Cryogenic Liquid Helium (LHe) Vessels
Cryogenic liquid helium (LHe) vessels are highly specialized pressure containers designed to store liquid helium at its boiling point of -452°F (-269°C), just 4 degrees above absolute zero. These vessels require the most advanced insulation systems available to minimize heat leak at these extreme temperatures.
Why are Cryogenic Liquid Helium (LHe) Vessels Needed?
Liquid helium vessels are essential for applications requiring the coldest temperatures achievable with cryogenic liquids. LHe is critical for cooling superconducting magnets in MRI machines, particle accelerators, and research facilities. The extremely low boiling point and high cost of helium make superior vessel insulation crucial.
Cryogenic Liquid Helium (LHe) Vessels Applications
Common applications include:
- MRI and medical imaging systems
- Superconducting magnet cooling
- Particle physics research
- Quantum computing systems
- Space simulation chambers
- Low-temperature physics research
Cryogenic Liquid Helium (LHe) Vessels Specifications
At Roben, Mfg, Inc., we offer comprehensive options including:
- Operating temperature: -452°F (-269°C) at 1 atm
- Capacities from 25 liters to 10,000+ liters
- Multi-layer super-insulation (MLI) systems
- Vapor-cooled radiation shields
- Daily evaporation rates as low as 0.3%
Certifications and Standards
Our cryogenic pressure vessels are designed and manufactured in accordance with stringent industry standards:
- ASME Section VIII Division 1 & 2: Pressure vessel design and fabrication standards
- ASME Section IX: Welding procedures and qualifications
- CGA Standards: Compressed Gas Association requirements for cryogenic vessels
- NBIC: National Board Inspection Code compliance
- DOT/TC: Department of Transportation certification for transport vessels
- U Stamp & R Stamp: ASME certification for new construction and repairs
Cryogenic Liquid Helium (LHe) Vessels Frequently Asked Questions (FAQs)
Why do helium vessels require special insulation systems?
At -452°F, the temperature differential from ambient is approximately 520°F, creating enormous heat transfer potential. Even small heat leaks cause significant helium boil-off. Our LHe vessels use multiple vapor-cooled shields, high-performance MLI, and optimized support structures to minimize heat leak to less than 1 watt for large vessels.
What is the typical daily evaporation rate for helium vessels?
Daily evaporation rates for our LHe vessels range from 0.3% to 2% depending on size and design. Larger vessels achieve lower rates due to better surface-to-volume ratios. Our advanced designs incorporate vapor-cooled shields that use the enthalpy of escaping helium vapor to intercept heat before it reaches the liquid.
Can helium vessels be designed for transport applications?
Yes, we fabricate liquid helium transport dewars for delivery applications and portable research use. Transport vessels include robust vacuum jackets, shock-resistant supports, and appropriate safety devices. DOT/TC certification is available for highway transport of liquid helium.
Contact Roben, Mfg, Inc.
For more information about our cryogenic insulated pressure vessel solutions or to request a quote, please contact Roben, Mfg, Inc. today. Our experienced engineering team is ready to assist you in developing the perfect solution for your unique cryogenic application requirements.
Phone: (732) 364-6000 | Email: sales@robenmfg.com
760 Vassar Ave, Lakewood, NJ 08701
