We know that both suspended heptafluoropropane and suspended ultra-fine dry powder belong to fire extinguishing systems, but in fact, they belong to two different fire extinguishing systems. Heptafluoropropane belongs to gas fire extinguishing, while ultra-fine dry powder belongs to dry powder fire extinguishing. But since both of them are suspended in use, today we will compare them.
Hanging heptafluoropropane is an application form of heptafluoropropane fire extinguishing agent, which is characterized by its excellent fire extinguishing characteristics, small size, light weight and easy installation. It is divided into three control spray forms: temperature control, electric control and electric temperature dual control. It is especially suitable for small places or protective areas that protect a small area alone. At the same time, heptafluoropropane also has the advantages of no damage to equipment, good electrical insulation and long spraying distance. Only within the design concentration, hanging heptafluoropropane will not cause harm to human body (heptafluoropropane is generally 7% lower than the design concentration, while the concentration that human body can be exposed to is 9% harmless to heptafluoropropane), which depends on the great non-conductive performance of heptafluoropropane, Therefore, it is especially suitable for use in machine rooms, computer rooms, or server rooms. When heptafluoropropane reaches a certain concentration in the protective area, it can also inhibit the explosion.
As for the suspended ultra-fine dry powder, the ultra-fine dry powder is usually divided into BC dry powder or ABC dry powder, which are weakly alkaline or weakly acidic respectively. At the same time, the ultra-fine dry powder is smaller than ordinary dry powder, ranging from one tenth to one hundredth. The suspended ultra-fine dry powder has two forms at the same time: pressure storage and non pressure storage, and is applied in different scenes. At the same time, the suspended ultra-fine dry powder is stronger in fire extinguishing efficiency and wider in applicable environment, The fire extinguishing efficiency is ten times faster than that of heptafluoropropane, and the cost is lower than that of gaseous fire extinguishing, but the disadvantages are also great, that is, the degree of pollution is large, the falling dust is difficult to clean up, the time to float in the air is limited, and it will no longer move when it settles down. In addition, it is very taboo to have shelter, which is difficult to surpass the past, and will affect the fire extinguishing efficiency. Importantly, Ultra fine dry powder can not be used in scenes where people often appear and there are many electronic devices. People breathe into the body and it will harm the body. Second, electronic devices are afraid of dust and are prone to failure.
This is the difference between suspended heptafluoropropane and suspended ultra-fine dry powder. The former is more dominant in computer rooms, server stations or protection areas with many electronic equipment. Suspended ultra-fine dry powder is more suitable for use in unattended places, especially in urban underground pipe galleries.
