General design points of 70L pipeless heptafluoropropane fire extinguishing system :
70L 无管网七氟丙烷灭火系统理论的灭火设计浓度需要小于等于灭火浓度的 1.3 倍，惰化设计浓度确保大于等于惰化浓度的 1.1 倍； l The theoretical fire extinguishing concentration of a 70L pipeless heptafluoropropane fire extinguishing system needs to be less than or equal to 1.3 times the fire extinguishing concentration , and the inerting design concentration must be greater than or equal to 1.1 times the inerting concentration .
油浸变压器室、带油开关的配电室和自备发电机房等保护区，灭火系统的灭火设计浓度宜采用 9% ； l Oil-immersed transformer room, power distribution room with oil switch and self-provided generator room and other protection areas. The fire-extinguishing design concentration of the fire-extinguishing system should be 9% ;
图书、票据、文物资料库和档案等保护区，灭火系统的灭火设计浓度宜采用 10% ； l For books, bills, cultural relics databases and archives and other protected areas, the fire suppression design concentration of the fire suppression system should be 10% ;
通讯机房和电子计算机房等保护区，灭火系统的灭火设计浓度宜采用 8% ； l In protective areas such as communication room and computer room, the fire extinguishing design concentration of the fire extinguishing system should be 8% ;
保护区实际应用的浓度必须小于等于灭火设计浓度的 1.1 倍； l The actual application concentration in the protected area must be less than or equal to 1.1 times the fire protection design concentration ;
在通讯机房和电子计算机房等保护区，设计喷放时间不应大于 8s ；在其他保护区，设计喷放时间不应大于 10s ； l In protected areas such as communication room and electronic computer room, the designed discharge time should not be greater than 8s ; in other protected areas, the designed discharge time should not be greater than 10s ;
70L 无管网七氟丙烷灭火系统单位容积的充装量小于等于 1120kg/m ³。 l 70L pipeless heptafluoropropane fire extinguishing system is less than or equal to 1120kg / m³ per volume .