Current research projects

Image Multifunctional electronic modules for cryogenic applications
Image Tribological investigations of oil-refrigerant-material-systems
Image Calibration leak for the water bath leak test
Image Software modules
Image Innovative cryogenic cooling system for the recondensation / liquefaction of technical gases up to 77 K
Image Laseroptical measurement
Image Investigation of materials
Image Low Temperature Measuring Service
Image In-situ investigation concerning the swelling behaviour of polymer materials under elevated pressures and temperatures
Image Test procedures for electrical components
Image Cool Up
Image Behavior of multiphase cryogenic fluids
Image Development of test methods and test rigs for stationary integrated refrigeration units
Image Measurements on ceiling mounted cooling systems
Image Software for test rigs
Image Heat2Power

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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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Heat2Power

Refining of fuel cell waste heat

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Reducing the filling quantity

How much refrigerant must be filled?

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Performance tests of condensing units

Does your condensing unit perform well?

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State of system and failure analyses

Cause of the failure unknown?