| 摘要 |
<p>Mobile fire-fighting systems (30) and a method of producing breathable fire-suppression compositions are provided for extinguishing fire in buildings, and other human occupied structures, being so effective in suppressing fires under ruins of collapsed buildings. The systems (30) employ a transportable high pressure container having a breathable composition or nitrogen gas, or liquid nitrogen container (32), vaporizer (36) and mixing chamber (37), wherein a vaporized nitrogen gas is mixed with an ambient air in order to produce said breathable fire-suppression composition. The method of producing said composition at a fire site employs mixing of nitrogen gas with ambient air or, alternatively, vaporizing of liquid nitrogen in necessary quantities and mixing it with ambient air in provided proportions. A breathable fire-suppression composition is provided for use in said mobile systems, said composition having an oxygen content below 16 % or from 10 % to 12 % for the majority of civil applications.</p> |
