| 摘要 |
PROBLEM TO BE SOLVED: To obtain a high suppression effect or fire extinguishing effect to a liquid fuel fire by incorporating an alkali loaded stream into a fire extinguishing liquid in a fog fire extinguishment method for spraying the fire extinguishing liquid from a fog nozzle to fog. SOLUTION: The fog fire extinguishing unit U has a fire extinguishing tank 4 in which the fire extinguishing liquid is housed, a pressurizing source cylinder 5 in which a pressurizing gas is housed, a signal receiver 6, etc. The fog fire extinguishing apparatus 1 pulverizes and sprays the fire extinguishing liquid of the fire extinguishing liquid tank 4 from the fog nozzle 2 by the pressure of the pressurizing gas of the pressurizing source, cylinder 5 while mixing the same with the gas when the signal receiver 6 receives a fire signal from a fire alarm system 3 via wiring L. Inert gas, such as, for example, nitrogen, is used as the pressurizing gas to be housed into the pressurizing source cylinder 5. The fire extinguishing liquid containing the alkali loaded stream, for example, the fire extinguishing liquid containing an aqueous solution of potassium carbonate, is used as the fire extinguishing liquid to be housed into the fire extinguishing liquid tank 4. As a result, the high suppression effect or fire extinguishing effect to the liquid fuel fire may be obtained.
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