Gas fire extinguishing system is one of the traditional four fixed fire extinguishing systems (water fire extinguishing system, gas fire extinguishing system, foam fire extinguishing system, dry powder fire extinguishing system), and is widely used in various machine rooms, power distribution rooms, archive rooms, industrial equipment, etc. Key protection areas. Among them, ig541 gas fire extinguishing system and heptafluoropropane fire extinguishing system are two types of gas fire extinguishing systems that are widely used. So what is the difference between these two gas fire suppression systems?
1. Heptafluoropropane fire extinguishing system
Heptafluoropropane is a clean and safe replacement agent for haloalkanes. It is a chemical synthetic agent used in a fully submerged gas fire extinguishing system. Heptafluoropropane is gaseous at normal temperature and pressure. It is stored in a steel bottle in liquid form by nitrogen pressurization. The storage pressure is generally 2.5Mpa, 4.2Mpa, and 5.6Mpa.
Heptafluoropropane fire extinguishing system is based on the combination of physical process and chemical reaction. Through thermal decomposition of the fire extinguishing agent, it absorbs a large amount of heat, and simultaneously generates active free radicals containing fluorine, which react with H +, OH-, and O2 produced by the chain reaction during the combustion process. The active free radicals undergo a gas-phase reaction, thereby suppressing chemical reactions during the combustion process to continuously and rapidly eliminate free radicals in the combustion process to implement fire extinguishing, which has an efficient fire extinguishing capability.
Advantages of heptafluoropropane fire extinguishing system
(1) The spraying of heptafluoropropane medicament at a certain concentration will not cause adverse effects on the human body, and can be used in places where people often move.
(2) Heptafluoropropane fire extinguishing system has a low fire extinguishing concentration, requires a small number of storage bottles, and covers a small area.
(3) Cabinet-type heptafluoropropane fire extinguishing device can be used under the condition that there is no steel cylinder room in the independent protective area or the smaller protective area is not suitable for the pipe network fire extinguishing system, which has high flexibility.
(4) Heptafluoropropane medicament has strong chemical stability and strong stability in steel cylinders.
Disadvantages of heptafluoropropane fire suppression systems
(1) Due to the limitation of system pressure, the pipeline network transportation distance is limited. In general, the pipe length from the 2.5Mpa system cylinder to the end nozzle should be within 30m; the pipe length from the 4.2Mpa system cylinder to the end nozzle should be within 45m; the pipe length from the 5.6Mpa system cylinder to the end nozzle should be within 60m . When the distribution of the protective area is relatively scattered, the sevoflurane fire extinguishing system requires multiple systems to meet the protection requirements.
(2) The principle of fire extinguishing is based on the combination of physical and chemical reactions. It has an efficient fire extinguishing capacity, but the price of sevoflurane is relatively higher than ig541.
(3) During the fire extinguishing process, the heptafluoropropane medicament will decompose to produce by-products such as hydrofluoric acid at a high temperature of 550 degrees or more. The window shall be opened for ventilation as soon as possible after the fire immersion time.
Second, ig541 gas fire extinguishing system
ig541 gas fire extinguishing system is an environmentally friendly fire extinguishing agent, which is a mixture of argon, nitrogen, and carbon dioxide. It naturally exists in the atmosphere, so its greenhouse effect is zero, and its ozone layer loss potential is zero. During the fire extinguishing, no chemical reaction will occur, it will not pollute the environment, non-toxic and non-corrosive, and has good electrical insulation performance. The fire extinguishing process is clean, leaving no trace after the fire extinguishing and will not pose a hazard to the protected equipment.
The ig541 gas itself is non-toxic and does not produce toxic decomposition products. The 8% carbon dioxide added to the ig541 fire extinguishing agent can stimulate the breathing acceleration under hypoxic conditions, meet the oxygen demand of the human body under hypoxic conditions, and is relatively safe for the human body. Can be used in places where people are often active.
The ig541 gas fire extinguishing system generally has a high storage pressure, with three pressure levels of 15Mpa, 20Mpa, and 30Mpa. Its protective concentration is generally 36.5-42.8%. The fire extinguishing mechanism is to reduce the oxygen concentration in the protected area and cause fire suffocation. Fire extinguishing is a physical fire extinguishing method, which is characterized by colorless, odorless and pollution-free fire extinguishing methods.
Advantages of ig541 gas fire extinguishing system
(1) The storage pressure of the ig541 gas fire extinguishing system is high, and the distance from the cylinder to the nozzle can be more than 150m. Under the system adopting the combination distribution method, more protection areas can be connected, saving the investment of gas fire extinguishing system.
(2) The ig541 mixed gas is close to the air density, and the pressure is high when the end nozzle is released. After the discharge, it can quickly diffuse and mix with the air, and quickly reduce the oxygen concentration to extinguish the fire.
(3) ig541 is stored in a gaseous state and sprayed in a gaseous manner, which will not cause a sharp drop in temperature in the protective area, nor will it cause any damage to precision equipment and other precious property.
(4) Since the gas used in the ig541 gas fire extinguishing system is an inert gas, its price is low, so the cost of secondary filling after the system is released is very low.
Disadvantages of ig541 gas fire extinguishing system
(1) The release pressure of the spray nozzle at the end of the ig541 gas fire extinguishing system is generally about 2Mpa, which is higher than that of the heptafluoropropane fire extinguishing system. When the nozzle is sprayed, a certain noise and high-speed airflow may be generated, causing dust and light objects to fly.
(2) Due to the high storage pressure of the ig541 gas fire extinguishing system, the pressure levels of its storage containers and release pipelines are relatively high. The requirements for manufacturing and installation are very strict, and the engineering cost is also the highest.
(3) The ig541 gas fire extinguishing system relies on suffocation to extinguish fires. Its design concentration is relatively high. Therefore, a large number of storage bottles are needed to protect a protective area of the same volume, and the area between the cylinders to be used is relatively large.
In summary, the cost of sevoflurane fire extinguishing agent is relatively high, but it has efficient extinguishing ability. It can be divided into three types: pipe network, cabinet type and hanging type, with high selectivity. The cost of ig541 gas fire extinguishing system is higher than that of sevoflurane fire extinguishing system. It has a high floor space, but the used gas cylinders have a large area, but because the gases used are all inert gases, they are non-toxic and do not produce toxic decomposition products. They are not corrosive to the protection object, and the price of fire extinguishing agents is relatively low. As for what kind of gas fire extinguishing system to use in the protection zone, professional engineers need to choose according to the site conditions and protection objects in the protection zone. 免费咨询 在线客服或请拨打0512-67951790。 You can consult online customer service for free or call 0512-67951790.
Nianhai Fire Fighting is a professional gas fire extinguishing system manufacturer. At present, the more mature solutions are sevoflurane gas fire extinguishing system, carbon dioxide fire extinguishing system, IG541 fire extinguishing system, ultra-fine dry powder fire extinguishing system, fire detection fire extinguishing system, etc. Since its establishment, the company has served 1000+ enterprises, and has established a set of standardized and process-oriented systems for gas fire extinguishing system solutions. Nianhai Fire Services has always served customers with a “renovation attitude for its own home”. Choose Nianhai Fire to make you feel more at ease!
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