Gas fire extinguishing devices such as FM200 firefighting agent, or heptafluoropropane are a relatively common type of automatic fire extinguishing system today. There are two main working principles. The first is suffocation to isolate oxygen. The second is to extinguish fires through chemical suppression, which is suitable for places where water is not suitable for fighting fires, such as large computer rooms, library collections, and important archives.
Cultural relics are important historical and cultural heritage and an important symbol of national civilization. Fire protection is an important part of the protection of cultural relics. Cultural relic buildings and museums have a common feature: they are relatively old, and there are many flammable wooden structures. The collections of materials are precious and most of them are flammable. Once damaged, there will be no two. Using gas to extinguish the fire avoids irreversible damage to books, precision instruments and other materials caused by water, foam and other substances (imagine the dusty face after using a dry powder fire extinguisher), and there is no requirement for the type of fire caused.
The gas fire extinguishing system mainly includes carbon dioxide, heptafluoropropane and inert gas. Carbon dioxide is toxic to humans and requires a 30s injection delay. The inert gas has a high extinguishing concentration and a long injection time, which is not suitable for rapid extinguishing. The most suitable is heptafluoropropane.