Liquefaction & Boil-Off Gas Management System

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Liquefaction & Boil-Off Gas Management System

Model # 2s102K, 2s132K, 2s226K, 2s241K, 2s362K

RIX Industries manufactures highly reliable, thermoacoustic Stirling (pulse tube) cryocoolers for gas liquefaction, boil-off gas management and bulk storage tank pressure control. These packaged liquefiers offer autonomous controls, storage tanks, vaporizers, boost compressors and cryogenic pump systems to meet the requirements of each specific application. RIX’s cryogenic systems operate in the 45-200K range, with rated capacities from a few watts to kilowatts, making them suitable for liquefaction of nitrogen, oxygen, argon and methane.
Description

Details

RIX’s cryogenic liquefiers are efficient, robust and maintenance free, making them ideal for onsite, point-of-use liquefaction of most gases anywhere electrical power is available. RIX offers custom packages designed to fit your specific application. The cryogenic coldheads are installed directly into the ullage space of an existing bulk storage tank or into a separate vacuum insulated condensing chamber. As gas comes in contact with the cold heat exchanger the condensing liquid falls to the pool below. In those applications requiring a separate condensing chamber, the liquid is transferred back to the storage tank via a pump or pressure build system. The cooling power can be manually adjusted or set to automatically maintain a certain system storage pressure.
Features

Features

The heart of RIX's long-life, no-maintenance technology is the resonant linear reciprocating motors. These have a unique wear-free bearing system, with unlimited life and pure single-axis motion. This eliminates contact between moving parts and associated lubrication requirements. RIX motors utilize an innovative interdigitating moving magnet design with robust coil-over-iron stators. They are recognized throughout the world as the premier linear reciprocating motor. Combine these with RIX’s unique thermoacoustic Stirling coldheads, with no moving parts, and you have a cryocooler that requires no maintenance and has very low vibration. Our variable frequency electronic controllers are matched to the resonant frequency of each cryocooler. This optimizes performance while minimizes power consumption. Sensors are provided to monitor vibration, motor temperature and main heat rejector temperature, shutting the system down if a problem is detected. The supply power is automatically modulated via a PID control loop, based on coldhead temperature, which maintains system temperature and pressure. This autonomy, along with a single push-button start, makes RIX liquefiers simple to use and allows unattended operation.

SYSTEM SPECIFICATIONS:

The liquefactions rates of our cryocoolers are dependent on the gas being liquefied, the temperature of the gas being liquefied, and the system pressure. The production rates (without heat exchanger losses) are estimated as follows:

Gas

300K Inlet Gas Temperature

Gas at Saturation Temperature

Methane

37 lt/hour

67 lt/hour

Oxygen

20 lt/hour

40 lt/hour

Argon

18 lt/hour

28 lt/hour

Nitrogen

22 lt/hour

50 lt/hour

 

Individual cryocooler specifications are as follows:

Cryocooler Model

2s102K

2s132K

2s226K

2s241K

2s362K

Approximate Capacities @ 77K (W)

7

28

140

190

800

Approximate Capacities @ 150K (W)

27

80

390

600

2,900

No load temperature (K)

50

45

37

50

40

Power consumption @ rated condition (W)

275

600

2,750

4,500

22,000

Electrical requirements

110Vac max., 1Φ, 60Hz

110Vac max., 1Φ, 60Hz

208Vac max., 1Φ, 60Hz

208Vac max., 1Φ, 60Hz

380Vac max., 1Φ, 60Hz

Maximum operating current (amps)

4.25

9

30

40

80

Ambient operating temperature

320-900F     (00-320C)

320-900F         (00-320C)

320-900F           (00-320C)

320-900F           (00-320C)

320-900F           (00-320C)

Maintenance Interval

None

None

None

None

None

Rejection method

H2O or Air

H2O or Air

H2O

H2O

H2O

Cooling flow rate (H2O)

1 liters/min

2 liters/min

10 liters/min

12 liters/min

50 liters/min

 

 

Specifications

Additional Information

Features

The heart of RIX's long-life, no-maintenance technology is the resonant linear reciprocating motors. These have a unique wear-free bearing system, with unlimited life and pure single-axis motion. This eliminates contact between moving parts and associated lubrication requirements. RIX motors utilize an innovative interdigitating moving magnet design with robust coil-over-iron stators. They are recognized throughout the world as the premier linear reciprocating motor. Combine these with RIX’s unique thermoacoustic Stirling coldheads, with no moving parts, and you have a cryocooler that requires no maintenance and has very low vibration. Our variable frequency electronic controllers are matched to the resonant frequency of each cryocooler. This optimizes performance while minimizes power consumption. Sensors are provided to monitor vibration, motor temperature and main heat rejector temperature, shutting the system down if a problem is detected. The supply power is automatically modulated via a PID control loop, based on coldhead temperature, which maintains system temperature and pressure. This autonomy, along with a single push-button start, makes RIX liquefiers simple to use and allows unattended operation.

SYSTEM SPECIFICATIONS:

The liquefactions rates of our cryocoolers are dependent on the gas being liquefied, the temperature of the gas being liquefied, and the system pressure. The production rates (without heat exchanger losses) are estimated as follows:

Gas

300K Inlet Gas Temperature

Gas at Saturation Temperature

Methane

37 lt/hour

67 lt/hour

Oxygen

20 lt/hour

40 lt/hour

Argon

18 lt/hour

28 lt/hour

Nitrogen

22 lt/hour

50 lt/hour

 

Individual cryocooler specifications are as follows:

Cryocooler Model

2s102K

2s132K

2s226K

2s241K

2s362K

Approximate Capacities @ 77K (W)

7

28

140

190

800

Approximate Capacities @ 150K (W)

27

80

390

600

2,900

No load temperature (K)

50

45

37

50

40

Power consumption @ rated condition (W)

275

600

2,750

4,500

22,000

Electrical requirements

110Vac max., 1Φ, 60Hz

110Vac max., 1Φ, 60Hz

208Vac max., 1Φ, 60Hz

208Vac max., 1Φ, 60Hz

380Vac max., 1Φ, 60Hz

Maximum operating current (amps)

4.25

9

30

40

80

Ambient operating temperature

320-900F     (00-320C)

320-900F         (00-320C)

320-900F           (00-320C)

320-900F           (00-320C)

320-900F           (00-320C)

Maintenance Interval

None

None

None

None

None

Rejection method

H2O or Air

H2O or Air

H2O

H2O

H2O

Cooling flow rate (H2O)

1 liters/min

2 liters/min

10 liters/min

12 liters/min

50 liters/min

 

 

Application Gas Liquefaction, Boil-Off Gas Management, Bulk Storage Tank Pressure Control
Customer Types Industrial, Navy, Shipboard
Gas Types Nitrogen, Oxygen, Argon, Methane
Required Power (HP) 460 VAC, 60 Hz, 3 Phase; 100 Amps (+/-)
Required Power (W) Rated capacities from a few watts to kilowatts
Standard Weight (kg) 6804
Standard Weight (lbm) 15000
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