[TRNSYS-users] sloping surfaces

[David BRADLEY]

Marcus,
   Vertical walls should have a slope of 90, not a slope of zero. Slopes 
are measured from the horizontal. A zero slope indicates a horizontal 
surface.
Kind regards,
  david


On 7/21/2011 08:01, Marcus.Joppich wrote:
>
> Hello David,
>
> thank you for your answer. I´ve tried it. The following steps were 
> performed:
>
> I defined 6 orientations of walls to external: Northwest (Wall to 
> external)/ Southeast (Wall to external)/ Northeast (Wall to external)/ 
> Northwest with a slope of 37 degrees (sloping roof)/ Southeast with a 
> slope of 37 degrees (sloping roof)/ Northeast with a slope of 37 
> degrees (sloping roof).
>
> At Type109 I defined 6 surfaces with the following parameters:
>
> Surface1/Slope of surface 0/Azimuth of surface 225
>
> Surface2/Slope of surface 0/Azimuth of surface 135
>
> Surface3/Slope of surface 0/Azimuth of surface 315
>
> Surface4/Slope of surface 37/Azimuth of surface 225
>
> Surface5/Slope of surface 37/Azimuth of surface 135
>
> Surface6/Slope of surface 37/Azimuth of surface 315
>
> Then I connected the outputs with the inputs by Type56.
>
> Is it the right way?
>
> I get a fatal error: "Error in automatic heat transfer calculation  
> for surface   1 or its adjacent surface!: Automatic heat transfer 
> calculation is only allowed on surfaces within a zone.  Please check 
> building input file (.bui)", but I think it has a different reason.
>
> Thank you for your help.
>
> Regards, Marcus
>
> *Von:*David BRADLEY [mailto:d.bradley at tess-inc.com]
> *Gesendet:* Mittwoch, 20. Juli 2011 19:12
> *An:* Marcus.Joppich
> *Cc:* trnsys-users at cae.wisc.edu
> *Betreff:* Re: [TRNSYS-users] sloping surfaces
>
> Marcus,
>  It depends somewhat on what component you are using to model the 
> attic. However, almost without exception, you need to define the slope 
> and azimuth of the attic roof surfaces in your weather component 
> (Type15 probably) and then pass the appropriate solar radiation 
> outputs from that component to the appropriate inputs of your building 
> component.
> Regards,
>  David
>
>
> On 7/20/2011 06:57, Marcus.Joppich wrote:
>
> Hello TRNSYS-users,
>
> I try to simulate few rooms in an attic. I don´t understand how I can 
> describe a sloping surface (like a sloping roof) with TRNSYS. Maybe 
> you can help me.
>
> Thanks for your time.
>
> Marcus
>
>   
>   
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>
>
>
> -- 
> ***************************
> David BRADLEY
> Principal
> Thermal Energy Systems Specialists, LLC
> 22 North Carroll Street - suite 370
> Madison, WI  53703 USA
>   
> P:+1.608.274.2577
> F:+1.608.278.1475
> d.bradley at tess-inc.com  <mailto:d.bradley at tess-inc.com>
>   
> http://www.tess-inc.com
> http://www.trnsys.com

-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI  53703 USA

P:+1.608.274.2577
F:+1.608.278.1475
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com

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