The laboratory liquid nitrogen generator adopts the cryogenic mixed refrigerant throttling refrigeration technology from the Technical Institute of Physics and Chemistry, Chinese Academy of Sciences. It features a skid-mounted design with a compact structure, enabling continuous and convenient supply of liquid nitrogen, making it suitable as a small-scale liquid nitrogen supply source within a specific area. The system consists of an air compressor, refrigerated dryer, filters, nitrogen generation host, and buffer tank. Nitrogen generators are non-standard equipment, and the prices of components such as air compressors, refrigerated dryers, and tanks vary by brand. Using excessively cheap supporting equipment can also affect the overall service life.

Common Issues with Domestic Laboratory Liquid Nitrogen Generators

1. Why are liquid nitrogen generators not available off the shelf?

All pressure vessels have a limited service life, and their usage requires reporting and registration. Equipment available off the shelf indicates that it has been produced and stored for some time, which can affect its actual service life.

2. Why is your liquid nitrogen generator more expensive than others?

The nitrogen generator system consists of an air compressor, refrigerated dryer, filters, nitrogen generation host, and buffer tank. Nitrogen generators are non-standard equipment, and the prices of components such as air compressors, refrigerated dryers, and tanks vary by brand. Using excessively cheap supporting equipment can also affect the overall service life.

There is a *difference between using a 500,000 RMB unit for 8 years and a 400,000 RMB unit for 5 years.

3. Why is the gas output of liquid nitrogen generators affected by altitude?

The gas source for the liquid nitrogen generator, the PSA nitrogen generator, operates on the principle of pressure swing adsorption to separate nitrogen and oxygen from the air. At higher altitudes, the air is thinner, resulting in less nitrogen extracted from the air. Therefore, the performance of nitrogen generators is related to altitude.