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Performance tests of condensing units

Range of services laboratory analyses

Thermostatic Expansion Valves

Electrochemical decontamination of electrically conducting surfaces „EDeKo II“

Performance tests of refrigerant compressors

Modular storage system for solar cooling

Ionocaloric cooling

Intelligent innovative power supply for superconducting coils

Low Temperature Measuring Service

Hydrogen and methane testing field at the ILK

In-situ investigation concerning the swelling behaviour of polymer materials under elevated pressures and temperatures

Reduction of primary noise sources of fans

Cryostats, Non-Metallic and Metallic

Low noise and non metallic liquid-helium cryostat

Lifetime prediction of hermetic compressor systems

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Innovative small helium liquefier

EuroNorm GmbH (BMWi)

Dr. Erik Neuber

+49-351-4081-5122

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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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