Is the amount of gas leakage related to the type of gas?
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Is the amount of gas leakage related to the type of gas? For example, if N2 leaks at a rate of 1 m3 per hour under conditions of 20 degrees and 0.1 MPa in a pipeline, then what is the leakage rate for propylene under conditions of 45 degrees and 2.2 MPa?
It must be related to the airtightness of the equipment
With the same equipment but different gases, the leakage rate is related to pressure and temperature
It must be related to air pressure, haha; it probably has little to do with the type of gas, after all, the distance between molecules in different gases is quite large
There is a book that discusses this issue; it was written by a foreigner. Go and look for it
It should have nothing to do with the type of gas; it’s mainly related to pressure and temperature
It should have nothing to do with the type of gas; it’s mainly related to pressure and temperature
1. Diffusion is the slowest yet most critical step in the gas permeation process; when the same gas passes through different materials, the amount of gas that permeates depends mainly on the diffusion coefficient of the gas within that material. 2. The diffusion coefficient D is related to temperature; the higher the temperature, the more vigorously the polymer chains move, and the easier it is for gas molecules to diffuse, so the diffusion coefficient D increases as temperature rises. The relationship between the diffusion coefficient D and temperature follows the Arrhenius formula. In this formula, ΔEa represents the diffusion activation energy, which increases as the diameter of the gas molecules increases. Even small changes in the molecular diameter can lead to a significant increase in ΔEa, thereby making it more difficult for the molecules to diffuse. Table 1 lists the diameters of several gas molecules with relatively high concentrations in the air. Tests have shown that for the same type of rubber, the oxygen permeation rate is approximately 4 times that of nitrogen, while the carbon dioxide permeation rate is about 8 times that of nitrogen. 4. Another factor is the effect of voltage division, which is relatively easy to understand; the main factor here is still pressure
It has nothing to do with the type, only with temperature and pressure.
It must be related to pressure and temperature