[TRNSYS-users] Compressed Gas Storage

[Ghady Dib]

Dear all,



I am using the “Compressed Gas Storage, Type 164, linked with a liquid
piston compressor (a model that I created with FORTRAN).



The simulation consists of compressing air and store it in the reservoir.
The outputs of the ‘’Type 164’’ are: Volume of gas in the reservoir,
Pressure of the gas in the reservoir, Pressure level and the Vdot_dump.



Initially the ‘’Type 164’’ perform initial time-step manipulations where
the number of moles initially in the reservoir are calculated after finding
the initial pressure

(P_INI = PLEV_INI (Level of pressure * PMAX * 1E5). And then the PGAS is
calculated by calculating the number of moles IN - moles OUT which they are
function of VDOT_IN (output of my compressor model)



I want to begin (at first time step) to compress the air from an inlet
pressure (that I fix, for ex: 10 bars) to an exit pressure (also that I
fix) that is equal to that initial pressure of the reservoir; For that
purpose I linked the PGAS (output of the Type 164) to the exit pressure of
my compressor (that is an input for my model).



It is not working; (I thought that trnsys will know that at initial time
the PGAS = P_INI and then I have an input for my compressor initially at
time0); apparently there is something wrong (Maybe PGAS initially is not
taking P_INI into consideration and then  at this stage PGAS can not be
calculated because VDOT_IN is not given).


I need your help.

Thank you in advance.

-- 


* Ghady DIBPhD studentLaboratoire CETHIL UMR 5008 Groupe Energétique des
Systèmes Thermiques et Frigorifiques (ESTF) Département Génie Energétique
et Environnement INSA Lyon France*
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/trnsys-users-onebuilding.org/attachments/20171106/bdfa49c9/attachment.html>