1、局部阻力系数计算-取值不超过表格注:1.民规GB50736 第6.6.11条,曲率半径不宜小于1.5倍风管边长,施工质量验收规范是1.0倍。2.引用实用供热空调设计手册第二版P1099P1138B12 弯头 H/Wr/W 0.25 0.50 0.75 1.00 1.500.50 1.53 1.38 1.29 1.18 1.060.75 0.57 0.52 0.48 0.44 0.401.00 0.27 0.25 0.23 0.21 0.191.50 0.22 0.20 0.19 0.17 0.152.00 0.20 0.18 0.16 0.15 0.14B17 W1/W0H/W0 0.6 0.
2、8 1.0 1.2 1.40.25 1.76 1.43 1.24 1.14 1.091.00 1.70 1.36 1.15 1.02 0.954.00 1.46 1.10 0.90 0.81 0.76100.00 1.50 1.04 0.79 0.69 0.63B18 W0/W1H/W1 0.6 0.8 1.0 1.2 1.40.25 0.63 0.92 1.24 1.64 2.141.00 0.61 0.87 1.15 1.47 1.864.00 0.53 0.70 0.90 1.17 1.49100.00 0.54 0.67 0.79 0.99 1.23C3 变径 F0/F1 10 15
3、20 30 450.06 0.3 0.54 0.53 0.65 0.770.1 0.30 0.5 0.53 0.64 0.750.25 0.25 0.36 0.45 0.52 0.580.5 0.15 0.21 0.25 0.3 0.331.0 0.00 0.00 0.00 0.00 0.002.0 0.24 0.28 0.26 0.2 0.224.0 0.89 0.78 0.79 0.70 0.886.0 1.89 1.67 1.59 1.49 1.9810.0 5.09 5.32 5.15 5.05 6.5C4 变径 F0/F1 10 15 20 30 450.1 0.05 0.05 0.
4、05 0.05 0.070.17 0.05 0.05 0.05 0.04 0.060.25 0.06 0.05 0.05 0.04 0.060.5 0.06 0.07 0.07 0.05 0.061.0 0.00 0.00 0.00 0.00 0.002.0 0.6 0.84 1.00 1.2 1.324.0 4 5.76 7.2 8.32 9.2810.0 30.00 50.00 53.00 64.00 75.0016.0 76.80 138.24 135.68 166.4 197.12C5 变径 F0/F1 10 15 20 30 450.06 0.3 0.54 0.53 0.65 0.7
5、70.1 0.3 0.5 0.53 0.64 0.750.25 0.25 0.36 0.45 0.52 0.580.5 0.15 0.21 0.25 0.3 0.331.0 0.00 0.00 0.00 0.00 0.002.0 0.24 0.28 0.26 0.2 0.224.0 0.89 0.78 0.79 0.70 0.886.0 1.89 1.67 1.59 1.49 1.9810.0 5.09 5.32 5.15 5.05 6.5C6 变径 F0/F1 10 15 20 30 450.1 0.05 0.05 0.05 0.05 0.070.17 0.05 0.05 0.04 0.04
6、 0.060.25 0.06 0.05 0.05 0.04 0.060.5 0.06 0.07 0.07 0.05 0.061.0 0.00 0.00 0.00 0.00 0.002.0 0.6 0.84 1.00 1.2 1.324.0 4.00 5.76 7.2 8.32 9.2810.0 30.00 50.00 53.00 64.00 75.0016.0 76.80 138.24 135.68 166.4 197.12C7 变径 F0/F1 10 15 20 30 450.06 0.26 0.27 0.4 0.56 0.710.1 0.24 0.26 0.36 0.53 0.690.25
7、 0.17 0.19 0.22 0.42 0.60.5 0.14 0.13 0.15 0.24 0.351.0 0.00 0.00 0.00 0.00 0.002.0 0.23 0.2 0.2 0.2 0.244.0 0.81 0.64 0.64 0.64 0.886.0 1.82 1.44 1.44 1.44 1.9810.0 5.03 5.00 5.00 5.00 6.5C8 变径 F0/F1 10 15 20 30 450.1 0.05 0.05 0.05 0.05 0.070.17 0.05 0.04 0.04 0.04 0.050.25 0.05 0.04 0.04 0.04 0.0
8、60.5 0.06 0.05 0.05 0.05 0.061.0 0.00 0.00 0.00 0.00 0.002.0 0.56 0.52 0.60 0.96 1.44.0 2.72 3.04 3.52 6.72 9.6010.0 24.00 26.00 36.00 53.00 69.0016.0 66.56 69.12 102.4 143.36 181.76C9 渐扩变径形式 双面偏 单面偏A2/A1 2.082.001.671.561.331.252.082.001.671.56 0.16 0.09 0.02 0.28 0.17C10 渐缩变径形式 双面偏 单面偏A2/A1 2.082.
