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The LN2/LHe Facility was established in June of 1975 expressly
for the purpose of supporting research at the University of Wisconsin - Madison Campus.
Our location is on the College of Engineering Campus - Engineering Hall.
Our yearly cryogen sales are approximately 56,700 liters of LHe and 8,000 liters of LN2.
Other Services Supplied: Helium Gas Recovery, Cryogenic Consulting and Helium Leak Detection.
We support over 700 researchers on the UW Campus with LHe.
NOTES:
BILLINGS:
We do not accept checks, or credit cards.
GENERAL:
We are not affiliated with the UW Materials Distribution Services (MDS)!
We do not fill party balloons!
We do not consult regarding "Cryonics". . . Please do not ask!
IMPORTANT:
Helium is a non-renewable resource. The world is running out. Learn about helium recovery.
LN2/LHe FACILITY CHARGES:
Please Note:
"LN2" means Liquid Nitrogen
"LHe" means Liquid Helium
"Internal" means U.W. Users
"External" means Non-U.W. Users ~ A company in the immediate Madison area,
or visitors to the UW. Either must be supporting research at, or through the UW.
LIQUID NITROGEN:
Internal:
Less than 160 liters per transfer: $2.00/Liter (LN2 not transferred into a 160 liter dewar)
160 Liter Dewar: $64.00
180 Liter Dewar: $72.00
External:
Less than 160 liters per transfer: $3.00/Liter (LN2 not transferred into a 160 liter dewar)
160 Liter Dewar: $96.00
180 Liter Dewar: $108.00
General Information:
Minimum Volume Billed: 3 liters in a given month
All quantities are billed in 1 liter increments!
Self Service at the LN2 Facility
We Do Not Deliver LN2 Dewars!
We Do Not Rent LN2 Dewars!
LIQUID HELIUM: Rates effective October 1, 2011
LHe:
Internal: $8.50/Liter
External: $12.50/Liter
Dewar Rental:
Internal: $6.00/Day
External: $8.91/Day
Dewar Delivery Charges:
INSIDE a four mile radius from the Facility:
Internal Rate: $6.50/Delivery (Includes dewar return)
External Rate: $9.66/Delivery
OUTSIDE a four mile radius from the Facility:
* Deliveries and Returns are charged separately at a Minimum Rate of One Hour.
Internal Rates:
Delivery: $65.00/Hour
Return: $65.00/Hour
External Rate:
Delivery: $130.00/Hour
Return: $130.00/Hour
Emergency Delivery Charges *:
* Emergency Deliveries are charged a Minimum Rate of One Hour.
Internal:
Same Day - During Regular Working Hours: No Charge
Same Day - AFTER Regular Working Hours: $65.00/Hour
Weekends: $85.00/Hour
Holidays: $100.00/Hour
External:
Same Day - During Regular Working Hours: Appropriate Delivery Charge Applies
Same Day - AFTER Regular Working Hours: $130.00/Hour
Weekends: $150.00/Hour
Holidays: $165.00/Hour
Contaminated Dewar Charges*:
*Against the full volume of the dewar.
Returned empty, but cold (77K, or lower): Plus 25% of full volume
Returned warm (above 77 K), or with a valve left open: Plus 45% of full volume
Consulting Rates* (Cryogenics and Helium Leak Detection):
* Consulting Rates are charged a Minimum Rate of One Hour per LHe Facility Staff Member.
During Regular Working Hours:
Internal: $75.00/Hour/LHe Facility Staff Member
External: $150.00/Hour/LHe Facility Staff Member
Emergency Consulting:
Internal:
After Regular Hours: $85.00/Hour/LHe Facility Staff Member
Weekend Hours: $90.00/Hour/LHe Facility Staff Member
Holidays: $100.00/Hour/LHe Facility Staff Member
External: Call for Charges
LN2/LHe FACILITY EQUIPMENT DATA:
LN2 FACILITY:
LN2 Storage Tank: (LN2 Supplier: Airgas)
Capacity: 9200 gallons
Operating Pressure: 50 p.s.i.g.
Transfer Lines: (Maximum Flow Capacity @ 1500 Liters/Day)
Rigid Vacuum Jacketed (By: Minnesota Valley Engineering): 60 Feet Long
Flexible Vacuum Insulated (By: Vacuum Barrier): 600 Feet with Two User Stations, but expandable for a Third User.
In-house LN2 Manifold:
Two Station: This system is all Self-Service and User Friendly.
LHe FACILITY:
Helium Liquefier/Refrigerator:
Being Replaced
Liquefier Capacity (with LN2 Precooling):
XX Liters/Hour LHe with Pure Helium
XX Liters/Hour LHe with the Purifier on Recovered Helium
Purifier Capacity (with LN2 Precooling):
Removes Impurities Totaling Up To 20%
Rotary Screw Compressor (By: Linde LLC):
Motor: 60 Hz, 3 phase, 460 volt, 90 kW
Compressor Throughput Capacity: 220 scfm, or 17.5 grams/sec.
Helium Recovery Compressor (By: Sauer Compressors USA):
Model WP 4341, Air-cooled (3 each):
Motor: 60 Hz, 3 phase, 480 volt, XX horsepower
Compressor Throughput Capacity: XX scfm @ XXXX psig
LHe Dewar Capacities (Outer Shell Construction):
Storage Dewars Facility Storage Only :
One 1,000 Liter (To operate with the liquefier.)
Three @ 500 Liters/each (Carbon Steel - In Storage)
Service Dewars User Service:
Three @ 500 Liters/each (Stainless Steel)
Six @ 250 Liters/each (Stainless Steel)
Eleven @ 100 Liters/each (Stainless Steel)
Ten @ 65 Liters/each (Two Aluminum & Four Stainless Steel)
Two @ 58 Liters/each (Carbon Steel)
Four @ 35 Liters/each (Stainless Steel)
In-house Recovery Bag Capacity (By: FlexiLiner Corp.):
One bag @ 1500 ft.3
Helium Storage:
Pure : 51,668 ft.3 @ 70oF & 3000 p.s.i.g. (In Six new 4,000 p.s.i.g. ASME tubes)
Recovered: 112,632 ft.3 @ 70oF & 3,300 p.s.i.g. (In Twelve new 4,000 p.s.i.g. ASME tubes)
Pure Helium Supplier: Linde LLC
Purity as delivered: 99.999%
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