When choosing a cryogenic vessel, the parameters and relevant information to consider include the following:
Design Temperature:
The design temperature of a cryogenic container is usually determined based on the nature of the substance being stored. For example, liquid nitrogen, liquid oxygen, etc., need to be stored at extremely low temperatures, so the temperature range of cryogenic containers is generally between -196°C and -80°C. For the storage of medical materials such as human tissues and cells, the temperature range needs to be between -80°C and -130°C.
Design Pressure:
The design pressure of the cryogenic vessel is also one of the important parameters. The inner cylinder pressure is generally medium pressure, and the jacket design pressure is -0.1MPa. Depending on the specific use scenario and needs, the appropriate design pressure range needs to be selected.
Material Selection:
The material of the cryogenic container has a direct impact on its corrosion resistance, strength and service life. Common materials include stainless steel, aluminum alloy, low-alloy steel, nickel alloy, low-temperature steel, fiberglass, titanium alloy, and copper alloy.
Stainless steel has excellent corrosion resistance, strength and service life, and is suitable for high cleanliness and durability.
Aluminum alloy material has good thermal conductivity, light weight and easy processing, suitable for small and medium-sized liquid nitrogen tanks.
Materials such as low-alloy steel and nickel alloy have good mechanical properties and toughness, which are suitable for cryogenic pressure vessel manufacturing.
Low-temperature steel is one of the most commonly used materials for the manufacture of low-temperature pressure vessels, with good strength and toughness.
Capacity & Specifications:
Choose the right capacity and size based on your storage needs. For example, cryogenic storage tanks for sample stocks require a capacity of more than 20 litres, and for large storage volumes, larger diameter containers need to be selected for easy access. In addition, the configuration of storage equipment, such as baskets, needs to be considered to meet specific usage needs.
Other parameters:
In addition to the above parameters, other factors need to be considered, such as the sealing performance of the container, thermal insulation performance, safety, etc. These parameters are essential to ensure the proper functioning of cryogenic containers and the safety of stored substances.
When summarizing the above parameters, they can be summarized as follows:
Temperature & Pressure: Select the appropriate design temperature and design pressure range according to the properties of the stored substance.
Material: Choose the right material according to the use scenario and needs to ensure the corrosion resistance, strength and service life of the container.
Capacity and specifications: Select the appropriate capacity and specifications based on your storage requirements, as well as the corresponding storage device configuration.
Other parameters: Consider the sealing performance, heat preservation performance and safety of the container to ensure the normal operation of the cryogenic container and the safety of the stored substance.
By considering the above parameters and factors, we can select a cryogenic container that is suitable for the specific use scenario.
