| 摘要 |
Self-contained fire protection apparatus. The present apparatus comprises a first container for storing water or other liquid under atmospheric pressure, a discharge conduit from this container, and a second container having high surface to volume ratio for storing liquefied propellant under pressure. Communication between the first and second containers is prevented until the apparatus has to be used. Then the propellant transfer line connecting the two containers is opened, preferably by actuation of a valve controlling this line, allowing propellant vapors to flow into the first container and establish a pressure therein sufficient to cause discharge of the contents of the first container. Heat exchange between the water being discharged and the propellant is provided so that the propellant temperature and pressure do not drop appreciably as the propellant is being evaporated and transferred.
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