DB61 296-2002 洁净气体IG541灭火系统设计、施工、验收规范

)100100(C-)(gooVVV+)(gooVVV+)(gooVVV+Tpn+1·24QDpnnr21nr211+nr·2214QDpnnn+rr·211+nr·nnrr1+·21+nDfLrf=2)lg274.1(41DΔ-Tn+1=Tn426102897.0DQ×××(21211+-nnrr)Tn+1——IG541KTn——IG541K