ups...sorry...DNI is Direct Normal Irradiation, Trnsys gives you this information in TMY (Tipical Meteorological Year) types, for example type 109<br>regards<br><br>Jaime<br><br><div class="gmail_quote">On 4 May 2010 09:05, Laia Cases - iMat <span dir="ltr"><<a href="mailto:lcases@imat.cat">lcases@imat.cat</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
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Hi Jaime,<br>
<br>
what you mean by "DNI"<br>
<br>
thanks in advence<br>
<br>
Laia<br>
<br>
En/na Jaime Gonzalez Rodriguez ha escrit:
<div><div></div><div class="h5"><blockquote type="cite">sure, if you have the global radiation in a horizontal
surface (I guess that's the one you have)...you can say<br>
Ig=Id+Ib<br>
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)<br>
you can say that<br>
Id=Ig-DNI*sin(elev)<br>
<br>
you can use a calculator to do so<br>
<br>
regards<br>
<br>
<div class="gmail_quote">2010/4/30 Laia Cases - iMat <span dir="ltr"><<a href="mailto:lcases@imat.cat" target="_blank">lcases@imat.cat</a>></span><br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div bgcolor="#ffffff" text="#000000">Hi Trnsys users,<br>
<br>
is there any way to obtain diffuse radioation from global radiaton data
to be use to simulation studio?<br>
<br>
thanks in advance<br>
Laia<br>
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Cases</b><br>
Unitat de Condicionament Tèrmic<br>
<b>iMat - Centre Tecnològic de la Construcció<br>
<a href="mailto:lcases@imat.cat" target="_blank">lcases@imat.cat</a><br>
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<span style="font-size: 8pt; font-family: Arial; color: green;"><b>Laia
Cases</b><br>
Unitat de Condicionament Tèrmic<br>
<b>iMat - Centre Tecnològic de la Construcció<br>
<a href="mailto:lcases@imat.cat" target="_blank">lcases@imat.cat</a><br>
<a href="http://www.imat.cat/" target="_blank">www.imat.cat</a></b><br>
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Wellington 23 · E-08018 Barcelona<br>
T +34 93 553 97 95<br>
F +34 93 553 97 96<br>
Imprimiu aquest document només si és necessari</span>
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</blockquote></div><br><br clear="all"><br>-- <br>Jaime. González Rodríguez<br>