China Fullcryo 4.5K Helium Liquefaction Unit Suppliers | Advanced Claude Cycle Technology from Leading Factory

Compression

Helium Compressors: The helium gas is compressed to a high pressure using helium compressors. This initial compression is crucial for the subsequent cooling and expansion processes.

Pre-Cooling

Heat Exchangers: The compressed helium is pre-cooled using heat exchangers, which transfer heat from the helium to a cooler medium (often another cryogenic fluid like liquid nitrogen).

Expansion and Cooling

Turbo expanders: The pre-cooled helium is then expanded through turbo expanders, which lower its temperature significantly. Turbo expanders are more efficient than Joule-Thomson valves because they do work on the expanding gas, thus reducing its temperature more effectively.

Expansion through Joule-Thomson Valves: After turbo expansion, the helium undergoes further cooling through Joule-Thomson (JT) expansion valves to reach the final liquefaction temperature.

Heat Exchangers

Heat Exchangers: These are used to maximize the heat transfer efficiency between the high-pressure, warm incoming gas and the low-pressure, cold outgoing gas. This step is critical for improving the overall efficiency of the liquefaction process.

Liquefaction

Cold Box: The series of expansions and heat exchanges result in the helium gas reaching its liquefaction point at around 4.5 K. The liquefied helium is then collected in a storage dewar.