I think that Modelica is a good tool for the simulation of multi-domain system. A lot of components are basically available. I'm using OpenModelica for power system and it's a powerful tool. I think you could find open source library for energy systems easily.

Thank you for your answer!

People from NREL thinks that it is suitbale tool, there are aplications that helps to perform co-simulation (BCVTB: http://simulationresearch.lbl.gov/bcvtb ) or other option for this might be FMI (Functional Mack Up Interface :https://www.fmi-standard.org/start) tool supported by modelica clients, while none of mentioned prevously (Trnsys, Gatecycle) doesnt.

If you are interested in building and energy system simulation - with modelica and FMI there are posibility to use "power" of EnergyPlus simulation engine for your simulations (http://simulationresearch.lbl.gov/fmu/EnergyPlus/export/index.html)

Hi Noussan, in principle Modelica is very suitable for energy system simulation. Finding the reight library depends on your special application. I can recommend the ClaRa for simulation of Clausius-Rankine cycles and water and steam based applications. You can download the library for free at www.claralib.com. More libraries can be found at https://www.modelica.org/libraries.

Hii Friedrich..is there any similar library for heat pump and refrigeration systems along with its media property functions.

Hi Aryan,

the most popular libraries for refrigeration systems and heat pumps are TLK Thermo's TIL and Modelon's AirConditioning. Depending on what you want to do XRG SImulation's HVAC and Hydonics might be interesting as well. However, all these libraries are commertial ones. Don't know if there are free libraries for that field (ClaRa is not originally intended for that purpose but can be adapted with limited effort when combined with TLK-Thermo's media library).

greets, Friedrich

Hii Friedrich,

                         Thanks for the information. I am aware of the commercial TIL media library but was looking for a free library. Currently I am working on a low capacity heat pump dryer model but facing problems due to unavailability of media library.

Hi Aryan,

then you might want to give the ThermoCycle library a try:

https://github.com/thermocycle/Thermocycle-library

However, I've never worked with it.

Hii Friedrich,

                       Thanks a lot. I think my problem of computing the media properties might be solved by ThermoCycle library. For the HP part is it better to model the components or should I use any existing library for that? 

Hi Aryan,

depends on what you want to do... I think the library is quite comprehensive as it contains models for pipes, heat exchangers, pumps, compressors, turbines, nozzles, valves and tanks. If you need specific models you will have to implement them yourself - sorry, that's how it works in Modelica (and also other libraries will very likely not cover all your specific needs).

Good luck with this package - would be nice to have some sort of feedback on it!