• A python/cython-based library for Positive-Displacement machine Simulation
• Written in a flexible way so that a wide variety of machines can be implemented with the same core.
• Two papers about PDSim are available in Int. J. Refrig. in 2020:
  • PDSim: A general quasi-steady modeling approach for positive displacement compressors and expanders preprint: PaperI
  • PDSim: Demonstrating the capabilities of an open-source simulation framework for positive displacement compressors and expanders preprint: PaperII

This version uses CoolProp v6.x

The core code of PDSim was written by Ian Bell, as part of a collaborative project with the Ray W. Herrick Lab faculty while backpacking around the world. It has its origins in the work done on modeling scroll compressors, and to this day the most comprehensive analysis is possible for scroll compressors. Examples are available of

• hermetic scroll compressor
• hermetic scroll compressor w/ vapor injection
• hermetic scroll compressor w/ discharge valve

Examples are also available of

• reciprocating compressor
• piston expander

• Try me on binder

• Build status on TravisCI:

• The documention is available on ReadTheDocs:

To setup a conda environment with the requirements, you can do move into the root folder of pdsim and do:

conda env create -f conda_environment.yml

And then to install PDSim

pip -vvv install .