The Forschungszentrum Jülich requires about 170,000 liters of Liquid Helium (LHe) each year. Purchasing such large quantities is more uneconomical than reliquefying the used LHe. Therefore various experiments are connected to a widely ramified helium-transferline system. At the experiments, the evaporated helium is picked up and directed through transferlines back to the liquefaction system where at first it is stored in a gas tank. By running through several filtration and purification processes the helium liquefaction takes place. Stored in special tanks, the liquefied helium is ready for use for the clients.
The high demand for helium prompted the Forschungszentrum Jülich to opt for the L140 standard liquefier system of Linde Kryotechnik AG to increase the liquefaction capacity.