Hi Ehsan,

I am not sure about your exact understanding of "freely available". Most software is covered by some license, that should set the terms for code reuse andd redistribution in particular. But if you account for the license and want to know how models are implemented, you may have a look at the source code, e. g.:

• Energy Plus: https://github.com/NREL/EnergyPlus
• ESP-r: https://www.strath.ac.uk/research/energysystemsresearchunit/applications/esp-r/

You try the authors of https://github.com/Ndrcotton/EGSim Dr Omar Abdelaziz maybe able to help.

Hi Lars Oliver Grobe,

Thank you for your answer.

Freely available are the open source software that do not need a license for using them.

So, I think for EnergyPlus and ESP-r (that you sent me the links), I need to buy the license first and then have an access to their implemented models, right?

Thank you for your answer Nigel Cotton

I am trying to reach Dr Abdelaziz through LinkedIn because I could not find his Email address on the internet. Do you have his email address?

Hi Ehsan Ahmadian,

both software are open source, so you can evaluate the implementation. Any other use, e.g. redistribution, modification, or taking over part in other software, has to comply with the license of course. So if you want to study the implementation you can do so, but if you want to e.g. develop a commercial software that you intend to sell, you have to verify if the license allows for it.

Best, Lars.

Hi Lars Oliver Grobe

Thank you so much for your clarification.

Best regards,

Ehsan

Hi Ehsan,

You can message him on research gate.net or send me your email and I will forward it to him.

regards Nigel

Hi Nigel Cotton ,

I just messaged him in ResearchGate and waiting for his response. Meanwhile, this is my email address ([email protected]) and I appreciate if you notify him.

Regards,

Ehsan

Try open modelica! https://openmodelica.org/

it comes with a python interface too.

(the more expensive version would be something like Dymola)

Thank you so much Ramon Weber