酒店喷淋水力计算书.doc

采用作用面积法计算K=80
中危险级1级
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/min
P-喷头处水压，MPa
K-喷头流量系数
2. 流速V
V=(4*Q)/(π*Dj*Dj)
式中：
Q-管段流量L/s
Dj-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*L
式中：
L-管段长度m
5. 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m(《自动喷水灭火系统设计规范》附录C)
6. 总损失
h=h(局)+h(沿)
7. 终点压力
Hn=Hn-1+h

管段名称起点压力mH2O管道流量L/s管长m当量长度管径mm水力坡降mH2O/m流速m/s损失mH2O终点压力mH2O1-26.001.033.000.50250.4621.941.627.622-37.622.191.800.30320.4492.310.958.5617-36.841.101.022.30250.5272.071.758.593-48.563.292.320.40321.0133.472.7611.3218-49.031.260.672.60250.6952.382.2711.304-511.324.550.832.10400.9213.622.7014.0119-206.001.031.951.30250.4621.941.507.5020-217.502.182.310.30320.4452.301.168.6622-217.001.110.962.30250.5392.091.768.7621-58.663.291.542.10321.0153.473.7012.365-614.017.843.900.80500.6813.693.2017.2123-246.001.033.001.30250.4621.941.997.9924-257.992.221.810.30320.4602.340.978.9627-257.161.121.052.30250.5512.121.859.0025-268.963.342.320.40321.0463.522.8411.8028-269.191.271.142.60250.7072.402.6411.8326-611.804.610.833.60400.9463.674.1915.9929-306.001.031.951.30250.4621.941.507.5030-317.502.182.310.30320.4452.301.168.6632-317.001.110.972.30250.5392.091.768.7631-68.663.291.543.60321.0153.475.2213.886-717.2115.743.900.80800.2893.171.3618.5733-346.001.033.001.30250.4621.941.997.9934-357.992.221.810.30320.4602.340.978.9637-357.161.121.022.30250.5512.121.838.9935-368.963.342.320.50321.0463.522.9511.9038-368.881.251.672.90250.6832.363.1212.0036-711.904.590.833.60500.2332.161.0312.947-818.5720.333.920.80800.4834.102.2820.858-920.8520.332.250.80800.4834.101.4722.329-1022.3220.331.570.80800.4834.101.1423.4710-1123.4720.331.040.80800.4834.100.8924.3611-1224.3620.332.940.90800.4834.101.8526.2112-1326.2120.333.480.901000.1102.350.4826.6913-1426.6920.330.420.901000.1102.350.1526.8414-1526.8420.331.936.401000.1102.350.9227.7615-1627.7620.332.501.601250.0361.530.1527.90
计算结果:
所选作用面积:161.9平方米
总流量