8A10A15A13.817.321.725.431.838.150.863.576.389.1101.6114.3139.8165.2216.31/4 B3/8 B1/2 B1.01.251.52.02.53.03.54.04.55.56.5sssssssssss管・液重量は管内に水（比重1.0として計算）が充満した場合の単位長 [m] 当りの重量を示す。比重の大きな流体の場合は管内容積に比重を掛け、管重量を加算して求めること。流速1m/sec時の流量は管内流量･流速･管口径計算に使用する。例1. 流量10m3/hで2sの管を使用した場合の流速は V = 10 [m3/h] ÷6.46 [(m3/h)/(1m/sec)] = 1.55m/sec例2. 2sの管を使用し、流速2m/secの場合の流量は Q = 6.46 [(m3/h)/(1m/sec)] × 2 [m/sec] = 12.9m3/h例3. 流量10m3/hで流速2m/secの場合の口径は 10 [m3/h]÷2 [m/sec] = 5 [(m3/h)/(1m/sec)] 上表で 5 [(m3/h)/(1m/sec)] に最も近い口径は2s。なお、口径選定の場合は、上限流速、許容圧力損失等のチェックを行う必要のあるケースもあり、要検討のこと。※1)※2)※1)※2)10.514.017.523.029.435.747.859.572.385.197.6108.3133.8159.2208.31.651.652.11.21.21.21.52.02.02.02.03.03.03.04.0 87154241415679100117952781410656887482921214061199063407863.081.112991.211513923238646754762610491289152926680.4990.6431.030.7230.9151.101.843.063.704.344.968.3210.212.121.20.0870.1540.2410.4150.6791.001.802.784.115.697.489.2114.119.934.10.5860.7971.271.141.592.103.645.847.8110.012.417.524.332.055.30.3120.5540.8681.492.443.606.4610.014.820.526.933.250.671.7122.7200A8B外 径O.D.[mm]内 径I.D.[mm]肉 厚Wallthickness[mm]内径面積Bore area[mm2]管断面積Pipe sectionalarea[mm2]A管重量Pipe weight[kg/m]B管内液容積Inside liquid volum[l/m]※1）A+B管液重量Gross weight[kg/m]※2）流速1m/sec時の流量[m3/h]Flow rate (in m3/h) when flow velocityis 1 m/sec呼び径NominalPipe sizeAB※※※The "Pipe & liquid weight" column of this table shows the gross weight per unit length (1m) of the pipe filled with water (assuming specific gravity of 1.0). If the actual fluid has a larger specific gravity, the gross weight per unit length must be calculated by adding the pipe net weight per unit length to the inside fluid volume multipled by the specific gravity.The data in the rightmost column, "flow rate (in m3/h) when velocity is 1 m/sec", is intended for use when calculating the inside flow rate, flow velocity, and required diameter (size).EXAMPLE 1: Where the pipe size is 2s and the flow rate is 10m3/h, the flow velocity will be :V = 10 [m3/h] ÷6.46 [(m3/h)/(1m/sec)] = 1.55m/secEXAMPLE 2: Where the pipe size is 2s and the flow velocity is 2m/sec, the flow rate will be :Q = 6.46 [(m3/h)/(1m/sec)] × 2 [m/sec] = 12.9m3/hEXAMPLE 3: Where the flow rate is 10m3/h and the flow velocity is approximately 2m/sec, the required diameter (size) will be :10 [m3/h] ÷2 [m/sec] = 5 [(m3/h)/(1m/sec)]In the table above, tha size that provides e diameter closest to 5 [(m3/h)/(m/sec)] is 2s.There are occasions when the maximum flow velocity and permissible pressure loss affect the required diameter (size). Therefore, these factors should also be carefully studied when selecting the optimum pipe size.※JIS G 3459 3-99-2サニタリーパイプデータ JIS G 3447Sanitary Pipe Data JIS G 34473-99 Pipes,Fitting and Tools Technical Information
元のページ ../index.html#5