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Image Air-flow test rig for fan characteristic measurement
Image Cryostats, Non-Metallic and Metallic
Image Pulse-Tube-Refrigerator with sealed compressor
Image Test procedures for electrical components
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Image Development of test methods and test rigs for stationary integrated refrigeration units
Image Measurement of insulated packaging
Image In-situ investigation concerning the swelling behaviour of polymer materials under elevated pressures and temperatures
Image Thermal engines
Image Computational fluid dynamics CFD
Image Optimizing HVAC operation with machine learning

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Behavior of multiphase cryogenic fluids

Matthias Schneider

+49-351-4081-609

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. In particular, two facilities for tests with nitrogen and helium in the two-phase region are being built or extended. These allow to investigate the boiling dynamics and to characterize and optimize special components in a wide range of parameters.
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

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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Controlled sub-cooling of products in freezing processes


Contact

Institut für Luft- und Kältetechnik - Gemeinnützige Gesellschaft mbH
Bertolt-Brecht-Allee 20, 01309 Dresden


Secretary to the Management

+49-351-4081-520

+49-351-4081-525

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