Advanced 4.5K Helium Liquefaction Unit by Fullcryo - Leading China Suppliers & Factory Solutions
Product Description
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.
Product Parameters
| HELIUM REFRIGERATOR SERIES | FHLR-40 | FHLR-70 | FHLR-100 | FHLR-140 | FHLR-180 | FHLR-240 | FHLR-280 | FHLR-400 |
|---|---|---|---|---|---|---|---|---|
| COOLING CAPACITY W | 160 ~250 | 250~320 | 320~450 | 450 ~580 | 580~750 | 750 ~900 | 900 ~1000 | 1000 ~1800 |
| COMPRESSOR RATED POWER KW | 75~90 | 90~132 | 132~160 | 160~200 | 200~250 | 250~315 | 315~355 | 355~425 |
| HELIUM LIQUEFIER SERIES | FHL-40 | FHL-70 | FHL-100 | FHL-140 | FHL-180 | FHL-240 | FHL-280 | FHL-400 |
|---|---|---|---|---|---|---|---|---|
| LIQUEFACTION RATE L/H | 40~70 | 70~100 | 100~140 | 140~180 | 180~240 | 240~280 | 280~310 | 310~420 |
| COMPRESSOR RATED POWER KW | 75~90 | 90~132 | 132~160 | 160~200 | 200~250 | 250~315 | 315~355 | 355~425 |
Frequently Asked Questions
Helium Liquefaction Units are essential systems used to produce liquid helium, which is widely utilized in scientific research, medical technologies (like cooling MRI machines), and various high-tech industrial processes.
Turbo expanders are more efficient because they perform external work as the gas expands, extracting energy and lowering the gas temperature much more effectively than Joule-Thomson valves.
Helium reaches its liquefaction point inside the cold box at approximately 4.5 K (Kelvin), after going through multiple stages of compression, pre-cooling, and expansion.
The FHLR Refrigerator series offers a cooling capacity ranging from 160 W up to 1800 W, depending on the model chosen (from FHLR-40 to FHLR-400).
The FHL Helium Liquefier series supports a liquefaction rate from 40 L/H to 420 L/H, with compressor rated powers starting from 75 kW up to 425 kW.