What are the four major classifications of gas fire extinguishing systems

Update:04 Aug 2021

1. Heptafluoropropane
Features: Heptafluoropropane (HFC-227ea) automatic fire extinguishing system is a high-performance fire extinguishing equipment. Its extinguishing agent HFC-227ea is colorless, odorless, low-toxic, good in insulation, and has no potential for secondary dioxide pollution gas to lose the atmospheric ozone layer (ODP) is zero, which is the most ideal substitute for halogenated alkanes 1211.
2. Carbon dioxide
Features: Carbon dioxide fire extinguishing agent has the characteristics of low toxicity, no detergent equipment, good heat preservation performance and strong fire extinguishing ability. The popular gas fire extinguishing products on the market are also ideal products to replace halogenated alkanes.
Generally speaking, when the fire extinguishing system is activated, the control system will start the fire extinguishing process. Activate the fire extinguisher to extinguish the fire within a few seconds. Of course, when the delay starts, the sound and light alarm outside the gas protection zone will be activated, prompting personnel to evacuate within 30 seconds. Therefore, when the sound and light alarm sounds and sounds, the gas protection area must be evacuated immediately. If it is determined that there is no fire in the gas protection area (the control system fails), you can immediately press the emergency stop button outside the protection area (the button of the mobile base station (room) is in the protection area) to cancel the fire extinguishing procedure.

3. Mixed gas
Features: The mixed gas fire extinguishing agent is made of nitrogen or argon, and the gas contains a certain proportion of carbon dioxide gas. These gases are naturally present in the atmosphere and have no loss to the atmospheric ozone layer, and do not affect the "greenhouse effect" of the earth. The mixed gases are non-toxic and non-toxic. Color, odorless, non-corrosive, non-conductive, neither supports combustion nor reacts with most substances. It is an ideal environmentally friendly fire extinguishing agent.
4. Aerosol
Features: Aerosol fire extinguishing product is an effective fire extinguishing agent with minimal impact, simple system, low cost, no corrosion, no pollution, non-toxic, odorless layer loss, less residue, fast speed, high efficiency, etc.
Aerosol refers to a sol formed by solid or liquid as the dispersed phase and gas as the dispersion medium. That is, solid or liquid particles (about 1 μm in diameter) are suspended in a gaseous medium to form a sol. Aerosols and gaseous substances have the same flow diffusion characteristics and the ability to bypass obstacles to fill the entire space, which can quickly protect protected objects from flooding.
There are two methods to produce aerosol: one is to physically crush the solid into particles, and then disperse it in the gas to form an aerosol. One is a chemical method; through the combustion reaction of the solid, the solid product in the reaction product has a gas, and the gas disperses the solid particles to form an aerosol.