Re: Simulating external shades

["Laurent Serres" <laurent.serres@xxxxxxxxxxxxxxx>]

Hello,
One solution:
If "Sombrero" write its results in a file you can read it with a data reader (type 19).
With an "equation statement" you can make the multiplication between the shading coefficient and the output of radiation processor (beam radiation)...
With a second "equation statement" you  can add diffuse radiation (output of type16).
The two ouputs of equation statement (total radiation and beam radiation) must be the inputs of type56.
You have to do this for each wall and window.


I think you're right for geosurf.

Laurent SERRES 
IUT Génie Civil
3, Rue du Clos Courtel
BP 90422
35704 RENNES CEDEX 7
FRANCE
Tel: (33) 2 23 23 42 02

Fax: (33) 2 23 23 40 51

e-mail: laurent.serres@univ-rennes1.fr

  ----- Original Message ----- 
  From: Marco Sangiorgi 
  To: trnsys@relay.doit.wisc.edu 
  Sent: Friday, May 24, 2002 9:47 AM
  Subject: Simulating external shades


  Hello,

  I'm not an expert TRNSYS user, so I'm posting this message hoping somebody
  can help me, though it is possibly a silly question.

  How can I simulate shades on the external surface of the walls?

  For a given orientation, i.e. WEST, I have defined various thermal zones,
  each one with different external walls. Depending on the hour of the day,
  some walls are exposed to the sun and other are shaded (that is they receive
  diffuse radiation).

  I'm using a program called "Sombrero" to calculate the Shading Coefficients
  of each wall hourly. This means that I have a file with the shading
  coefficient of each wall for every hour.

  So, how can I say to the TRNSYS or PREBID that the beam radiation that walls
  are receiving is that calculated by the Solar Radiation Processor (Type16)
  multiplied by shading coefficient?

  Example
  beam radiation(wall 1)=Type16 output x shading coef.

  I think that the GEOSURF parameter is just for the radiation entering inside
  a thermal zone, isn't it?

  Thank you,

  Marco