| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To make it possible that carbon dioxide gas generated by human body in a closed room can be removed with an oxygen enrichment closed room system, in which operation of an oxygen enrichment membrane unit can be continued without stopping, even when carbon dioxide gas collected in a carbon dioxide gas removing device reaches a predetermined amount and performance of the device for carbon dioxide gas removal is decreased. <P>SOLUTION: The oxygen enrichment closed room system is provided with the oxygen enrichment membrane unit 5 for enriching oxygen concentration in the air, carbon dioxide gas removal devices 15 and 16, operation of which can be switchable to remove carbon dioxide gas in the air under the process of oxygen enrichment, a closed room 21 into which oxygen-enriched air is blown from either one of carbon dioxide gas removal devices 15 and 16, and the carbon dioxide gas removal device 31 to remove atmospheric carbon dioxide gas in the closed room 21. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
