[TRNSYS-users] diffuse radiation from total radiation

[Jaime Gonzalez Rodriguez]

ups...sorry...DNI is Direct Normal Irradiation, Trnsys gives you this
information in TMY (Tipical Meteorological Year) types, for example type 109
regards

Jaime

On 4 May 2010 09:05, Laia Cases - iMat <lcases at imat.cat> wrote:

>  Hi Jaime,
>
> what you mean by "DNI"
>
> thanks in advence
>
> Laia
>
> En/na Jaime Gonzalez Rodriguez ha escrit:
>
> sure, if you have the global radiation in a horizontal surface (I guess
> that's the one you have)...you can say
> Ig=Id+Ib
> where Id and Ib are diffuse and beam irradiances on a horizontal surface,
> since you have the DNI and the elevation solar angle, and you know that Ib =
> DNI*sin(elev)
> you can say that
> Id=Ig-DNI*sin(elev)
>
> you can use a calculator to do so
>
> regards
>
> 2010/4/30 Laia Cases - iMat <lcases at imat.cat>
>
>> Hi Trnsys users,
>>
>> is there any way to obtain diffuse radioation from global radiaton data to
>> be use to simulation studio?
>>
>> thanks in advance
>> Laia
>> --
>>    *Laia Cases*
>> Unitat de Condicionament Tèrmic
>> *iMat - Centre Tecnològic de la Construcció
>> lcases at imat.cat
>> www.imat.cat*
>>   Wellington 23  ·   E-08018 Barcelona
>> T +34 93 553 97 95
>> F +34 93 553 97 96
>> Imprimiu aquest document només si és necessari
>>
>>
>> _______________________________________________
>> TRNSYS-users mailing list
>> TRNSYS-users at cae.wisc.edu
>> https://www-old.cae.wisc.edu/mailman/listinfo/trnsys-users
>>
>>
>
>
> --
> Jaime. González Rodríguez
>
>
> --
>    *Laia Cases*
> Unitat de Condicionament Tèrmic
> *iMat - Centre Tecnològic de la Construcció
> lcases at imat.cat
> www.imat.cat*
>    Wellington 23  ·   E-08018 Barcelona
> T +34 93 553 97 95
> F +34 93 553 97 96
> Imprimiu aquest document només si és necessari
>



-- 
Jaime. González Rodríguez
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