Current research projects

Image Test rigs for refrigeration and heat pump technology
Image Investigation of materials
Image Influenced melting point of water by magnetic field
Image Innovative cryogenic cooling system for the recondensation / liquefaction of technical gases up to 77 K
Image Electrical components in refrigeration circuits
Image Cold meter
Image Hydrogen and methane testing field at the ILK
Image Breakthrough Sensor for Adsorption Filters (BelA)
Image ZeroHeatPump
Image Micro heat exchangers in refrigeration
Image Energy efficiency consulting - cogeneration systems
Image Thermal engines
Image In-situ investigation concerning the swelling behaviour of polymer materials under elevated pressures and temperatures
Image Calibration leak for the water bath leak test
Image Innovative small helium liquefier
Image Heat2Power

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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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ZeroHeatPump

Performance management of small heat pumps without energy consumption

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Mass Spectrometer

Determining the composition of gas mixtures in the high or ultra-high vacuum range

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Tensile and compression testing

Determination of yield strength, tensile strength and elongation at break