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Marcello,<br>
I'm not sure how one might combine Types64 and 67. Despite the
fact that I wrote Type64, I have never been convinced that it was a
very useful model. It computes the impact of a faraway mask on
radiation falling on a horizontal surface and was intended to be a
"quick and dirty" model to get a basic idea of shading by applying
one mask to all surfaces regardless of their orientation. If you
want a correct estimation of shading by obstacles (whether they are
far off or nearby) then you should really use Type67 in order to be
correct in the estimation of how the horizon affects that surface.
The disadvantage of Type67 of course is that you need to provide a
mask for each surface. However, all the masks can be provided in a
single file and if you have more than one orientation to worry about
then you can just shift the horizon index for each different
orientation of in the file. The angular heights of obstructions
don't change; only their position on the horizon changes.<br>
best,<br>
David<br>
<br>
<br>
<div class="moz-cite-prefix">On 06/11/2015 02:25,
<a class="moz-txt-link-abbreviated" href="mailto:marcello.caciolo@cofelyaxima-gdfsuez.com">marcello.caciolo@cofelyaxima-gdfsuez.com</a> wrote:<br>
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<p class="MsoNormal">Dear Trnsys users,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">I have a question about
the possibility to use type 64 and type 67 together.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">In my projects, I use to
define a “geographical” horizon line, valid for all
orientations, by type 64, and to use type 67 for masks due
to near obstacles (trees, buildings, …) (different for each
surface). Self-shading from overhang and wingwall are taken
into account by type 34.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Then, I connect outputs
of type 64 to type 67 and outputs of type 67 to type 34.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">However, type 34 provide
a parameter to say if radiation is provided by type 64 or
67, in order to avoid to take into account twice the sky
view factor, but type 67 does not.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I wonder if this can
have an impact on results.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Could you please give me
your advice?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thank you!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span
style="font-family:"Tahoma","sans-serif";color:#58595B">Marcello
Caciolo</span></b><span
style="font-family:"Tahoma","sans-serif";color:#58595B"><br>
</span><span
style="font-size:9.0pt;font-family:"Tahoma","sans-serif";color:#58595B">Responsable
Outils et Méthodes d'Analyse Energétique</span><span
style="font-family:"Tahoma","sans-serif";color:#58595B"><o:p></o:p></span></p>
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src="cid:part1.09020503.03080406@tess-inc.com"
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width="170"><br>
<b><br>
</b>Cellule Efficacité Energétique et Environnementale<o:p></o:p></span></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:gray">INGÉNIERIE
PROJETS <br>
15 rue Nina Simone<br>
CS 39601 - 44096 Nantes cedex 1</span><span
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</span><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:gray">Tél.:
+33 02 40 41 06 57</span><span
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href="mailto:prenom.nom@aximaseitha-gdfsuez.com">marcello.caciolo@cofelyaxima-gdfsuez.com</a><o:p></o:p></span></p>
<p class="MsoNormal"><b><span
style="font-size:8.0pt;font-family:"Arial","sans-serif";color:red">Le
26 mai 2015, nous emménageons au 15 rue Nina Simone – CS
39601 – 44096 Nantes cedex 1<o:p></o:p></span></b></p>
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***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
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