Current research projects

Image Tensile and compression testing
Image Modular storage system for solar cooling
Image Low temperature – test facilities
Image Performance tests of refrigerant compressors
Image Helium extraction from natural gas
Image Heat2Power
Image High Capacity Pulse Tube Cooler
Image Laseroptical measurement
Image Energy efficiency consulting - cogeneration systems
Image Preformance measurements of heat exchangers
Image Characterisation of Superconductors in Hydrogen Atmosphere
Image Innovative cryogenic cooling system for the recondensation / liquefaction of technical gases up to 77 K
Image Investigation of materials
Image Calibration of Low Temperature Sensors
Image Overall System Optimization of Refrigeration Plant Systems for Energy Transition and Climate Protection
Image Reducing the filling quantity

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Innovative small helium liquefier

EuroNorm GmbH (BMWi)

Dr. Erik Neuber

+49-351-4081-5122

Liquefaction rates from 10 to 15 l/h

The goal of the R & D project is to explore new innovative ways to develop the functional model of a "helium liquefier for the small liquefaction rate". The development of such a system should cover the still non-existent area of the market.

 

This liquefier should contain several innovations and technical solutions:

  • Development of a helium liquefaction system with a liquefaction rate of 10 - 15 liters per hour of liquid helium.
  • Development of an innovative pre-cooling stage, which works with a mixture of helium and refrigerants as working fluid.
  • Detailed investigation of an innovative helium cycle within the development of the helium small liquefier with the ability to operate in different operating regimes: helium liquefaction, cooling and temperature stabilization/control.
  • Operation of the condenser with a liquefaction rate that can be varied over a wide range - between 75% and 100%.

Currently, the functional design of the helium small liquefier is being set up. The figure shows a 3D model of the cold box, in which all heat exchangers and cold valves are mounted. In the upper part of the cold box, two prototypes of low flow helium turboexpanders are mounted. All external components, piping and condenser control system are located on the front of the cold box.


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Further Projects

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Development of a Cryogenic Magnetic Air Separation Unit

Oxygen Enrichment by Applied Cryogenic Magnetohydrodynamics

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Software for test rigs

Individual software for complex tests and evaluation

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Brine (water)-water heat pump

Test according DIN EN 14511 and 14825

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High temperature heat pump

Using waste heat from industrial processes

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Air-water heat pumps

Test according DIN EN 14511 and 14825