[TRNSYS-users] Exterior wall against ground

[Arie Kalkman]

Hello Daniel,

 

The easiest way is to model the ground using a ‘boundary’ with a constant
temperature.  

The difficulty is in determining the ground temperature.

When the wall is thermally well isolated, the ground temperature will
roughly become equal to the annual average ground temperature of the area
(provided the wall is large enough for edge effects to be negligible). 

When the wall is not thermally isolated, the ground temperature will
gradually increase, and after a couple of years the ground temperature just
below the wall will get close to the average temperature of the zone.(again
neglecting edge effects) The heat loss will become less every year.

 

Arie 

 

  _____  

Van: Büchele Daniel (Helbling Beratung + Bauplanung)
[mailto:daniel.buechele at helbling.ch] 
Verzonden: donderdag 12 april 2007 19:49
Aan: trnsys-users at engr.wisc.edu
Onderwerp: [TRNSYS-users] Exterior wall against ground

 

Hello everybody 

Can anyone, tell me whats the best way to simulate a external wall against
the ground. 
How can I define the ground ?? 

Thanks in advance 

Mit freundlichen Grüssen / Kind regards 

 

Daniel Büchele
Dipl. Ing. Gebäudeklimatik- / Technik 
Projektleiter  

 

Helbling Holding AG
Hohlstrasse 614
CH-8048 Zürich
Telefon +41 44 438 18 64
Mobile  +41 79 641 44 03
Telefax +41 44 438 18 10
 <mailto:daniel.buechele at helbling.ch> mailto:daniel.buechele at helbling.ch <
<http://www.helbling.ch/> http://www.helbling.ch> 

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