Arias daarias at wisc.edu
Thu Nov 3 09:27:40 PST 2005

Dear Javier:

I tried using the data from Meteonorm for Madrid using Type89d (TMY2 
standard), and then, connecting it with Type16i.  Changing the time 
shift from -14 to -16 did not make much difference.  When I compared 
with the results from reading the data with Type109, I get the same results.

In the previous email, looked like using a time-shift of -16 you got the 
same results.   I think that the difference at sunrise might be due to 
rounding error when the difference between solar angle and sunrise angle 
is calculated in Type109.

I agree with you that the shift should be -16°.   Zaragoza, Spain: 
Long.= 1°West , LSM=15° East (UTC+1), Shift=-15°-1°= -16°

If you still have problems, I will be happy to help you. Please send me 
the project file and the weather data and I could take a look at it.


javier mota wrote:

> type 16 radiation processor.
> hallo all;
> i am javier mota from 3i-ingenieria madrid spain
> I have gor a curious result;
> for zaragoza latitude 41.4N;longitude 1.01W , UTC +1.
> so i calculte shift; -15-(1)=-16 and i got that solar constant has 
> been exceed 2 time-steps
> but if i make:-15-(-1)=-14 all data is correct and no warnings.
> I think the correct value is shift -16.
> am I ok?
> must I think there is an error in the data from Institute of 
> meteorology in spain type16 reads, but no in the way type 16 calcula?tes.
> Is correct shift=-16 or -14
> Thank you in advance
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Diego A. Arias
TRNSYS Coordinator
Solar Energy Laboratory
University of Wisconsin - Madison
1500 Engineering Drive
Madison, WI 53706

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