Re: [TRNSYS-users] Type 34 : strange output

[DIEGO A ARIAS <daarias@wisc.edu>]

Dear Jeff,

The mathematical description of Type34 (Volume 5, section 5.7.15)
explains that type 34 calculates the view factor for the opening to the
sky.  The view factor for an unshaded vertical surface is 0.5.  The
presence of wingwalls or overhang reduce the view factor.
If you have an unshaded surface (overhang projection equal to zero),
type 34 will use a shading factor equal to 0.5.
Please let me know if this answers your question or if you have any
additional questions.
Best regards,

Diego

----- Original Message -----
From: jfamailbox-i3er@yahoo.fr
Date: Friday, April 7, 2006 5:11 am
Subject: [TRNSYS-users] Type 34 : strange output
To: trnsys-users@engr.wisc.edu

> Hello TRNSYS users,
> I've done simulations of simple room with a window
> south oriented and several overhang (type 34)
> settings.
> And I?ve different value without type 34(directly
> connected to type 109) and connected to type 34 with
> overhang projection set to zero !!!
> Someone could explain it ?
> I linked TPF file
> 
> Regards,
> JeFF
> 
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