A fire suppression nozzle can include a first fluid channel configured to be in fluid communication with a first fluid having a first flow velocity and a second fluid channel configured to be in fluid communication with a second fluid having a second flow velocity. A mixer can be disposed between the first fluid channel and the second fluid channel such that the mixer is configured to induce streamwise vorticity in at least the first fluid exiting first fluid channel to cause mixing of the first fluid and the second fluid to reduce a flow speed of a mixture of the first fluid and the second fluid.

An aqueous fire extinguishing agent and a preparation method thereof are provided, which are used for making a throw-type fire extinguisher. The aqueous fire extinguishing agent is composed of two compositions of A and B. The composition A is a fortified water added with a flame retardant (e.g., one or more of ammonium chloride, diammonium hydrogen phosphate and ammonium polyphosphate), a wetting agent (e.g., alkyl polyglycoside) and a colloid (e.g., polyacrylamide solution). The composition B is a regulator. After the composition A and the composition B are mixed, a discharge rate/speed of fire extinguishing substances is increased, so that an escape passage/route can be opened up quickly.

A remotely controlled fire suppression assembly includes a water reservoir that is positioned adjacent to a building and a fire retardant reservoir that is positioned adjacent to the building. A pumping unit is positioned adjacent to the building and the pumping unit is in fluid communication with each of the water reservoir and the fire retardant reservoir. A fire sensor is coupled to the building and the fire sensor turnings on the pumping unit when the fire sensor senses heat and moisture that correspond to conditions of an active fire. A plurality of sprinklers is provided and each of the sprinklers is in fluid communication with the pumping unit. The plurality of sprinkler is distributed on and around the building to spray the mixture of water and fire retardant for extinguishing a fire on or around the building.

Proposed is a battery fire suppression system with a fire extinguishing agent cooling function, in which a fire extinguishing gas serves as a refrigerant for cooling a fire extinguishing agent and at the same time, the fire extinguishing gas is sprayed into a battery room or a battery module to quickly extinguish a fire in the battery. While allowing the fire extinguishing gas to basically serve as the refrigerant, depending on the amount of combustible materials loaded in the battery room, the shape of battery cells installed inside the battery module, the battery capacity, etc., it is possible to selectively determine whether to allow the fire extinguishing gas to serve only as the refrigerant, or to allow the fire extinguishing gas to be sprayed to the battery module where the fire has occurred to cool the surface of the battery module or directly extinguish the fire in the battery module.

A fire suppression system for mitigating a thermal runaway event. The system comprising a battery pack having a housing defining a volume, a battery module arranged within the housing, and a plurality of battery cells arranged within the battery module, where the plurality of battery cells are configured to provide an electrical output. The system also comprising a suppression system coupled with the battery pack, the suppression system comprising a nozzle configured to receive a gaseous fluid and a liquid fluid, where the nozzle is configured to deliver a mist suppressant including the gaseous fluid and the liquid fluid to the battery pack, such that the gaseous fluid entrains the liquid fluid to mitigate the thermal runaway event.

An aircraft fire suppression system includes a container filled with gases in both a liquefied state and a compressed gas state. The container includes a first tube positioned in the liquefied gas section configured to expel a regulated amount of liquefied gas into the fire suppression system. The container also includes a second tube positioned in the compressed gas section configured to expel a regulated amount of compressed gas into the fire suppression system.

The present invention relates to a composition for extinguishing fire, comprising an aqueous solution of a surfactant and a deliquescent anionic salt. A method for extinguishing fire is also disclosed. The method (100) comprises mixing a surfactant and a deliquescent anionic salt in water to form an aqueous solution (110) and spreading the aqueous solution over a burning surface (120).

A fire extinguishing system of an air mobility vehicle includes a refrigerant flow line in which a refrigerant flows, and including a compressor, a condenser, a first expansion valve, and an evaporator, a fire extinguishing liquid flow line connected to the refrigerant flow line via a connection valve, and configured to spray a mixed liquid of a fire extinguishing liquid and the refrigerant, a mixing part connected to the fire extinguishing liquid flow line, and configured to mix the refrigerant and the fire extinguishing liquid, and a fire extinguishing liquid storage part configured to store the fire extinguishing liquid and to discharge the fire extinguishing liquid into a mixing space of the mixing part.

A fire suppression system that includes a non-rigid pouch, a quantity of suppressant, a quantity of gas, and a pressurized gas source. The non-rigid pouch that includes an exterior surface and an interior space. The quantity of suppressant, the quantity of gas, and the pressurized gas source is contained within said interior space. The pressurize gas source is configured to increase the internal pressure of the non-rigid pouch by injecting gas into the interior space. The non-rigid pouch is configured to rupture when the internal pressure exceeds a predetermined threshold pressure.

An example fire suppression apparatus includes a nozzle assembly configured to emit a spray of water through a spray nozzle projecting outward from a side wall of the nozzle assembly. The nozzle assembly includes a union fitting body, a first compression nut threadably engaged with a first end of the side wall, a second compression nut threadably engaged with an opposite, second end, and a longitudinal aperture extending from the first end to the second end. A spray nozzle rotatably connected to the side wall is formed with a transverse spray channel in fluid communication with the longitudinal aperture. An apparatus embodiment optionally includes many of the nozzle assembly connected in series to one another by intervening water distribution pipes to form a water distribution network.