Heat exchange and thermal radiation shielding of high-pressure fine water mist system

1. Overview of high-pressure fine water mist system

The high-pressure fine water mist fire extinguishing system is an advanced fire-fighting technology that uses high pressure to atomize water into tiny particles and extinguishes fires through the physical and chemical effects of these particles. Compared with traditional water spray fire extinguishing systems, high-pressure fine water mist systems have shown significant advantages in water consumption, fire extinguishing efficiency, and environmental friendliness. The core lies in the ability to atomize water into tiny particles with a diameter of tens to hundreds of microns. These particles have a large specific surface area and can quickly absorb heat and evaporate, thereby producing a strong cooling and suffocating effect.

2. Heat exchange: Cooling mechanism of high-pressure fine water mist system

In the fire extinguishing process of high-pressure fine water mist system, heat exchange is a crucial link. When tiny water mist particles come into contact with the flame, they quickly absorb heat and evaporate. This process not only leads to a sharp drop in the flame temperature, but also produces a series of physical and chemical effects that work together in the fire extinguishing process.

Rapid heat absorption: The specific surface area of ​​water mist particles is huge, which can quickly absorb the heat released by the flame. This causes the temperature around the flame to drop rapidly, slowing down the burning rate.
Evaporative cooling: As the water mist particles evaporate, a large amount of heat is taken away, further reducing the temperature of the flame. The evaporative cooling effect causes the temperature of the flame to continue to drop until it reaches the extinguishing point.
Heat conduction and convection: Water mist particles also produce heat conduction and convection effects during the evaporation process. These effects help to quickly disperse the heat of the flame into the surrounding environment, further reducing the temperature of the flame and the intensity of combustion.
Thermal radiation shielding: In addition to the direct cooling effect, the high-pressure fine water mist system can also form a barrier between the flame and the combustibles through fine water mist particles to reduce the transfer of thermal radiation. This helps to protect the surrounding unburned objects and personnel from high temperature.

3. Thermal radiation shielding: The protection mechanism of the high-pressure fine water mist system

Thermal radiation is one of the important causes of casualties and property losses in fires. The high-pressure fine water mist system effectively reduces the transfer of thermal radiation through the barrier formed by fine water mist particles between the flame and the combustibles, providing valuable time for personnel evacuation and fire fighting.

Barrier effect: The fine water mist particles form a dense barrier between the flame and the combustible. These particles can absorb, reflect and scatter thermal radiation, thereby reducing its transfer efficiency.
Reduce the intensity of thermal radiation: As the fine water mist particles evaporate and diffuse, the intensity of thermal radiation around the flame gradually decreases. This greatly reduces the threat to surrounding unburned objects and personnel.
Protect personnel safety: At the fire scene, the high-pressure fine water mist system can quickly form a protective barrier to provide a safe escape route for firefighters and trapped personnel. At the same time, it can also reduce the temperature and smoke concentration at the fire scene and improve the rescue environment.
Reduce property losses: By reducing the transfer of thermal radiation, the high-pressure fine water mist system can also protect surrounding buildings and equipment from high temperature damage. This helps to reduce property losses and repair costs caused by fires.

4. Application scenarios and advantages of high-pressure fine water mist system

The high-pressure fine water mist system has been widely used in many fields with its unique working principle and significant fire extinguishing effect. Its main application scenarios include:

Electrical fire: Since the high-pressure fine water mist system is non-conductive and harmless to the human body, it is particularly suitable for electrical fire fighting. It can quickly reduce the flame temperature and oxygen concentration, and extinguish fires of electrical equipment and cables.
Solid fire: For fires caused by solid combustibles such as wood and paper, the high-pressure fine water mist system also has a significant fire extinguishing effect. It can quickly cover the flame and reduce the temperature, inhibiting the combustion reaction.
Liquid fire: For fires caused by flammable liquids such as oils and alcohols, the high-pressure fine water mist system can also play an important role. It can quickly reduce the flame temperature and isolate the oxygen supply to extinguish the fire.
Special places: In special places such as libraries, museums, and data centers, the high-pressure fine water mist system is highly favored for its protective performance for cultural relics and equipment. It can quickly extinguish fires and reduce damage to the surrounding environment.
In addition to a wide range of application scenarios, the high-pressure fine water mist system also has the following significant advantages:

Water-saving and environmental protection: Compared with traditional water sprinkler fire extinguishing systems, the water consumption of high-pressure fine water mist systems is greatly reduced. This not only reduces the waste of water resources, but also reduces the risk of water damage after fire extinguishing.
High fire extinguishing efficiency: Due to the miniaturization and uniform distribution of water mist particles, the high-pressure fine water mist system can quickly cover the entire fire area and produce a strong cooling and suffocation effect. This makes it faster and more effective in extinguishing fires.
High safety: The high-pressure fine water mist system is non-conductive and harmless to the human body, and is particularly suitable for special occasions such as electrical fires. It can also reduce the transfer of heat radiation and the generation of smoke, providing a safer environment for personnel evacuation and fire fighting.
Low maintenance cost: Due to the simple system structure and durable components, the maintenance cost of the high-pressure fine water mist system is relatively low. This reduces the user's use cost and improves the cost performance of the system.