Current research projects

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Image Low Temperature Tribology
Image High temperature heat pump
Image Influenced melting point of water by magnetic field
Image Low noise and non metallic liquid-helium cryostat
Image Cold meter
Image Software for test rigs
Image Verification of storage suitability of cryo tubes
Image Tensile and compression testing
Image Thermostatic Expansion Valves
Image Air-flow test rig for fan characteristic measurement
Image In-situ investigation concerning the swelling behaviour of polymer materials under elevated pressures and temperatures
Image CFE-Test of Cooker Hoods
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Image Calibration leak for the water bath leak test
Image Performance tests of condensing units

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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

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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

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Software modules

Software for properties of refrigerants

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Verification of storage suitability of cryo tubes

Artificial aging of primary packaging for biobanking applications

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Preformance measurements of heat exchangers

Is the heat exchanger properly sized?

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Innovative small helium liquefier

Liquefaction rates from 10 to 15 l/h