TU Braunschweig - 10 years experience with R744

The Institute for Thermodynamics (IfT) is specialized on the theoretical and experimental analysis of high-pressure CO₂ systems, as well as on the design and optimization of R744 systems and components. It conducts studies on CO₂ Technology applied to different fields, such as vehicle cooling systems, residential heat pumps and refrigeration.

--image1--The IfT has developed user-specific software applications using C++ libraries for thermophysical data of solids and fluids, heat transfer and pressure drop correlations. It cooperates with universities and industry associations worldwide.

The IfT disposes of the following facilities and systems:

• Test rigs to measure efficiencies and visualize CO₂ components: i.e. compressors, accumulators, expansion devices
• Environmental test chamber for cycle analysis
• Object-oriented simulation platform for complex steady state and transient models of air conditioning, heat pump, and refrigeration systems
• Model library for components: e.g. accumulators, heat exchangers, compressors or expansion devices
• Graphic user interface for system definition and result demonstration based on QT libraries

Position

"The team of the "Institute for Thermodynamics", TU Braunschweig, has more than ten years of experience with different R744 applications. We believe that R744.com will take centre stage for questions around R744," emphasizes Dr. Nicholas Lemke.

Background

The institute's main research areas cover thermal systems, thermophysical data on working fluids, and thermodynamics. Under the current leadership of Prof. Dr. Jürgen Köhler, the main focus lies on the natural refrigerant CO₂.