| 摘要 |
The invention relates to a method that enables the air tightness of an enclosed space to be determined in the most precise manner and without increasing expenditure. Said space is particularly suitable for use in the above mentioned inert gas fire extinction system. The invention relates to, in particular, a method in which the actual air tightness of the enclosed space can be determined, if required, at any particular time in an effective but simple manner without having to acquire a series of expensive measurements. According to the invention, a concentration gradient between the room air atmosphere of an enclosed space and the ambient air atmosphere is initially controlled, and in which the concentration of at least one component of the room air atmosphere, in particular oxygen, is adjusted to a value that is different from the corresponding value of the concentration of at least one component in the ambient air atmosphere. Subsequently, a concentration variation rate is determined in which the temporal modification of the concentration of at least one component is detected in the room-air atmosphere. Subsequently, an airtightness value of the enclosed space is calculated by taking into account the determined concentration modification rate. |
