喷淋计算K

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1、采用作用面积法计算K=80计算原理参照《自动喷水灭火系统设计规范GB50084-2001》，采用作用面积法基本计算公式1.喷头流量q=K*SQRT(10P)式中：q-喷头处节点流量，L/minP-喷头处水压，MPaK-喷头流量系数2.流速VV=(4*Q)/(兀*Dj*Dj)式中：Q-管段流量L/sDj-管道的计算内径(m)3.水力坡降i=0.00107*V*V/(pow(Dj,1.3)式中：i-每米管道的水头损失(mH20/m)V-管道内水的平均流速(m/s)Dj-管道的计算内径(m)4.沿程水头损失h=i

2、*L式中：L-管段长度m5.局部损失(采用当量长度法)h=i*L(当量)式中：L(当量)管段当量长度，单位长度，单位m(《自动喷水灭火系统设计规范》附录C）6.总损失h=h（局）+h（7右）7.终点压力Hn=Hn-1+h管段起点压管道流管长当量管径K水力坡降流速损失终点压力名称力mH2O量L/sm长度mmmH2O/mm/smH2OmH2O1-25.000.943.601.7025800.3851.772.047.042-37.042.051.441.8032800.3952.171.288.323-48.3

3、22.052.401.2032800.3952.171.429.7519-26.041.033.600.8025800.4651.942.058.09020-48.092.231.442.1032800.4652.351.659.744-59.754.281.873.7050800.2032.021.1310.8821-225.000.943.600.8025800.3851.771.696.69322-26.692.031.571.8032800.3852.141.30323-27.992.032.401

4、.2032800.3852.141.39425-25.781.013.600.8025800.4451.901.96626-27.742.181.572.1032800.4452.301.63424-59.374.200.793.7050800.1961.980.885-610.888.483.954.6080800.0841.710.7227-25.000.943.600.6025800.3851.771.62828-26.622.021.571.5025801.7803.805.46929-312.07

5、2.022.400.8025801.7803.805.69031-35.000.943.600.8025800.3851.771.69232-36.692.031.571.8032800.3852.141.30333-37.992.032.401.2032800.3852.141.39435-37.151.123.600.6025800.5502.122.31636-39.462.411.571.7025802.5444.558.31030-617.774.431.872.3032801.8444.687.

6、7037-35.781.013.600.8025800.4451.901.96838-37.742.181.572.1032800.4452.301.63434-69.374.200.793.7050800.1961.980.886-711.6017.121.504.6080800.3423.452.0939-48.231.213.600.8025800.6342.272.79040-411.022.601.572.1032800.6342.742.32141-713.342.600.793.7050800

7、.0751.220.347-813.6819.722.404.6080800.4543.973.1842-44.400.883.600.6025800.3391.661.42343-45.831.901.441.5025801.5683.574.61444-410.441.902.400.8025801.5683.575.027.999.377.749.3710.2511.606.6212.0717.776.697.999.379.4617.7725.477.749.3710.2513.6811.0213.

8、3413.6816.865.8310.443545-815.461.901.872.3032800.3372.001.4116.868-916.8621.623.904.6080800.5464.364.6421.509-1021.5021.622.275.4080800.5464.364.1925.6946-479.621.303.500.8025800.7412.453.1912.8147-4812.812.