Water mist fire extinguishing system is suitable for ABC fire

Fire extinguishing mechanism of high-pressure fine water mist fire extinguishing system

1. Efficient cooling effect: Since the droplet diameter of fine water mist is very small, the diameter of ordinary fine water mist system is 10~100um. During the vaporization process, it absorbs a lot of heat from the surface of the burning object or the fire area. According to the latent heat of evaporation of 100℃ water is 2257kJ/kg, the heat absorption power of the water mist sprayed by each nozzle (spraying speed 0.133L/S) is about 300KW. Experiments have shown that the smaller the diameter, the greater the heat absorption per unit area of ​​the water mist, the faster the droplet speed, the smaller the diameter, and the higher the heat transfer rate.

2. Asphyxiation effect: After the fine water mist is sprayed into the fire scene, it evaporates quickly to form steam, and the volume expands rapidly by 1700~5800 times, reducing the oxygen volume fraction and forming a barrier around the burning object to block the inhalation of fresh air. As water vaporizes rapidly, the water vapor content will increase rapidly. At the same time, when the oxygen content in the space around the fire source decreases to 16%~18%, the flame will be extinguished. In addition, the droplets in the non-combustion area outside the fire scene will not vaporize, and the gas content in the air will not change, which will not endanger the lives of people.

3. Isolation of radiant heat: After the high-pressure fine water dance is sprayed into the fire scene, the vapor formed by evaporation quickly envelops the burning objects, flames and smoke, and has excellent barrier ability to the radiant heat of the flame, which can effectively inhibit the radiant heat from igniting other objects around, and achieve the effect of preventing the spread of flames. The radiation reduction effect of water dance can also be used to protect the lives of firefighters.

4. Dilution, emulsification, and wetting effects: large-particle droplets with large impulse will impact the surface of the burning object, thereby wetting the burning object, preventing the further generation of solid volatile combustible gases, and achieving the purpose of extinguishing the fire and preventing the spread of fire. In addition, high-pressure fine water mist also has the effect of washing smoke and exhaust gas, emulsifying and diluting liquids, etc.

Main technical parameters of the system

Open water mist fire extinguishing device:

Closed water mist fire extinguishing device:

Company introduction:

Guangzhou Rongan Fire Protection Equipment Co., Ltd. is a professional manufacturer of fire protection facilities integrating R&D, production, design and sales services. The company has experts from the national fire protection industry standards committee and a group of professional technical service teams with more than ten years of experience in the fire protection industry, and will spare no effort to provide you with the most intimate and professional comprehensive technical solutions for fire protection engineering products. "Rongxiao" series products produced by the company have passed the national compulsory product certification and the national fixed fire extinguishing system inspection center, with reliable quality and stable performance, and the factory has passed the ISO9001 quality system certification.

Frequently asked questions:

Q1: Are you a manufacturer or a trading company? A1: We are manufacturers.

Q2: How long is the delivery time? A2:10 days, which can be negotiated according to the quantity.

Q3: How to deal with the fault? A3: During the warranty period, we will provide you with a remote emergency plan during working hours. During the free maintenance period, the company will replace spare parts or complete machines that have failed due to defects or quality problems free of charge.