Current research projects

Innovative cryogenic cooling system for the recondensation / liquefaction of technical gases up to 77 K

Certification of efficient air conditioning and ventilation systems through the new "indoor air quality seal" for non-residential buildings

Ice Slurry Generation

Calibration leak for the water bath leak test

Air-flow test rig for fan characteristic measurement

Overall System Optimization of Refrigeration Plant Systems for Energy Transition and Climate Protection

Multifunctional electronic modules for cryogenic applications

Range of services laboratory analyses

Behavior of multiphase cryogenic fluids

Software modules

Hydrogen and methane testing field at the ILK

Lifetime prediction of hermetic compressor systems

Air-water heat pumps

Tribological investigations of oil-refrigerant-material-systems

Computational fluid dynamics CFD

Investigation of coolants

You are here: Home / Testing Equipment

Innovative small helium liquefier

EuroNorm GmbH (BMWi)

Dr. Erik Neuber

+49-351-4081-5122

send mail

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.

show full article