FIFTH PROJECT: A cryotrap for the purification of liquid helium designed with DSM 5Follow article
My fifth project is an essential part of the liquid helium purification line.
On its way to the liquefier, where it will be turned into -269 deg Celcius (4 Kelvin) liquid, helium gas has to be purified from contaminants such as humidity, CO2, CO, hydrogen, oxygen, etc. Part of this purification process is done in a specially designed cryotrap, filled with both liquid nitrogen (-197 deg celsius) and molecular sieve (zeolites).
The trap is part of the Helium Liquifier, located at the Quantum Materials & Design Lab, at FORTH-IESL, Heraklion, Crete, Greece (Dr. Alexandros Lappas).
This is a dewar vessel, separated into three sections, a vacuum, liquid nitrogen, and a zeolite. The outer section contains the vacuum and insulates the cold heart of the trap from the ambient environment. On the cold walls of the mid-section, the contaminant molecules are frozen but not the helium ones (they do at a lower temp). The heart of the trap is a cylinder filled with porous material that serves as an extra filter for remaining contaminants.
All parts designed with DesignSpark Mechanical 5. Tools practiced: sliced image, transparency, image projection on the surface, various types of cuttings, blend tool, floating 2D text.