Current research projects

Image Industry 4.0 membrane heat and mass exchanger (i-MWÜ4.0)
Image Micro heat exchangers in refrigeration
Image High Capacity Pulse Tube Cooler
Image Innovative small helium liquefier
Image Mass Spectrometer
Image Measurements on ceiling mounted cooling systems
Image Pulse-Tube-Refrigerator with sealed compressor
Image Overall System Optimization of Refrigeration Plant Systems for Energy Transition and Climate Protection
Image Panel with indirect evaporative cooling via membrane
Image Thermostatic Expansion Valves
Image Performance tests of refrigerant compressors
Image Test method for high - temperature heat pump - oils
Image Innovative Manufacturing Technologies for Cryosorption Systems
Image Investigation of material-dependent parameters
Image 3D - Air flow sensor
Image IO-Scan - Integral measuring optical scanning method

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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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Electrical components in refrigeration circuits

High voltage tests under real conditions

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Influenced melting point of water by magnetic field

Controlled sub-cooling of products in freezing processes

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Non- invasive flow measurements

PDPA - flow fields and particle sizes

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Computational fluid dynamics CFD

Scientific analysis of flows