重力流水流量速查表

一般工業用管路重力流以下列方程式來表示:其中:V代表管內平均流速(英呎/秒)R代表內水量的截面積(英呎)S代表斜率n代表影響流速的係數一般而言，影響流速的係數n以0.009來概估，然而，我們可以將這個值保守的估計為0.01，而水量截面積R可以下列公式計算出來其中:ID代表管內壁之直徑(英呎)f代表飽管係數(查表得知)一旦確定流速之後，流體的流量就可以下列公式計算出來:其中:Q=流量V=流速ID=管內壁直徑A=由上表所查得知A值nSRV5.0667.046.1IDfR0.25000.28640.29800.30330.30420.30170.29620.28810.27760.2649f0.78541.000.39270.25000.500.77070.950.34280.23310.450.74450.900.29340.21430.400.71150.850.24500.19350.350.67360.800.19820.17100.300.63190.750.15350.14660.250.58720.700.11180.12060.200.54040.650.07390.09290.150.49200.600.04090.06360.100.44260.55.001470.03260.05Ah/IDAfh/ID2IDAVQ0.083333(英呎)0.083333(英呎)0.250.78540.780638(英呎/秒)0.0208330.0050.01(概估為0.01)0.004258(立方英呎/秒，CFS)h/IDfA0.050.03260.001470.10.06360.04090.150.09290.07390.20.12060.11180.250.14660.15350.30.1710.19820.350.19350.2450.40.21430.29340.450.23310.34280.50.250.39270.550.26490.44260.60.27760.4920.650.28810.54040.70.29620.58720.750.30170.63190.80.30420.67360.850.30330.71150.90.2980.74450.950.28640.770710.250.7854Q流量AID管內徑h水位高f飽管係數V代表管內平均流速R代表內水量的截面積S代表斜率n代表影響流速的係數25.4公釐(mm)25.4公釐(mm)0.250.78540.237898公尺/秒(M/Sec)0.0208280.0050.01(概估為0.01)0.007225每分鐘立方公尺(CMM)0.433482每小時立方公尺(CMH)h/IDfA0.050.03260.001470.10.06360.04090.150.09290.07390.20.12060.11180.250.14660.15350.30.1710.19820.350.19350.2450.40.21430.29340.450.23310.34280.50.250.39270.550.26490.44260.60.27760.4920.650.28810.54040.70.29620.58720.750.30170.63190.80.30420.67360.850.30330.71150.90.2980.74450.950.28640.770710.250.7854Q流量AID管內徑h水位高f飽管係數V代表管內平均流速R代表內水量的截面積S代表斜率n代表影響流速的係數斜率0.005流量單位(CMH=M3/H)管徑水位高(inch)1/21/23/43/4111-1/41-1/41-1/21-1/2222-1/22-1/23344556688101012120.50.070.110.220.210.250.380.240.390.370.020.020.050.100.1610.430.720.971.381.311.592.401.542.512.324.210.161.51.282.513.364.064.606.217.065.409.806.8522.754.566.148.758.3410.1115.219.8015.932.55.007.9411.7515.8617.3921.7727.6428.6838.1215.9621.3125.8029.2239.4744.863.518.0326.5615.0237.4652.9844.86417.5028.9439.0255.5652.9864.194.532.7047.0565.0967.9286.16531.7350.4474.65100.75110.455.554.998