| 摘要 |
PURPOSE: To effectively change the composition of gas in a sealed space by changing the composition of first gas from a space through a pressure swing adsorption system, returning that gas to the space, changing the composition of second gas from the outside of the sealed space and moving that gas to the sealed space. CONSTITUTION: The first gas having the first composition is supplied from sealed spaces 10 and 11 such as the inside of an aircraft to a pressure swing adsorption system 23. Then, the composition of the first gas is changed by this system 23 and that changed gas is supplied to the sealed spaces 10 and 11. Further, the said supply of the first gas to the pressure swing adsorption system 23 is stopped, and the second gas having the second composition is supplied from the outside of the sealed spaces 10 and 11 to the pressure swing adsorption system 23. Then, the composition of the second gas is changed and that changed second gas is supplied to the sealed spaces 10 and 11. In this case, the first gas is air recycled from the sealed spaces 10 and 11 and the second gas is air introduced from an external pressurized air source. |
