Method for determining diffusion coefficient and distribution coefficient of sink material
A technology of diffusion coefficient and distribution coefficient, applied in the field of indoor environment inspection, can solve the problems of low test accuracy, multiple model solutions, long test time, etc.
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[0018] The method proposed by the present invention can quickly and accurately measure the VOC diffusion coefficient D in the sink material m and distribution coefficient K are two key adsorption parameters. The method is described in detail in conjunction with the accompanying drawings and examples as follows:
[0019] Experimental test systems such as figure 1 As shown, the sink material 4 to be tested is placed in the direct flow chamber 5. During the experiment, the VOC gas 1 with a constant concentration is mixed with the pure air 3 through the valve 2, and then passes into the direct flow chamber 5, and is absorbed by the sink material 4 in the environmental chamber 5. After the process, it is discharged from the air outlet 7, and 6 is a control chamber, which is used to control the temperature and relative humidity of the direct current cabin 5; the direct current cabin used in the experiment is a 50L stainless steel rectangular cabin designed in accordance with the AST...
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