正压送风计算书防烟楼梯间防烟门窗类型门窗类型2.104.20.004002.22160.003510.0212.10000.00330020000.0033002.1单层木窗11.5515.3002单层钢窗10210.9000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=0.827*f*△P(1/b)*3600*1.25=17684m3/h△P=50Pab=232△P=25PaF*v*(1+b)*3600/a=16632m3/hv=0.7m/sb=0.1a=13v=0.725000m3/HX0.75m3/h=11718.7517684m3/h0.043858m2V=7.00m/s300(mm)X146(mm)0.327475m2V=15.00m/s400(mm)X819(mm)150.327475400818.688315风管水力计算环路编号流量送风口渐扩管个个110510004255960.729.013f221110004255961.446.05f331610004255962.176.07f442110004255962.896.09f552610004255963.616.011f663210004255964.336.0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(m2)(m)l/hm3/hm3/h.m2m3/h8车库103036185406l/h,h=3m185404001609.381124.5150460672020087.51310301201204012.59767洞高(m)洞宽(m)缝长(m)缝宽(m)数量(樘)漏风面积(m2)洞高(m)单扇门a单扇门a单扇门b单扇门b双扇门a双扇门a双扇门b双扇门b双电梯门a双电梯门b压差法计算Ly=N*压差法计算Ly=N*楼层数N=风速法计算Lv=n*风速法计算Lv=n*开门数n=规范风量=规范风量=设计计算风量取值=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=常闭正压送风口面积自垂百页风口尺寸=常闭正压送风口尺寸送风竖井断面积=送风竖井断面积送风竖井断面尺寸=送风竖井断面尺寸送风主管v=m/s面积=m2尺寸=送风主管v=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（m3/h）（mm）（mm）（mm）（M/S）（M）1f楼梯间主风管尺寸mm*mm风速m/s=房间1房间2防烟前室04.40.0020004.20.003001.28.40.00320.050406.30.003001.28.40.00520.0841.63.20.006001.5315.3001.5310.9002.400m2f=0.1344m20.827*f*△P(1/b)*3600*1.25=7503m3/h△P=25Pab=232F*v*(1+b)*3600/a=19958m3/hm/sb=0.1a=1322000m3/HX1.75m3/h=2887528875m3/h0.540m20.381944m2V=7.00m/s630(mm)X606(mm)0.534722m2V=15.00m/s425(mm)X1258(mm)0.534722630848.7654渐缩管直流三通旁流三通总阻力损失动压个个个个1111.60.3311.61.3313.62.9816.35.3019.88.28114.011.9318300953.7037400259.25934004.62963洞宽(m)缝长(m)缝宽(m)数量(樘)漏风面积(m2)楼层数N=防超压前室泄压面积为开门数n=设计计算风量取值=参数取值已考虑1.1系数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=m/s面积=m2尺寸=多叶风量调节阀（Pa）（Pa）主烟风管尺寸mm*mm风速m/s=