9、001.671.561.331.252.082.001.671.56 0.09 0.08 0.04 0.11 0.1E1 合流Lb/Lc 0.1 0.2 0.3 0.4 0.5b -12.25 -1.31 0.64 0.94 1.27Ls/Lc 0.1 0.2 0.3 0.4 0.5s 2.15 11.91 6.54 3.74 2.23E2 合流Lb/Lc 0.1 0.2 0.3 0.4 0.5b -18 -3.25 -0.64 0.53 0.76Ls/Lc 0.1 0.2 0.3 0.4 0.5s 2.15 11.91 6.54 3.75 2.23E3 合流Fb/Fc 0 0.5 1.0 1
10、b 0 0.23 0.28 0.28E4 合流旁通管 Lb/LcFb/Fc Fb/Fs 0.1 0.2 0.3 0.40.25 0.25 -0.5 0 0.5 1.20.25 0.33 -1.20 -0.4 0.4 1.60.5 0.5 -0.5 -0.2 0 0.250.5 0.67 -1 -0.6 -0.2 0.10.5 1.0 -2.2 -1.5 -0.95 -0.51.0 1.0 -0.6 -0.3 -0.1 -0.041.0 1.33 -1.2 -0.8 -0.4 -0.201.0 2 -2.10 -1.4 -0.9 -0.5直通管 Ls/LcFb/Fc Fs/Fc 0.1 0.2
11、0.3 0.40.25 0.75 0.3 0.3 0.2 -0.10.5 1.0 0.17 0.16 0.1 00.5 0.75 0.27 0.35 0.32 0.250.5 0.5 1.2 1.1 0.9 0.651.0 1.0 0.18 0.24 0.27 0.261.0 0.75 0.75 0.36 0.38 0.351.0 0.5 0.8 0.87 0.8 0.68E5 分流旁通管 Lb/LcFs/Fc Fb/Fc 0.1 0.2 0.3 0.40.5 0.25 3.44 0.7 0.3 0.20.5 0.5 11.00 2.37 1.06 0.640.5 1 60 3 4.78 2.
