ThermosysTM is now available through CU Aerospace.  Please visit their webpage for purchase, pricing, and support information.

Engineering support for ThermosysTM is provided through CU Aerospace.

Members of the ACRC will need to contact CU Aerospace regarding special licensing and access to ThermosysTM.

The Alleyne Research Group continues to work on challenging engineering problems relating to thermal-mechanical systems. If you have a challenging engineering problem that may be suitable for a sponsored research project, please contact Andrew Alleyne.

About ThermosysTM

The ThermosysTM Toolbox for MATLAB/Simulink® is a suite of simulation tools for analyzing the behavior of air-conditioning and refrigeration systems. It was developed at the University of Illinois at Urbana-Champaign through sponsorship by the Air-Conditioning and Refrigeration Center (ACRC).

Key Benefits include:

  • Nonlinear models suitable for simulation and control design of multi-phase fluid dynamics associated with subcritical air-conditioning and refrigeration systems
  • Capability to simulate transient dynamics, including startup-shutdown dynamics
  • Built-in refrigerant properties for R134a and R404A
  • Open architecture code suitable for customization

Transition to Air Force

ThermosysTM has been successfully transitioned for use by the United States Air Force Research Laboratory under the Small Business Innovative Research (SBIR) program.  This collaborative effort between the University of Illinois at Urbana-Champaign and PC Krause and Associates Inc. resulted in the creation of the AFRL Transient Thermal Modeling and Optimization (ATTMO) software.


Past and present graduate students who have contributed to the development of ThermosysTM include:

Brian Eldredge
Joseph Fasl
Michael Keir
Justin Koeln
Neera Jain
Bin Li
Tom McKinley
Herschel Pangborn
Bryan Rasmussen
Rajat Shah
Bryan Keating
Sarah Garrow
Sunny Sharma
Christopher Aksland

For more detailed information about Thermosys model development, visit the Publications page to access the MS and/or PhD theses of these students.