Current research projects

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Image Cryostats, Non-Metallic and Metallic
Image Low noise and non metallic liquid-helium cryostat
Image Heat2Power
Image Cryogenic liquid piston pumps for cold liquefied gases like LIN, LOX, LHe, LH2, LNG, LAr
Image Refrigerants, lubricants and mixtures
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Image Air-water heat pumps
Image Test rigs for refrigeration and heat pump technology
Image Electrochemical decontamination of electrically conducting surfaces „EDeKo II“
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Image Energy efficiency consulting - cogeneration systems
Image Tribological investigations of oil-refrigerant-material-systems

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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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Combined building and system simulation

Scientific analysis of thermodynamic processes in buildings and its systems

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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?