[TRNSYS-users] Fluid Properties

[David BRADLEY via TRNSYS-users]

Javier,

   If you need properties from the fluids that are not in the 
FluidProperties() routine then you would need to add them by modifying 
the Fluids.f90 source code file and then to recompile the TRNDll using a 
Fortran compiler.

   Before you try to modify that file, however, I'd like to understand a 
bit more about the heat pump model that you want to write. For a number 
of reasons, TRNSYS's heat pump models (primarily in the TESS HVAC 
Library) rely on a catalog data lookup approach instead of being first 
principals models. By looking up the capacity and COP at certain 
operating conditions the models do not rely on the refrigerant 
properties, which makes for a more flexible and easy to implement model. 
If you'd like to send me an email directly, please feel free to do so. 
With a little more explanation about what you're looking for in a heat 
pump model I may be able to give you some additional direction.

kind regards,

  David



On 01/13/2017 14:33, Javier Vega via TRNSYS-users wrote:
> Hello TRNSYS users,
>
> I'm looking forward to program my own heat pump Type component. I was 
> checking on the programmer's guide to get familiar with FORTRAN (first 
> time I'm going to write in this) and the different functions in general.
>
> For now, all is OK except for the refrigerants listed in the Fluid 
> Properties. Preferably, I would like to simulate a heat pump using 
> R410a, which doesn't seem to be in the refrigerants available. What 
> are my options?
>
> Thank you very much,
> Javier Vega
> Mechanical Engineering Student, Universidad de Concepción, Chile
>
>
>
>
> _______________________________________________
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> TRNSYS-users at lists.onebuilding.org
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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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