Current research projects

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Image Test rigs for refrigeration and heat pump technology
Image Preformance measurements of heat exchangers
Image Electrochemical decontamination of electrically conducting surfaces „EDeKo II“
Image Panel with indirect evaporative cooling via membrane
Image Investigation of coolants
Image Testing of mobile leak detectors according to DIN EN 14624
Image Thermal engines
Image Certification of efficient air conditioning and ventilation systems through the new "indoor air quality seal" for non-residential buildings
Image IO-Scan - Integral measuring optical scanning method
Image High Capacity Pulse Tube Cooler
Image Low temperature – test facilities
Image Reducing the filling quantity
Image Innovative Parahydrogen Generator Based on Magnets
Image Pulse-Tube-Refrigerator with sealed compressor

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Behavior of multiphase cryogenic fluids

Matthias Schneider

+49-351-4081-5126

experimental und numerical investigations

With the help of this basic research project, processes that occur during the sudden evaporation of cryogenic media should be better understood, described and evaluated. This should create possibilities for improved design and efficient operation of safety elements and power transmitting components in plants with cryogenic media.
A well-founded theoretical understanding of the dynamic calculation and evaluation of boiling cryogenic media will be developed. In order to obtain, for example, a concrete component behaviour under cryogenic conditions, numerical descriptions are required beyond the design calculations, both for fluid dynamics and for the spatial and temporal change in temperature.
Parallel to this, the experimental basis for the design of complex cryogenic components and systems engineering is being improved.
The objectives and results of the preliminary research project include

  • Calculated parameters from various numerical simulations for essential cryogenic components
  • Extensive experimental results for variations of the underlying geometry, advantageous process control, improved design of components
  • Basic thermodynamic processes in gas chillers
  • Calculation algorithms for the description of dynamic heat transport phenomena
  • Evaluation of critical plant conditions
  • Suitable materials for cryostat components and cryogenic plants
  • Novel components e.g. for small helium mass flows

An application project for the development of heat exchangers for cryogenic multiphase fluids is planned.

Video of the mass transfer rate between the liquid and the vapour phase inside a Venturi tube

If you can not see the video, please use the external link to YouTube.


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Further Projects - Research and Development

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Performance tests of refrigerant compressors

Does your compressor perform well?

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Swirl-free on the move...

...with a contra-rotating fan

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Hybrid- Fluid for CO2-Sublimation Cycle

Cryogenic cooling by CO2 sublimation

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Optimizing HVAC operation with machine learning

Intelligent control of HVAC systems – high comfort with low energy demand

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Industry 4.0 membrane heat and mass exchanger (i-MWÜ4.0)

Linking the entire life cycle of a multi-functional air handling unit