[TRNSYS-users] Air based earth duct

[David BRADLEY]

Benoît,

    I have used Transsolar's Type460 a number of times. I have the 
feeling that it over predicts cooling a bit but it has plenty of 
parameters that you can play with to tune the model. I have only run 
into "puits canadien" in a vertical orientation and I have only used 
Type460 for horizontal, parallel earth ducts . You might also contact a 
company called Rehau; they manufacture and market a high thermal 
conductivity plastic pipe that is often used in ground heat exchangers 
(both air and water) and they have a performance prediction tool that 
they use internally. Their performance estimates might be a help in 
tuning Type460.
Kind regards,
  David


On 4/6/2012 02:37, benoit.cogne at aximaseitha-gdfsuez.com wrote:
> Dear Trnsys users,
> We are looking for a solution to model multiple horizontal "air based 
> earth" ducts (in french "puits canadien")
> Does any one have a good idea ?
> Best regards
>
> *Benoît COGNE*
> Responsable Cellule Efficacité Energétique et Environnementale
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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

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

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