Re: [TRNSYS-users] diffuse radiation from total radiation

[Jaime Gonzalez Rodriguez <gonzalezro.jaime@gmail.com>]

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@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@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

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Jaime. González Rodríguez