12、060.75 0.25 2.19 0.55 0.35 0.310.75 0.5 13 2.5 0.89 0.470.75 1 70 15 5.67 2.621 0.25 3.44 0.78 0.42 0.331 0.5 15.50 3 1.11 0.621 1 67.00 13.75 5.11 2.31直通管 Ls/LcFs/Fc Fb/Fc 0.1 0.2 0.3 0.40.5 0.25 8.75 1.62 0.5 0.170.5 0.5 7.5 1.12 0.25 0.060.5 1 5 0.62 0.17 0.080.75 0.25 19.13 3.38 1 0.280.75 0.5 2
13、0.81 3.23 0.75 0.140.75 1 16.88 2.81 0.63 0.111 0.25 46 9.5 3.22 13.101 0.5 35.00 6.75 2.11 0.751 1 38 7.5 2.44 0.81E6 分流旁通管 Lb/LcFb/Fc 0.1 0.2 0.3 0.4 0.50.1 0.6 0.52 0.57 0.58 0.640.2 2.24 0.56 0.44 0.45 0.510.3 5.94 1.08 0.52 0.41 0.440.4 10.56 1.88 0.71 0.43 0.350.5 17.75 3.25 1.14 0.59 0.40.6 2
14、6.64 5.04 1.76 0.83 0.50.7 37.73 7.23 2.56 1.16 0.670.8 49.92 9.92 3.48 1.6 0.87直通管Ls/Lc 0.1 0.2 0.3 0.4 0.5s 32 6.5 2.22 0.87 0.4E7 分流旁通管 Lb/LcFb/Fc 0.1 0.2 0.3 0.4 0.50.1 2.06 1.2 0.99 0.87 0.880.2 5.16 1.92 1.28 1.03 0.990.3 10.26 3.13 1.78 1.28 1.160.4 15.84 4.36 2.24 1.48 1.110.5 24.25 6.31 3.0
15、3 1.89 1.350.6 34.56 8.73 4.04 2.41 1.640.7 46.55 11.51 5.17 3.00 2.000.8 60.80 14.72 6.54 3.72 2.41直通管Ls/Lc 0.1 0.2 0.3 0.4 0.5s 32 6.5 2.22 0.87 0.4E8 分流旁通管 Lb/LcFb/Fc 0.1 0.2 0.3 0.4 0.50.1 1.58 0.94 0.83 0.79 0.770.2 4.20 1.58 1.1 0.94 0.870.3 8.63 2.67 1.58 1.2 1.030.4 1485 4.2 2.25 1.58 1.270.
16、5 22.87 6.19 3.13 2.07 1.580.6 32.68 8.63 4.20 2.67 1.960.7 44.3 11.51 5.48 3.38 2.410.8 57.71 14.85 6.95 4.2 2.940.9 72.92 18.63 8.63 5.14 3.53直通管 Ls/LcFs/Fc 0.1 0.2 0.3 0.4 0.50.1 0.04 0 0 0 00.2 0.98 0.04 0 0 00.3 3.48 0.31 0.04 0 00.4 7.55 0.98 0.18 0.04 00.5 13.18 2.03 0.49 0.13 0.040.6 20.38 3
17、.48 0.98 0.31 0.10.7 29.15 5.32 1.64 0.60 0.230.8 39.48 7.55 2.47 0.98 0.420.9 51.37 10.17 3.48 1.46 0.67E9 分流旁通管 Lb/LcFb/Fc 0.1 0.2 0.3 0.4 0.50.1 0.73 0.34 0.32 0.34 0.340.2 3.10 0.73 0.41 0.34 0.320.3 7.59 1.65 0.73 0.47 0.370.4 14.2 3.1 1.28 0.73 0.510.5 22.92 5.08 2.07 1.12 0.730.6 33.76 7.59 3
18、.10 1.65 1.030.7 46.71 10.63 4.36 2.31 1.420.8 61.79 14.2 5.86 3.1 1.90.9 78.98 18.29 7.59 4.02 2.46直通管 Ls/LcFs/Fc 0.1 0.2 0.3 0.4 0.50.1 0.04 0 0 0 00.2 0.98 0.04 0 0 00.3 3.48 0.31 0.04 0 00.4 7.55 0.98 0.18 0.04 00.5 13.18 2.03 0.49 0.13 0.040.6 20.38 3.48 0.98 0.31 0.10.7 29.15 5.32 1.64 0.60 0.
