【 Weak current college 】 computer room and electronic equipment room common extinguishing agent device comparison

Computer room is a product of high-tech era, computer room charged device for a long time with load, as the cable wires and electronic elements of aging, short circuit, fire occurred at any time; after all, if other parts of the same building on fire, nest, Ann have eggs? thus computer room security fire is our new topic of fire.

With the growing popularity of electronic equipment, in order to protect the expensive electronic equipment and data resources, various extinguishing agent and fire suppression equipment also had to launch phase. As a result of computer and electronic equipment room environment better, alarm system, without too many special requirements, present various alarm systems are essential for the extinguishing agent is more controversial, new fire and extinguishing agent in the application process the changes experienced by provoking. In fire danger, fire fighting, protection of the environment, economical and practical, and many other factors in choosing a satisfaction of fire fighting equipment programmes, and its complexity far beyond their imagination. Conscientiously sum up my fire, the fire for the new century noted in the right direction, it is of great significance. Now the computer room and electronic equipment room of environmental conditions, to present a more extensive use of several fire and fire-fighting equipment of its own performance, and environmental protection aspects, for a description and comparison.

The current widely used in computer rooms, electronic devices and fire extinguishing agent types such as storeroom, primarily carbon dioxide, halon (1211, 1301), and in recent years, from overseas introduction of seven fluoride binghua silane (FM200), inergen (INERGN) clean gas and ultra-fine powder, Sol, and other fire extinguishing equipment.

1. halon

Halon (1211, 1301) extinguishing agent appeared at the beginning of the 20th century, began to aircraft and ships. In the early 1970s, United States Fire Protection Association (NFPA) has developed and adopted 1301 fire extinguishing system and 1211 fire-extinguishing system of formal standards, thus prompting 1211 worldwide rapid promotion. Introduction of China's halon and research started in 1964, but the system and related specification standard specifies to only started in the 1980s.

Halon fire extinguishing agent is replaced with halogen Atom alkanes compounds in some or all of the hydrogen atom is the generated has a fire-fighting capability of compounds collectively, also known as "halon fire extinguishing agent". As a cleaning agent has been greatly generalization, widely used in various kinds of power electronic equipment room, the 1970s found halon to undermine one of the main atmospheric ozone layer. 1991 adopted the Montreal Protocol (Amendment) Act, all developed countries have the complete cessation of the use of halon, China will be held this year and 2010 respectively 1211 and 1301 fire extinguishing agent fully disabled.

2. carbon dioxide

Carbon dioxide is one of the Earth's atmospheric composition, used as the extinguishing agent began in the 19th century, there are more than 100 years of history in China also has the CO2 fire-extinguishing system design specifications ", it at room temperature is a colorless, tasteless, non-conductive, chemistry is neutral, non-corrosive gases, in the architectural design fire protection standard provisions can be used in the file room, power electronics equipment room, a large number of sites. The fire-fighting mechanism is diluted oxygen, suffocation, also have a cooling effect. But in recent years to apply to some electronic equipment room is in question, mainly because of its lethal concentration on the human body is 20%, while the minimum fire extinguishing concentration but to 34% (electronic equipment, computer room design concentration ≥ 40%). Despite delay 30s to evacuate the protection area personnel measures, but accidents may, maiming domestic already. Due to its fire-fighting mechanism is diluted oxygen, fire rate is low, often wait until the fire going, the protection of your computer and other equipment have already been burned, fire-fighting has lost the meaning of the protection device; carbon dioxide in the automatic connection can only make the network type, the application typically uses high-pressure liquefied storage of high-voltage system and the low voltage system low pressure storage; high pressure storage cylinder group number, the area is large, the storage temperature requirements more stringent; low-voltage system needs peripheral refrigeration equipment, the cost is high, the transport pipeline also strict requirements.

In addition, the Jet has a relatively strong when freezing effect, in-room items frosting, air condensation occurring foggy, actually is carbon dioxide, acid fog on electronic equipment, magnetic recording device has a certain impact. Then a dispute because carbon dioxide belong to three Atomic molecular structure, causing the greenhouse effect on Earth "," according to this, the carbon dioxide in it was often the computer room and electronic equipment room promotion should seriously.
3. seven fluoride binghua silane (SF6 Bing, trifluoromethane)

Seven fluoride binghua-also known as the FM200 or HFC-227ea, for United States Great Lakes products. The class agent at room temperature for gaseous, colorless, odorless, its mechanism and halon fire extinguishing, to break the chain of fire burning more quickly when the mist, spray and certain frozen phenomenon, belongs to the chemical extinguishing the fire, the pharmacy in high temperature decomposition of some toxicity, in fire generated large amounts of hydrogen gas, combined with the gaseous water to form hydrofluoric acid, hydrofluoric acid is corrosive strong acid, the skin, paper, glass, precision instrument with a strong acid corrosion. Pharmacy storage pressure usually 2.5Mpa or 1.2Mpa. It can only serve as a substitute for the "halon" transition product, not suitable for protecting your computer and other electronic devices.

