[TRNSYS-users] hybrid small scale CHP plant combining geothermal with solar thermal (PTCs) power

[David BRADLEY]

Alexandros,
   Type1288 is appropriate for applications in which the working fluid's 
thermal properties change with temperature. The other two models (Types 
1257 and 536) assume constant properties over the working temperature 
range. The Type1257 model is designed around a few particular test 
procedures used to characterize the performance of parabolic 
concentrators. You should use that model if you have the parameter data 
that it requires.

   As far as an ORC engine component is concerned, we have usually 
modeled these quite simply using a generic performance map component 
such as Type42. You'll define the engine's COP as a function of a few 
variables of interest (low and high temperature sinks for example) and 
then enter this performance data into an external file to be read by 
Type42 during the simulation.

   I need a little more information in order to make a recommendation 
about the geothermal source. Are you talking about using the ground as 
thermal storage or using it as an actual source of energy (like a very 
very deep mine or heat exchanger)
Kind regards,
  David



On 12/9/2014 12:51, ALEXANDROS PECHTELIDIS wrote:
> Hello,
>
> I am new in TRNSYS, so I would like a little help in choosing the 
> right components for the above simulation model.
>
> Can you suggest any specific parabolic trough model component among 
> types 1257, 536 and 1288 given the fact that our goal is to achieve a 
> thermal output power equal to approximately 200kW (really small scale)
>
> Considering the geothermal source... I couldn't find any relative 
> component type!
>
> Neither for the electric power generator which I have to apply an 
> Organic Rankine Cycle (ORC) engine. I am aware that I have to add such 
> a component and modify it afterwards. Is it possible to find an 
> existing code the ORC generator, or can you give me any tip on how to 
> make the modifications in the new component?
>
> Thanks in Advance.
>
> Kind Regards
> Pechtelidis Alexandros
>
>
>
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at lists.onebuilding.org
> http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org

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

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/trnsys-users-onebuilding.org/attachments/20141210/b32d4724/attachment-0002.htm>