The calculation of the insulation thickness of a cryogenic container is usually based on factors such as the thermal conductivity of the insulation material, the temperature difference between the inside and outside of the container, and the desired insulation effect. The following is a commonly used formula:
Insulation thickness L = (T1 – T2) / (k × Δ T_max)
Thereinto:
L is the thickness of the insulation layer (unit: meters)
T1 is the temperature of the inner surface of the container in degrees Celsius
T2 is the desired temperature (in degrees Celsius) on the outer surface of the container
k is the thermal conductivity of the insulation material (unit: W/m·K), which is usually provided by the manufacturer of the insulation material
Δ T_max is the maximum permissible temperature difference in degrees Celsius, depending on the specific insulation requirements and application scenario
It should be noted that the above formula is a simplified calculation model, and the actual insulation thickness calculation may need to consider more factors, such as the shape, size, use environment, thermal resistance of the insulation material, etc. Therefore, in practical application, it is recommended to carry out detailed engineering calculations and designs according to the specific situation.
In addition, for cryogenic containers, the design of the insulation layer needs to consider not only the thickness, but also the type, structure, installation method and other factors of the insulation material to ensure that the container has good thermal insulation performance and service life.
