With many models of liquid nitrogen generator available offering different production levels, the LN6 is a mid-range system offering 6 litres of liquid nitrogen production per day or 0.25 litres per hour.
This technology has huge implications for industrial, medical and laboratory applications, removing the need for liquid nitrogen tanker deliveries, which as well as being inconvenient, drive up costs and create potential problems with evaporation and contamination. The control system used gives operators all the information necessary to ensure an efficient and consistent supply of liquid nitrogen and nitrogen gas are always available. From the process to flow and alarms, including automatic operation, trend graphs, service alarm and service records page, there is no other liquid nitrogen system quite like this!
Interest in the generators, which convert gas to liquid via a cooling mechanism, has grown since Homerton University Hospital (United Kingdom) bought one for its fertility centre, where liquid nitrogen is used to freeze and store sperm, eggs and embryos.
Another advantage of the generators, which pay for themselves in two years, is the ease they afford those working in remote or hard-to-reach areas.
Manufactured in the UK for Asynt by Noblegen automation.
The Noblegen liquid nitrogen generator systems work by extracting nitrogen from the atmosphere and filtering it through a molecular sieve.
The generators, which are also available in 10, 20, 40 and 120 litre versions, lower the temperature of the gas to -196 degrees, converting it to a liquid.
Details for the LN60:
Enclosure weight: 200kg (on wheels)
Dewar Volume: 35 litres
Cold head assembly: 1 x CH-104
Helium compressor: 1 x HC-4A (air cooled or water cooled option)
Electrical input options: 1 phase: 200v, 220v, 230/240v 50Hz, 220v 60Hz
Power consumption: 3.0kw @ 50Hz / 3.4 kw @ 60Hz
Ambient temperature range: +4oC to +32oC
Maximum altitude: 10,000 feet (3,000 metres) – higher altitudes available
Compressed air requirement: Internal oil-free compressor included
Noise level: <65dBA @ 1 metre
Control system: HMI colour graphic touch screen
Tank level high/low setting: Adjustable 0-100%
Liquid nitrogen pressure: 1 bar g )1.5 bar g relief valve)
Main features: Dewar Vacuum Protection System. Oxygen analyser with alarm.
Certification: Dewar – EN 13458 /97/23/EC; System – CE / ISO9001:2008
LN10: 10 L/day (0.42L/hr)
1600 x 1200 x 600 mm (H x W x D) 150kg
LN20: 20 L/day (0.83 L/hr)
1600 x 1200 x 600 mm (H x W x D) 200kg
LN40: 40 L/day (1.70 L/hr)
1600 x 1200 x 800 mm (H x W x D) 300kg
LN60: 60 L/day (2.5 L/hr)
1600 x 1200 x 800 mm (H x W x D) 350kg
LN120: 120 L/day (5.0 L/hr)
1800 x 1800 x 800 mm (H x W x D) 450kg