Re: [TRNSYS-users] RADIACTION PROCESSOR

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

Javier,
 The solar constant parameter in Type16 is the amount of solar radiation 
falling on a 1 m2 surface outside the earth's atmosphere. There are a 
number of different estimates of this amount dating back to various 
research projects before the birth of TRNSYS. If you are getting only 6 
warnings about radiation exceeding extraterrestrial during the course of 
your simulation, I would not worry too much about it. The math and sun 
earth geometry can cause such calculation. If you are getting hundreds of 
those warnings then that is a good indication that there is something 
incorrect about your input file.
Kind regards,
 David

At 05:21 3/28/2006, javier mota wrote:
> HALO.
> I AM javier mota from 3i-ingenieria, madrid.
> we have installed a radiaction register in hellin, a city in albacete,spain.
> i am studying the data with a data reader and a radiation processor.
> i have data from 26-nov to 21 march and i found i have an error "the beam
> radiation excedeed the extraterrestrial radion forr 6 time steps."
> I am running simulation with a time step of 10 minutes, data reader has data
> at intervals of 10 minutes.
> I have looked all the parameteres and all lokk ok.
>
> but i have a doubt about the solar constant. 4871 kj / h m2 is the default
> value in tyrnsys.
> but it is a parmeter value.so i would be able to change this value.
> but it is called solar connstant, contant mean it is a fixed value.
> so, for this city in sapin, hellin, neqar albacete, the solar constant may
> be a parameter that a should change to another value?
> thanks in advance.
>
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