The substance to extinguish fire is water that we are most familiar with.
Although Water Mist Fire Extinguishing System uses the same substance, water, as sprinkler system or hydrant equipment, there is a great difference among these three systems and it should not be confused with each other. Practically, the fire-fighters of U.S. and Europe counties have already to apply water mist equipment to put off the initial stage fire. Water droplets are spread and filled within the space. Over 90 percent of the water is evaporated immediately and decrease the temperature and heat radiation of that surrounding. If we using conventional fire extinguishing system, the situation is completely different. Only 10 percent of the water is evaporated. The remaining 90 percent of water not only could apparently lower the temperature but also heat radiation. The great possibility may lead to great degree of water damage.
After having the basic understanding of water mist fire extinguishing, we summed up the basic principal of its fire extinguishing technology:
1. Cooling
Heat Absorption
The evaporation latent heat of water is 539 cal/g, and water can absorb heat energy in a large amount while putting out a fire, reduce the fire source and burning temperature, we are called the cooling law.
Surface Area Effect
The larger the surface area covered by water droplet is, the quicker the speed of heat absorption is; therefore it constitutes a positive relation. As the diameter of water droplet is reduced to 10%, the total surface area increases about 10 times, it is higher to suck thermal efficiency.
2. Dilution of Oxygen
Thermal Expansion Effect
Transform into vapor, about 1,700 times of volume expansion after water heat absorption, can dilute the thickness of oxygen around the fire source, and reduce the oxygen supply burnt continuously. Then we call the suffocating law.
Heat Convection Circulation Effect
It is influenced that water and particle are small and light, apt to be heated the convection circulation effect, can lengthen the time of floating in the air of water droplet, and introduce water and particle within the fire source, increase heat absorption and inflation result even more.
3. Blockage of Hot Radiation
Light, Heat Refraction Result
The medium is different, passing the heat radiation and heat-conduction of water and particle and vapor. Due to the refraction of hot wave of light wave, it is well below the air to pierce through the speed of advancing and virtually separates the transmission of hot energy.
Preventing Fire from Spreading
Other objects are not accumulated by the heat-conduction around the fire source; furthermore the fast and effective cooling function of water mist can prevent the fire from expanding.
4. Soaking and Washing
Suppressing the Smoke Layer
Proliferation of water droplets enhances absorption effect, dissolves the suspension of particles, leads them to sink to the ground, and thereby suppresses the accumulation of smoke.
Washing Toxic Chemical Substances
Micro droplets dilute and dissolve toxic chemical substances. The function is fast but gentle and won't produce and splash the phenomenon of bursting while mixing. Our system is easy to operate and maintenance and could be applied to the following areas in the territories of Taiwan, Hong Kong and Mainland China:
a. Packing factories, Painting factories & Warehouses.
b. Hospitals, P3 laboratories, hotels & shopping malls.
c. Cremators.
d. Tunnels, shopping mall & subway stations.
e. Military bases, ammunition depots & naval vessels.
f. Mechanical equipment.
g. Historical buildings, museums, libraries, churches & temples.
h. Telecommunication equipments & electronically power equipments.
i. Hangars, parking lots, engine rooms & pump rooms.
j. Petrochemical Factories, Chemical Factories & Oil Reservoirs.