[TRNSYS-users] reg - timebase and zone temperature

David Bradley bradley at tess-inc.com
Tue May 2 10:24:53 PDT 2006

   The timebase is used to calculate the coefficients that describe the 
thermal behavior of the walls in the building over time. These coefficients 
are essentially values that tell you how important the temperature 
difference across the wall and energy transfer through the wall were at t-n 
timebases ago. You can think of the time base as the pixel size in the 
picture that makes up the temperature history of the wall. By changing the 
time base from 1 hour to 2 hours, you are essentially cutting the 
pixelation of your picture in half. It is not too surprising that you would 
see a bit different temperature response in the zone from changing your 
time base. The difference must be within reason of course...
Kind regards,

At 08:47 4/30/2006, RAJ KUMAR wrote:
>Dear all,
>          First I  simulated my model room (4x4x3m) by keeping timebase as 
> 1 to find zone temperature . Then I changed the  timebase to 2, there is 
> variation in zone air temperature.  I have doubt, why there is variation 
> in temperture, Could anyone please clarify my doubt?.
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Thermal Energy System Specialists (TESS), LLC
David BRADLEY                           2916 Marketplace Drive - Suite 104
Partner                                        Madison, WI 53719
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E-mail: bradley at tess-inc.com
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