4. Superfine powder

At present, the international market, a new State-of-the-art, surface by special processing of ultra-fine powder of "fire", resembling the powder of the shelf life of up to 10 years with that kind of powder made of automatic fire fighting equipment maintenance-free up to 5-10 years, the fire extinguishing efficiency is one of the existing micro-fire extinguishing powder in 3-4 times, 20 times the gas, water of 40 times, is the equivalent of fire protection products in the highest, and project cost low. This kind of fine atmosphere of fire-extinguishing powder on depletion for energy (ODP) is zero, the value for the greenhouse effect (GWP) to zero, the "Super fire extinguishing powder" non-toxic, non-corrosive, on human skin and respiratory irritant, not under the normalSolution, non-caking moisture, not with good fluidity, diffuse and electric insulation, electrical equipment, instrument and has no effect, can realize all submerged automatic fire extinguishing and local fire protection; fire-extinguishing powder resembling the "super" to include a computer room, electronic equipment room, fire place, is a good fire extinguishing products, which have now been introduced to China, and has produced domestically.

After the above comparison, we have a variety of fire extinguishing products in the computer room of an idea of, in fact, in the early days of computer towards society, its magic computation function and high prices is not ready. Due to the lack of experience, being a good horse to equip the saddle and the repercussions of the effect of two different mindsets, requires that the computer room of fire must select clean gas fire extinguishing agent, has developed a computer room, gas fire norms in that time, these provisions are correct, at least, the so-called good horse with good saddle, refers to the clean gas fire extinguishing the new fire extinguishing means joint application in high-tech, rather mysterious and expensive computer seems to be only innovative clean gas fire extinguishing to match each other: while bypassing the mind is reflected in the fire's while protecting your computer.

Previously, use clean gas fire extinguishing the most as long as the reason for this is "protected computer". In fact, for this reason it is not much sense. We know that the performance of computer hardware has been subject to price changes, i.e., Moore's law every 18 months, the performance is double the price reduced by half. That is, from 1982 to 1995 computer hardware performance price has changed 8 double change. The same performance of the computer, the 1995 price just 1982 1/28 times, that is, less than 1/250. With the popularization of science and technology, computer and electronic product of universal application, and then form the basis for that year is ridiculous.

Fire loss in truly great is the loss of user data, it can destroy all the utilities and even users affected community. On this point, we are fully aware of the basis or need not choose the extinguishing of thought. Just because it's important that we want to select fine dry powder extinguishing the fire effect better fire extinguishing agents: (1) the fire risk killing the initial is protected. (2) fire is fire, ultra-fine powder extinguishing agent in the scene after the fire is easier to clean.

(3) in General, important data owners also have strong data protection awareness and reliable backup means that important data is completely lost in the fire.
Accordingly, we believe that the clean gas fire does not apply to computer room. Halon fire extinguishing effect is good, but would not have been able to consider. Other alternatives of asphyxia, toxic, low temperature effect and their expensive price and maintenance costs that people are reluctant to use them. The most fundamental is the effect of extinguishing them, sometimes several minutes later. We know that the fire loss than the missed opportunities for early fire suppression.

To sum up, a computer room does not have to use the clean gas fire, clean gas fire do not fully apply to the computer room. Therefore, it is best not to install computer room clean gas fire extinguishing system. Computer room fire extinguishing system should consider choosing efficient ultra-fine powder extinguishing agent, for important computer room, you should increase the alarm system control system standards. For example the use of smoke, temperature sensing and automatic fire extinguishing device control linkage system, the more reliable, not misuse. In addition, the existing building of fire extinguishers configuration design code to include a computer room, civil construction design of fire extinguishers configuration made a detailed provisions, which is effective at the beginning of fire fighting computer room. Extensive fire codes, impact, wide-scale is not easy to accurately grasp the martial law. In the specification for development, in developing improved specification, is that we should take a positive attitude, the purpose of fire protection engineering lies in the same time fire and protection.