19、230.8 39.48 7.55 2.47 0.98 0.420.9 51.37 10.17 3.48 1.46 0.67E10 分流Fb/Fc 0 0.5 1.0 1b 0 0.3 1 1L1圆形蝶阀 D/D0 0 10 20 30 400.5 0.19 0.27 0.37 0.49 0.610.6 0.19 0.32 0.48 0.69 0.940.7 0.19 0.37 0.64 1.01 1.510.8 0.19 0.45 0.87 1.55 2.60.9 0.19 0.54 1.22 2.51 4.971.0 0.19 0.67 1.76 4.38 11.2矩形蝶阀 H/W 0 10
20、 20 30 400.12 0.04 0.3 1.1 3.0 8.00.25 0.08 0.33 1.18 3.3 9.01 0.08 0.33 1.18 3.3 9.02 0.13 0.35 1.3 3.6 10.0L3 多叶阀 l/R 0 10 20 30 400.3 0.52 0.79 1.49 2.20 4.950.4 0.52 0.84 1.56 2.25 5.030.5 0.52 0.88 1.62 2.35 5.110.6 0.52 0.92 1.66 2.45 5.200.8 0.52 0.96 1.69 2.55 5.301.0 0.52 1.00 1.76 2.66 5.4
21、01.5 0.52 1.08 1.83 2.78 5.44L4 多叶阀 l/R 0 10 20 30 400.3 0.52 0.79 1.91 3.77 8.550.4 0.52 0.85 2.07 4.61 10.420.5 0.52 0.93 2.25 5.44 12.290.6 0.52 1 2.46 5.99 14.150.8 0.52 1.08 2.66 6.96 18.181.0 0.52 1.17 2.91 7.31 20.251.5 0.52 1.38 3.16 9.51 27.562.00 3.00 4.00 5.00 6.00 8.001.00 1.00 1.06 1.12
22、 1.16 1.18 B12 弯头0.39 0.39 0.40 0.42 0.43 0.44 r/W 0.50.18 0.18 0.19 0.20 0.21 0.21 H/W 80.14 0.14 0.15 0.16 0.17 0.17 1.180.13 0.13 0.14 0.14 0.15 0.151.6 2.01.06 1.06 B170.90 0.84 H/W0 10.72 0.66 W1/W0 20.60 0.55 0.841.6 2.02.17 4.24 B182.30 3.36 H/W1 1001.84 2.64 W0/W1 21.54 2.20 2.2C3 变径60 90 12
23、0 150 180 F0/F1 0.50.88 0.95 0.98 0.98 0.93 100.84 0.89 0.91 0.91 0.88 0 0.150.62 0.64 0.64 0.64 0.640.33 0.33 0.32 0.31 0.30.00 0.00 0.00 0.00 0.000.24 0.49 0.73 0.97 1.041.12 2.72 4.33 5.62 6.582.52 6.51 10.14 13.05 15.148.05 19.06 29.07 37.08 43.05C4 变径60 90 120 150 180 F0/F1 0.50.08 0.19 0.29 0.
24、37 0.43 100.07 0.18 0.28 0.36 0.42 0 0.060.07 0.17 0.27 0.35 0.410.06 0.12 0.18 0.24 0.260.00 0.00 0.00 0.00 0.001.32 1.32 1.28 1.24 1.29.92 10.24 10.24 10.24 10.2484.00 89.00 91.00 91.00 88.00225.28 243.2 250.88 250.88 238.08C5 变径60 90 120 150 180 F0/F1 0.50.88 0.95 0.98 0.98 0.93 10注:1.民规GB50736 第
25、6.6.11条,曲率半径不宜小于1.5倍风管边长,施工质量验收规范是1.0倍。H/WW1/W0W0/W10.84 0.89 0.91 0.91 0.88 0 0.150.62 0.64 0.64 0.64 0.640.33 0.33 0.32 0.31 0.30.00 0.00 0.00 0.00 0.000.24 0.49 0.73 0.97 1.041.12 2.72 4.33 5.62 6.582.52 6.51 10.14 13.05 15.148.05 19.06 29.07 37.08 43.05C6 变径60 90 120 150 180 F0/F1 0.50.08 0.19 0
