CRYOGUY Education in Cryogenics
HYDROGEN LIQUEFACTION WITH A HELIUM BRAYTON CYCLE
HYDROGEN LIQUEFACTION WITH A HELIUM BRAYTON CYCLE
As hydrogen technology becomes more and more popular, this session introduces to hydrogen liquefaction for small and middle size machines.
Whom for?
Persons who plan to get into the hydrogen liquefaction activity.
Each participant brings his/her PC loaded with the REFPROP® software. Participants must be familiar with Excel®.
How long?
This educational session takes place within a five-day period (total time is around 35 hours).
PROGRAMME
  • A few general reminders on cryogenics
  • Heat exchanger theory
  • Brayton cycles
  • Liquid nitrogen pre-cooling
  • Brayton cycle for liquefaction of hydrogen
  • Helium compression with oil lubricated screw compressor
  • Final oil removal
  • Heat exchanger technology
  • Cryogenic expansion turbines
  • Process control
  • Some practical aspects on transient situations
  • Why and how a gas is polluted
  • Helium and hydrogen purification by adsorption
  • Helium and hydrogen analysis
  • Simple thermodynamical calculations on helium and hydrogen (number of attendees limited to 10)
Visit of a local cryogenic helium plant