[TRNSYS-users] shading calculation

Tue Oct 1 01:36:30 PDT 2019

Thank you very much Marion and David!

Karol Bandurski

From: Marion Hiller [mailto:Hiller at Transsolar.com] 
Sent: Tuesday, October 1, 2019 8:56 AM
To: TRNSYS users mailing list at OneBuilding.org
<trnsys-users at lists.onebuilding.org>
Cc: David BRADLEY <d.bradley at tess-inc.com>; Karol BANDURSKI
<karol.bandurski at put.poznan.pl>
Subject: AW: [TRNSYS-users] shading calculation

Karol,

you don't need to turn on "detailed radiation mode" for a zone for
generating and using a shading mask.

If  "standard radiation mode" is selected for all zones and you generate
shading/insolation mask, there will be a shading mask generated only.

If you run the simulation there is a notice in the *.log / *.lst file :

*** Notice at time        :         0.000000

    Generated by Unit     :    56

    Generated by Type     :    56

    Message               : Shading mask file *.shm  for external windows
exists and will be used.

In addition, you can define a geometric shading output for checking.

In many cases, the geometric shading has a significant impact but not the
geometric distribution of direct solar radiation.

Kind regards,

Marion

----------------------------------------------------------------------------
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--- 

Dipl.-Ing. Marion Hiller 
TRANSSOLAR Energietechnik GmbH 
Stuttgart - Munich - New York - Paris  

t:  <tel:%2B49.711.67976.27> +49.711.67976.0   f:  <tel:%2B49.711.67976.11>
+49.711.67976.11

 <http://www.transsolar.com/> www.transsolar.com/   

KlimaEngineering - Technologien für energieeffizientes Bauen und
Nutzerkomfort in Gebäuden 
Transsolar Energietechnik GmbH, Curiestrasse 2, 70563 Stuttgart 

Amtsgericht Stuttgart - HRB 23347 / Steuernummer: 99073/00911 / USt-IdNr.:
DE 152272639
Geschäftsführer: Matthias Schuler, Thomas Auer, Stefan Holst, Dieter
Schnelle 

Von: TRNSYS-users <trnsys-users-bounces at lists.onebuilding.org
<mailto:trnsys-users-bounces at lists.onebuilding.org> > Im Auftrag von David
BRADLEY via TRNSYS-users
Gesendet: Montag, 30. September 2019 20:25
An: TRNSYS users mailing list at OneBuilding.org
<trnsys-users at lists.onebuilding.org
<mailto:trnsys-users at lists.onebuilding.org> >
Cc: David BRADLEY <d.bradley at tess-inc.com <mailto:d.bradley at tess-inc.com> >;
Karol BANDURSKI <karol.bandurski at put.poznan.pl
<mailto:karol.bandurski at put.poznan.pl> >
Betreff: Re: [TRNSYS-users] shading calculation

Karol,

 Would it be possible to activate the detailed radiation model only for
certain critical zones in the building? These might be zones that have a lot
of windows for the given floor area.

kind regards,

 David

On 09/24/2019 05:33, Karol BANDURSKI via TRNSYS-users wrote:

Dear Experts,

My goal is to get solar gain reaching each zone of my multiunit residential
building. I need to take into account shading of surrounding buildings and
self-shading.

I have prepared appropriate model in SketcUp (.idf enclosed).

It seems to me that .shm file is enough for my goal. But detailed beam
radiation calculation need also .ism file for each considered zone.

My computer is not manage to create .ism files, I have only .shm file
(enclosed).

Is there any way to get this solar gains, based only on .shm?

Simplification of building model are not solution for me. (I have simplified
it as much as possible and each change of geometry could generate whole
model error).

Kind regards,

Karol Bandurski

--------------------------------------------------------------------

Karol BANDURSKI M. Sc.

Faculty of Civil and Environemntal Engeneering

Division of Heating, Air Conditioning and Air Protection

Poznan University of Technology

 <http://www.put.poznan.pl/~karol.bandurski> www.put.poznan.pl/~karol.
bandurski

 <https://www.researchgate.net/profile/Karol_Bandurski>
https://www.researchgate.net/profile/Karol_Bandurski

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***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI  53703 USA

P:+1.608.274.2577
F:+1.608.278.1475
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http://www.tess-inc.com
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