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The design essence of the L-type nozzle is that it can efficiently disperse the fire extinguishing agent into fine droplets. The diameter of these droplets is usually less than 100 microns, and some even reach the nanometer level, with an extremely high specific surface area. The fine droplets not only increase the contact area with the air, but also accelerate the evaporation process, thereby achieving rapid heat absorption and cooling.
When the L-type nozzle is activated, the fire extinguishing agent passes through the precision flow channel inside the nozzle under high pressure, and is subjected to strong shear and impact forces, and is dispersed into fine droplets. These droplets are then sprayed to the fire source and its surrounding environment at a certain speed and angle, starting their evaporation and cooling journey.
The evaporation of droplets is the core of the continuous cooling mechanism. Evaporation is an endothermic process, and each gram of water evaporates and absorbs about 2257 joules of heat. When the fine droplets come into contact with the fire source and its surrounding environment, they evaporate rapidly, absorb a large amount of heat, and cause the temperature of the fire source to drop rapidly.
In addition, the water vapor produced by the evaporation of the droplets forms a barrier, which not only isolates the air from the fire source and slows down the burning rate, but also further reduces the temperature of the fire source and its surroundings through heat conduction and convection. This process is continuous, and the cooling effect will continue as long as the droplets continue to spray and evaporate.
The continuous cooling mechanism of the car fire extinguisher mother valve L-type nozzle has significant advantages. It can keep the fire source and its surroundings at a low temperature for a long time, ensuring that the temperature of the fire source drops below the ignition point, thereby effectively preventing the fire from rekindling. The wide coverage and uniform distribution of fine droplets improve the efficiency of fire extinguishing and shorten the time of fire extinguishing. The water vapor barrier and cold air flow produced by evaporation not only help to extinguish the fire, but also protect the surrounding equipment and personnel from high temperature damage.
In vehicle fires, the continuous cooling mechanism of the L-type nozzle plays a vital role. Whether it is an electrical fire, an oil fire or other types of fires, the L-type nozzle can respond quickly, and achieve rapid fire extinguishing and continuous cooling through its unique fine droplet injection technology.
Take electrical fires as an example. Since there are usually a large amount of insulating materials and combustible materials inside electrical equipment, once a fire occurs, the fire often spreads rapidly and is difficult to control. However, the fine droplets of the L-type nozzle can quickly penetrate into the electrical equipment, evaporate and absorb heat, reduce the temperature of the fire source, and isolate the contact between the air and the fire source, thereby effectively curbing the spread of the fire.
In oil fires, L-type nozzles also perform well. Oil fires are characterized by fast burning speed, fierce fire, and difficulty in extinguishing. However, the fine droplets of the L-type nozzle can quickly cover the oil surface, evaporate and absorb heat, reduce the oil temperature, and dilute the oil vapor concentration to reduce the risk of explosion. In addition, the water vapor barrier generated by the evaporation of the droplets can also isolate the contact between oxygen and the oil surface, further slowing down the burning speed.
With the continuous development of science and technology, the continuous cooling mechanism of the L-type nozzle will also usher in more technological innovations and performance improvements. For example, by optimizing the internal structure of the nozzle, improving the flow channel design, and adopting new fire extinguishing agents, the generation efficiency and evaporation rate of fine droplets can be further improved, thereby enhancing the continuous cooling effect. In addition, combined with intelligent sensors and control systems, more precise fire extinguishing and cooling control can be achieved, improving fire extinguishing efficiency and safety.
