[TRNSYS-users] Information

[David BRADLEY]

Adriana,
   I had thought that I sent a response about this. In case it did not 
get to you, here it is again:

...
   It would help to know a bit more about the configuration of your 
system: what are you drying, is the material in a big lump, is it spread 
out on shelves, is it moving, does it occupy most of the available space 
in the chamber or a comparatively small part of the space, etc.)

   I think you could probably use the Type56 multi-zone building model 
for the drying chamber itself.

   I would guess that you would need to write a new model for the 
material that you are drying. If the material is quite spread-out then 
this might be easily enough characterized by a first-order differential 
equation and you even might be able to use Tess Type693. Type693 is 
intended to model a thermal lumped capacitance that heats and cools 
according to a first-order differential equation but I imagine that 
pricipals are basically the same whether you are talking about thermal 
capacitance or moisture capacitance.

   If the product is not spread out, if important moisture gradients 
develop within it as it dries, or if its drying process is exothermic 
(like it is for compost) then I think you would need to write your own 
model or collaborate with someone who could write the model for you. In 
order to write the model you would need to have access to a FORTRAN 
compiler such as Intel Visual Fortran v11.x

   Once you have the model of the drying substance, you would connect 
its moisture loss to a moisture gain input of the building (drying 
chamber) model.

Kind regards,
  David

On 10/30/2011 20:45, Adriana Gómez Aldana wrote:
>
>
> Good Morning,
>
> I am a TRNSYS user since it is one of the tools for my phD thesis. 
> Currently, I am working in a solar drying problem and I would like to 
> know if there is a special module to simulate the drying chamber. If 
> it is possible to acquire this module, I would be very thankful if you 
> can explain me how is the procedure to access it.
>
> Thanks for your attention,
>
> Adriana Gómez
> phD Student - Engineering Department
> Universidad de los Andes
> Bogotá, Colombia
>
>
>
>
>
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu
> https://mailman.cae.wisc.edu/listinfo/trnsys-users

-- 
***************************
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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