Hello, I am trying to model Brayton cycle. The problem is, it seems in Open Modelica it is not possible to use existing models to make new packages or new models.
I tried to model the cycle in a new package by dropping components from ThermoPower Library. Is it possible to use components from existing libraries(ThermoPower & Modelica.Thermal packages)?

Here is the code:

package brayton1
 
  extends Modelica.Icons.Package;
         
  extends ThermoPower.PowerPlants.GasTurbine.Examples.GasTurbineSimplified;
 
  extends Modelica.Fluid.Examples.HeatExchanger.HeatExchangerSimulation;
 
   extends ThermoPower.Gas.Compressor ;
   
   annotation(
    Documentation(info = "This package tries to implement the brayton cycle simulation with the help of 4 basic componenets -Source, Sink, Compressor, Turbine.

Let's see how far it goes..."));
end brayton1;

Here is the list of errors I am getting:

[1] 17:23:55 Translation Error
Cannot instantiate bsr_brayton1 due to class specialization PACKAGE.

[2] 17:23:55 Translation Notification
[ThermoPower.Gas: 2956:7-2956:63]: From here:

[3] 17:23:55 Translation Error
[Modelica.Fluid.Examples.HeatExchanger: 74:5-76:35]: Duplicate elements (due to inherited elements) not identical:
  first element is:  outer .ThermoPower.System system "System wide properties"
  second element is: inner .Modelica.Fluid.System system(energyDynamics = Modelica.Fluid.Types.Dynamics.SteadyStateInitial, use_eps_Re = true)

[4] 17:23:55 Translation Error
Error occurred while flattening model bsr_brayton1

Someone help me please.

Hi  l3oo321,
First off,  thank You for your timely help. Secondly, the library I was talking about was "ThermoPower" library. But now, I actually have an issue with thermocycle library. Has a compatible version been released yet? Sorry for the confusion.

Here is the statement I am getting from OMEditor when i add Thermo/cycle library and restart the OMEditor:

[1] 22:20:47 Scripting Warning
Requested package Modelica of version 3.2.1, but this package was already loaded with version 3.2.2. You might experience problems if these versions are incompatible.

[2] 22:20:49 Scripting Warning
Requested package Modelica of version 3.2, but this package was already loaded with version 3.2.2. You might experience problems if these versions are incompatible.

[3] 22:20:52 Scripting Warning
Requested package Modelica of version 3.2, but this package was already loaded with version 3.2.2. You might experience problems if these versions are incompatible.

[4] 22:21:00 Grammar Warning
[C:/OpenModelica1.11.0-64bit/lib/omlibrary/Modelica_LinearSystems2 2.3.4/package.order: 0:0-0:0]: The package.order file does not list all .mo files and directories (containing package.mo) present in its directory.
Missing names are:
        WorkInProgress

[5] 22:21:00 Scripting Warning
Requested package Modelica of version 2.2.1, but this package was already loaded with version 3.2.2. You might experience problems if these versions are incompatible.

[6] 22:21:01 Scripting Warning
Requested package Modelica of version 3.2.1, but this package was already loaded with version 3.2.2. You might experience problems if these versions are incompatible.

[7] 22:21:02 Scripting Warning
Requested package Modelica of version 3.2.1, but this package was already loaded with version 3.2.2. You might experience problems if these versions are incompatible.

Thanks.

Hi Adrpo,

I am new to OpenModelica.I have installed OpenModelica version 1.11.0

I recently downloaded the libraries and added them with UTF-8 encoding. I also installed the ExternalMedia library as per your comment.I am getting following warning for adding ExternalMedia library:

[2] 15:40:43 Scripting Warning
Requested package Modelica of version 3.2.1, but this package was already loaded with version 3.2.2. You might experience problems if these versions are incompatible.

Also, after adding ExternalMedia Library I am not able to simulate the ThermoPower library  and am having the following error:

Cannot instantiate ExternalMedia due to class specialization PACKAGE.

Help me, please.