| 摘要 |
The invention relates to an apparatus for controlling the composition of gases within a cargo container. The apparatus includes at least one sensor, at least one controller and at least one gas permeable membrane being adapted to facilitate the passage there through of different parts of gasses at different rates. A first region and a second region, the first region being for holding cargo and the second region defining a gas buffer region, said at least one inlet and/or outlet being in communication with said buffer region, said membrane being adapted to allow oxygen and carbon dioxide to flow through it, provided that the direction of the flow of oxygen is opposite that of the carbon dioxide, wherein the membrane has a permeability for carbon dioxide, which is at least eight times higher than the permeability for oxygen. The invention further relates to a method.
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