[TRNSYS-users] Wall thickness in TRNSYS 3D

[Manuel Daconceicao]

In the tutorial.pdf you can read this:

 

Surfaces 

*  In Trnsys3d, all building surfaces (walls, floors, etc.) are represented in 3-D 

coordinates as infinitesimally thin.  Zone volume and surface area, which are 

automatically calculated entities, are derived from those 3-D coordinates.  However, 

you may modify the volume within TRNbuild. 

*  The construction that you select for each surface determines the thickness for the 

purposes of the heat transfer calculation, but it does not affect any geometric 

considerations. 

*  Typically, the building surfaces are measured from the outside edge of exterior walls, 

and the centerline for adjacent walls.  At the building corners, measuring from the 

outside edge will overestimate the total mass of the walls, while measuring from the 

inside edge will underestimate it. It is easier to measure the outside edge from the 

blueprints, but measuring from the centerline is the more accurate approach.  If the 

walls are especially thick, consider measuring from the centerline of the exterior 

walls.   

 

 

MATRIciel sa

Ir Manuel da Conceição Nunes 
                                         
Place de l'Université, 25 Etage 2 à 1348 Louvain-la-Neuve
Tél : 010/24 15 70 - Fax : 010/24 15 60 

daconceicao at matriciel.be <mailto:daconceicao at matriciel.be> 
http://www.matriciel.be <http://www.matriciel.be/> 

P  Please consider your environmental responsibility before printing this e-mail

 

 

 

De : Fred Betz [mailto:fbetz at aeieng.com] 
Envoyé : vendredi 19 mars 2010 15:04
À : trnsys-users at cae.wisc.edu
Objet : [TRNSYS-users] Wall thickness in TRNSYS 3D

 

How does Type56 interpret the walls created in TRNSYS 3D? 

 

Should I draw the outer wall surface, the inner wall surface, or half way in between in SketchUp?

 

Please advise,

 

Fred

 

 

Fred Betz  PhD., LEED AP 
Sustainable Systems Analyst

 

AEI | AFFILIATED ENGINEERS, INC.  
5802 Research Park Blvd. | Madison, WI  53719

P: 608.236.1175 | F: 608.238.2614  
fbetz at aeieng.com <mailto:fbetz at aeieng.com>   |  www.aeieng.com <http://www.aeieng.com/>   

 

 

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