[TRNSYS-users] greenhouse soil temperature

[David BRADLEY]

Emre,

   TGROUND is an input to Type56 so like all TRNSYS inputs, it will have 
the value of whatever model output or equation that you connect to it 
and if you don't connect anything then it will have whatever initial 
value you have set in the Type56 proforma. The default value for all of 
the Type56 inputs is 0. You need to connect the appropriate boundary 
temperature for floor x output of Type49 to the TGROUND input in Type56. 
You also need to add a Type56 output of QCOMO for each floor surface and 
connect it to the appropriate Type49 input(s). I would recommend that 
you follow the SlabOnGrade.tpf example that shows how the two components 
are connected (if you have not already done so).

kind regards and happy new year,

  David

On 12/31/2019 08:47, Emre Arpaci via TRNSYS-users wrote:
> I modeled a greenhouse with skeetchup and imported it to trnsys. I 
> used a controller to set up the heating point 15 °C .   i learned this 
> last week the program takes the soil temperature 0 °C . Because the 
> ground_floor boundary coundition is like that 1*TGROUND . and ı 
> couldnot connect TGROUND temperature to my greenhouse. Because I dont 
> know how can I get  this ground temperature in my greenhouse.  I read 
> the old mails in this site. I get this point Type 49 should be used 
> for determining ground temperature. I read 
> TRNSYS_Multizone_Slab_Model_Tutorial article to use type 49 correctly 
> but i couldnt run it.    Now is there any other method to calculate my 
> greenhouse ground temperature dynamically ?
>
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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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