APPARATUS AND SYSTEM FOR THE STORAGE AND SUPPLY OF LIQUID CO2 AT LOW PRESSURE FOR EXTINGUISHING OF FIRES

摘要

An apparatus and system for storing and supplying liquid CO2 at low pressure for extinguishing fires. The apparatus comprises a pressure vessel (13) for storing liquid CO2 at low pressure, a cooling means (29) in contact with gaseous CO2 in the vessel to maintain the low pressure, an inlet (24) and outlet (32) to fill the vessel and a supply conduit (17) communicating with a lower portion of the interior of the vessel to allow liquid CO2 to pass from the vessel and into a reticulation system. A number of pressure vessels can be coupled together through a manifold (165) to provide the required amount of liquid CO2 to a risk site. Supply valves (18) or manifold valves (173, 174) can be operated by a sensor (175, 176) in a risk site and a logic processor (177) can be used to regulate the valves and thereby the liquid CO2. The apparatus and system is particularly designed as a replacement for current halon systems which cause damage to the ozone layer.