| 摘要 |
A system and method that removes an unwanted gas or unwanted gases or volatile liquids from containers or spaces that have only one venthole. The unwanted gases are replaced by a desirable, usually inert gas. The containers may be filled with granular solids of any size or shape; the containers may be of any size or geometry. The method consists of a pump system that applies small pressure oscillations to the single vent hole. These oscillations compress and expand the gas in the container. The resulting gas displacements in the container generate vortices in the gas spaces between the granular solids which mix the gases, replacing the unwanted resident gas by a desirable gas. The theory is related to the dispersion in porous media. Experiments are presented that document the time needed for the washout of the unwanted resident gas.
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