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<p>Considering the hazard of gasoline fires and the critical demand for effective suppression technologies, the fire suppression effectiveness of compressed air firefighting foams (CAFs) in gasoline fires was studied using a self-assembly suppression experimental setup. The study thoroughly investigated the foaming ability, foam stability and foam spreading ability of CAFs at different gas-liquid ratios. The fire suppression mechanism of CAFs in gasoline fire was analyzed and the grey relational analysis was applied to reveal the relational degree of influencing factors on the fire extinguishing effectiveness. Fire suppression test indicates that CAFs effectively inhibit the gasoline pool fire, while the co-boiling phenomenon made suppression difficult and imposed an additional fire hazard. The fire extinguishing effectiveness of CAFs is affected by the combined effects of smothering and cooling, which is related to foam property, foam stability and foam spreading ability. Especially, CAFs at the gas-liquid ratio of 12 result in the optimal fire extinguishing effectiveness with temperature drop rate of 10.87&#xa0;°C/s and fire extinguishing time of 34.0&#xa0;s. The grey relational analysis reveals that the fire extinguishing effectiveness of CAFs is highly related to the foam spreading ability compared to the foam stability, while the grey relational grades of foam spreading ability and foam stability are 0.7691 and 0.6980, respectively. This research provides a guidance on the preparation and application of foam extinguishing agents.</p>

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Fire Suppression Behavior of Compressed Air Firefighting Foams and its Influencing Factors on the Inhibition of Gasoline Pool Fire

  • 期刊论文

  • 发表日期：

    2026年3月31日

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  • Jingjing Guan,
  • Zheng Wei,
  • Long Yan,
  • Zhisheng Xu

摘要

Considering the hazard of gasoline fires and the critical demand for effective suppression technologies, the fire suppression effectiveness of compressed air firefighting foams (CAFs) in gasoline fires was studied using a self-assembly suppression experimental setup. The study thoroughly investigated the foaming ability, foam stability and foam spreading ability of CAFs at different gas-liquid ratios. The fire suppression mechanism of CAFs in gasoline fire was analyzed and the grey relational analysis was applied to reveal the relational degree of influencing factors on the fire extinguishing effectiveness. Fire suppression test indicates that CAFs effectively inhibit the gasoline pool fire, while the co-boiling phenomenon made suppression difficult and imposed an additional fire hazard. The fire extinguishing effectiveness of CAFs is affected by the combined effects of smothering and cooling, which is related to foam property, foam stability and foam spreading ability. Especially, CAFs at the gas-liquid ratio of 12 result in the optimal fire extinguishing effectiveness with temperature drop rate of 10.87 °C/s and fire extinguishing time of 34.0 s. The grey relational analysis reveals that the fire extinguishing effectiveness of CAFs is highly related to the foam spreading ability compared to the foam stability, while the grey relational grades of foam spreading ability and foam stability are 0.7691 and 0.6980, respectively. This research provides a guidance on the preparation and application of foam extinguishing agents.