Applied And Cost Comparative Study Of Halon Substitute Fire-extinguishing System

It is introduced about policy-related demand schematically in the text. That is protect ozonosphere international movement and wash out Halon national project. It expound the destroyed mechanism to ozonosphere. It is necessary to propound to wash out Halon extinguishing agent,give rise to study Halon substitutes as also it′s application present in the world.Gas fire extinguishing system has the characteristics of higher efficiency and environment friendship. Based on the requirement that more and more important places should be protected by gas fire extinguishing system, the thesis introduced the gas fire extinguishing agent and the development tendency as well as the application features of the gas firs extinguishing system. According to the gas fire extinguishing agents listed in ISO/CD/14520 Gaseous Fire Extinguishing System-Physical Properties and System Design as well as NFPA-2001(2000)Code for Design of Clean Gas Fire Extinguishing System, and in the light of the requirements in the current has been obtained based of further comparison of the fire extinguishing mechanism, fire extinguishing efficiency and the related engineering cost of various gas fire extinguishing agents used in the important places in industrial buildings and civil buildings. Nowdays, halon fire extinguishing agent and its system has been prohibited at home and abroad. Based on the analysis of the characteristics of high pressure CO2 agent, FM-200, IG-541,SDE and their corresponding fixed fire extinguishing systems and the design calculation of unit fire extinguishing system and combined distribution system, it came to the conclusion that the design amount of the fire extinguishing agent used in the system must be defined, or else, the safety of the people in the protected area will be affected seriously.In the light of a case study and based on the prices of the products manufactured by some main fire product manufacturers in China, the comparison was done among the products, the installation of the materials as well as the prices of the products according to the base price quota for the equipment installation budget and the engineering price ration of the three gas fire extinguishing systems under different fire protect eight(or less) areas, heptfluoride propane(FM-200) fire extinguishing system is the best choice, if one set of the equipment is used to protect four(or less) areas, the high pressure CO2 system has the lowest engineering cost,if one set of the equipment...