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Cryogas a range of conditioning equipment which are used in various customer applications, ranging from simple vapor removal from liquid nitrogen vacuum jacketed pipelines, precise liquid pressure control to ensure a more efficient operation in your cryogenic system. Our conditioning equipment guaranteed a high quality single phase, low pressure liquid nitrogen supply to your process.
Every Cryogas conditioning equipment employs our in-house, proprietary, super insulation technology complemented with 10 years vacuum warranty for condensation-free and long-term performance. Cryogas products come in two options for vacuum insulation: static and dynamic vacuum types. To understand which vacuum insulation fits your needs, please click on the link “Dynamic Vacuum vs Static Vacuum.”
On top of that, Cryogas conditioning equipment comes with advanced close tolerance bayonet connections that guarantee frost and condensation-free operation, with the lowest heat leaks, preserving your cryogenic fluid at the lowest temperature and ensuring pressure stability. To understand our bayonet technology and how it will benefit your cryogenic system, please click on the link “Close Tolerance Bayonet Technology.”
Electronic, Semiconductor and MBE
Life Sciences in BioMedical, Pharmaceutical and Biotechnology
Food and Beverage
Aerospace
General Industrial
Laboratory – hospital, industrial and university, research institute
The liquid nitrogen is stored in a bulk storage tank at various saturation pressure, usually between 5 to 10 bars (80 to 150psi). The saturated liquid is drawn from tank and transferred via vacuum jacketed pipelines to the point of use (POU) at the production floor. Liquid nitrogen travels through the pipelines will picks up energy incrementally due of presence of heat leaks, surface friction and turbulence at bends. Depending on the amount of the energy absorbed, the liquid enthalpy increases and vapor is formed creating gas bubbles in liquid stream, resulting in 2-phase flow conditions as shown in diagram below. Appropriate conditioning equipment are used to remove the vapor from 2-phase liquid to provide users with single phase liquid supply.
Example: Liquid nitrogen latent heat of evaporation is 43 Watts-hr/liter and a typical heat leaks for a 200 meter run of 1.5″ VJ pipelines is summed up to about 300 Watts, which results in 7 liters of liquid nitrogen boil-off. Because a unit of liquid volume will evaporate into vapor volume between 100 to 600 times, it is very importance to place the conditioning equipment at appropriate interval along the pipeline to remove the vapor soon enought before the liquid in the pipeline turn into slug flow or wet vapor (mist flow).
There are few types of conditioning equipment available for use. The cryogenic process engineer will determine 2-phase flow conditions by quantifying the heat leaks amount and pressure drop within the pipelines. Proper equipment selection and choosing the right location to install in the pipeline will ensure LN2 transfer system works properly to deliver required liquid quality to each point of use (POU).
