Hello,

First of all I am a complete beginner with modelica so please forgive the stupid questions...

I would like to model a district heating system, ideally it would include one or several boilers, heat exchangers, pipes of various length and diameter distributing hot water to several buildings with different heating needs, and possibly storage tanks. Of course for the beginning I will keep it as simple as possible, and I'll try to improve the model when I get to learn more about OpenModelica.

Do you know which library I should use? I think the one which is best suited to what I want to do is Modelica.Fluid, but from what I understood it is not supported by OpenModelica. Is there any free equivalent?

For the moment I tried to use Thermal.FluidHeatFlow, but I don't even manage to build a very simple model. For example, I just want to create a closed water circuit, with a pump, a fixed heat flow block representing a boiler, and a convection block representing the house. But I don't know where to specify the initial temperature of the water, or even that the fluid used is water... Does anyone know where I could find a introduction/tutorial that could teach me that?

I'm also having trouble with understanding what the parameters for the components are. For example, how can i change the length and diameter of a pipe?

And a few basic questions: is it normal that the copy/paste isn't working? Why can't I simulate the examples included in the package?

Thanks a lot for any help you could provide!