1、正压送风计算书防烟楼梯间防烟前室门窗类型洞高(m)洞宽(m)缝长(m)缝宽(m)数量(樘)漏风面积(m2)门窗类型洞高(m)单扇门a2.104.20.00400单扇门a2.2单扇门b2160.003510.021单扇门b2.1双扇门a0000.003300双扇门a2双扇门b0000.003300双扇门b2.1单层木窗11.5515.300双电梯门a2单层钢窗10210.900双电梯门b0双层木窗1.504.510.300单层木窗0双层钢窗1.504.57.600单层钢窗0面积小计F=2.000m2f=0.0210m2面积小计F=压差法计算Ly=N*0.827*f*P(1/b)*3600*1.2
2、5=17684m3/h压差法计算Ly=N*P=50Pab=2楼层数N=32P=25Pa风速法计算Lv=n*F*v*(1+b)*3600/a=16632m3/h风速法计算Lv=n*v=0.7m/s b=0.1 a=1开门数n=3v=0.7规范风量=25000 m3/H X0.75m3/h =11718.75规范风量=设计计算风量取值=17684m3/h参数取值已考虑1.1系数设计计算风量取值=隔层自垂百页风口面积=0.043858 m2 V=7.00m/s常闭正压送风口面积=自垂百页风口尺寸=300(mm)X146(mm)常闭正压送风口尺寸=送风竖井断面积=0.327475 m2 V=15.00
3、m/s送风竖井断面积=送风竖井断面尺寸=400(mm)X819(mm)送风竖井断面尺寸=送风主管v=15m/s 面积=0.327475 m2 尺寸=400 818.6883送风主管v=15风管水力计算环路编号流量矩型风管尺寸a矩型风管尺寸b直径或当量直径D流速V管长L送风口渐扩管（m3/h）（mm）（mm）（mm）（M/S）（M）个个1f楼梯间110510004255960.729.013f221110004255961.446.05f331610004255962.176.07f442110004255962.896.09f552610004255963.616.011f6632100042
4、55964.336.0通风及排烟房间名称 房间面积 层高换气次数 通风量排烟指标 排烟量主风管尺寸mm*mm(m2)(m)l/hm3/hm3/h.m2m3/h风速m/s=8车库10303618540 6l/h,h=3m18540400 1609.38房间11124.5150460672020087.5房间2131030120120401 2.59767洞宽(m)缝长(m)缝宽(m)数量(樘)漏风面积(m2)04.40.0020004.20.003001.28.40.00320.050406.30.003001.28.40.00520.0841.63.20.006001.5315.3001.53
5、10.9002.400m2f=0.1344m20.827*f*P(1/b)*3600*1.25=7503m3/hb=2楼层数N=32F*v*(1+b)*3600/a=19958m3/h防超压前室泄压面积为m/s b=0.1 a=1开门数n=322000 m3/H X1.75m3/h =2887528875m3/h参数取值已考虑1.1系数0.540m20.381944 m2 V=7.00m/s630(mm)X606(mm)0.534722 m2 V=15.00m/s425(mm)X1258(mm)m/s 面积=0.534722 m2 尺寸=630 848.7654多叶风量调节阀渐缩管直流三通旁流三通总阻力损失动压个个个个（Pa）（Pa）1111.60.3311.61.3313.62.9816.35.3019.88.28114.011.93主烟风管尺寸mm*mm风速m/s=18300 953.7037400 259.25934004.62963防烟前室P=25Pa设计计算风量取值=常闭正压送风口面积=常闭正压送风口尺寸=送风竖井断面积=送风竖井断面尺寸=
