Experiment of N2O4 Leakage and Diffusion in A Closed Space

Abstract

The paper, by experiment of physical simulation, researched the leakage and diffusion law of N2O4 in a specific closed space. To simulate N2O4 leakage, the experiment pumped a certain amount of N2O4 gas into a specific space from a simulated leak point. And some electrochemical sensors were used to detect the concentration of N2O4 gas in some places in the space. The result showed that N2O4 diffused in the space, and the sensors facing to and near to the leak point sensed N2O4 gas at first. In the beginning, N2O4 diffused faster in the places below than above, and the bigger the leakage amount, the higher the concentration. After a while, N2O4 gas got even by diffusion, and the bigger the leaked amount was, the bigger the even concentration. If the environmental temperature was high, the even concentration in the lower part was higher a bit than that in the upper part. And the specific distribution of concentration was decided by the shape of the space.