Current research projects

Image Pulse-Tube-Refrigerator with sealed compressor
Image Reduction of primary noise sources of fans
Image Refrigerants, lubricants and mixtures
Image High Capacity Pulse Tube Cooler
Image Electrochemical decontamination of electrically conducting surfaces „EDeKo II“
Image Cool Up
Image Innovative cryogenic cooling system for the recondensation / liquefaction of technical gases up to 77 K
Image In-situ investigation concerning the swelling behaviour of polymer materials under elevated pressures and temperatures
Image CFE-Test of Cooker Hoods
Image Electrical components in refrigeration circuits
Image Panel with indirect evaporative cooling via membrane
Image Cryostats, Non-Metallic and Metallic
Image Corrosion inhibitor for ammonia absorption systems
Image Laseroptical measurement
Image Software for test rigs
Image Testing of mobile leak detectors according to DIN EN 14624

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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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Low noise and non metallic liquid-helium cryostat

Low-noise Magnetic Field Cryostat for SQUID-Applications

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Cryostats, Non-Metallic and Metallic

position indenpendent, highest endurance, tiltable for liquid helium and liquid nitrogen

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Calibration of Low Temperature Sensors

According to the comparative measurement method

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High Capacity Pulse Tube Cooler

for Cryogenic High-Power Applications