[TRNSYS-users] Simulation of EAHE in foundations

[David BRADLEY]

Mathieu,

   The biggest difference between Type460 and Type1267 is that Type460 
models tubes that contain air while Type1267 assumes that the heat 
exchanger pipes are filled with liquid. Type1267 breaks the ground up 
into nodes and then uses a finite difference method to calculate the 
temperature of each node. It is very flexible in terms of the geometries 
that you can set up and it will give you an enormous amount of 
information about what the temperature profile in the ground surrounding 
your building looks like. Its downside is that it is not a fast model. 
It will slow your simulation down significantly.

kind regards,

  David


On 09/03/2019 21:14, Patin, Mathieu via TRNSYS-users wrote:
>
> Dear all,
>
> I work on an earth-to-air heat exchanger placed around the foundation 
> of a building. I am considering using the type 1267 for the simulation 
> of the exchanger. But there is hardly any information about it online. 
> Also, the institute where I work already bought type 460 for previous 
> works. I am therefore trying to get more information before going 
> forward with a purchase.
>
> Does anyone know how their two performances compare and which would be 
> best for my case?
>
> Thanks
>
> Mathieu Patin
>
>
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-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
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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