26、.29 0.37 0.43 100.07 0.18 0.28 0.36 0.42 0 0.060.07 0.17 0.27 0.35 0.410.06 0.12 0.18 0.24 0.260.00 0.00 0.00 0.00 0.001.32 1.32 1.28 1.24 1.29.92 10.24 10.24 10.24 10.2484.00 89.00 91.00 91.00 88.00225.28 243.2 250.88 250.88 238.08C7 变径60 90 120 150 180 F0/F1 0.50.86 1.00 0.99 0.98 0.98 100.82 0.93
27、 0.93 0.92 0.91 0 0.140.68 0.7 0.69 0.67 0.660.37 0.38 0.37 0.36 0.350.00 0.00 0.00 0.00 0.000.28 0.54 0.78 1.02 1.091.12 2.78 4.38 5.65 6.62.53 6.56 10.20 13.00 15.208.02 19.1 29.1 37.1 43.1C8 变径60 90 120 150 180 F0/F1 0.50.08 0.19 0.29 0.37 0.43 100.07 0.18 0.28 0.36 0.42 0 0.060.07 0.17 0.27 0.35
28、 0.410.07 0.14 0.2 0.26 0.270.00 0.00 0.00 0.00 0.001.48 1.52 1.48 1.44 1.410.88 11.2 11.04 10.72 10.5682.00 93.00 93.00 92.00 91.00220.16 256.00 253.44 250.88 250.881.331.250.051.331.250.05单面偏单面偏E1 合流0.6 0.7 0.8 0.9 1.0 1 Lb/Lc 11.43 1.4 1.45 1.52 1.49 1.49 1.490.6 0.7 0.8 0.9 0.9 Ls/Lc 11.33 0.76
29、0.38 0.1 0.1 0.1E2 合流0.6 0.7 0.8 0.9 1.0 1 Lb/Lc 10.79 0.93 0.79 0.9 0.91 0.91 0.910.6 0.7 0.8 0.9 0.9 Ls/Lc 0.11.33 0.76 0.38 0.1 0.1 2.15E3 合流Fb/Fc 0.1 0.046E4 合流Fb/Fc 10.5 0.6 0.7 0.8 0.9 Fb/Fs 1.332.2 3.7 5.8 8.4 11 Lb/Lc 0.13 4.8 6.8 8.9 11 -1.20.45 0.7 1 1.85 20.3 0.6 1.00 1.5 20 0.4 0.8 1.3 1
30、.90.13 0.21 0.29 0.36 0.420 0.16 0.24 0.32 0.38-0.2 0 0.2 0.25 0.3Fb/Fc 0.25Fs/Fc 0.750.5 0.6 0.7 0.8 0.9 Lb/Lc 0.9-0.45 -0.92 -1.5 -2 -2.6 -2.6-0.08 -0.18 -0.27 -0.37 -0.460.12 -0.03 -0.23 -0.42 -0.580.35 0 -0.4 -0.8 -1.30.23 0.18 0.1 0 -0.120.27 0.18 0.05 -0.08 -0.220.55 0.4 0.25 0.08 -0.10.5 0.6
31、0.7 0.8 0.9 Fs/Fc 10.17 0.16 0.16 0.17 0.18 Fb/Fc 0.50.52 0.47 0.47 0.47 0.48 Lb/Lc 0.10.96 0.47 0.31 0.27 0.26 15.50.33 0.35 0.36 0.37 0.390.34 0.31 0.32 0.36 0.431.36 0.78 0.53 0.41 0.36Lb/LcLs/LcLb/Lc0.30 0.31 0.4 0.42 0.460.48 0.42 0.4 0.42 0.461.28 0.81 0.59 0.47 0.460.5 0.6 0.7 0.8 0.9 Fs/Fc 1
32、0.05 0 -0.02 -0.02 0 Fb/Fc 0.50.05 0.09 0.14 0.19 0.22 Lb/Lc 0.10.08 0.09 0.12 0.15 0.19 350.05 -0.02 -0.02 0 0.06-0.02 -0.05 -0.05 -0.02 0.03-0.02 -0.05 0.01 0 0.070.52 0.14 -0.02 -0.05 -0.010.24 0 -0.1 -0.09 -0.040.24 -0.03 -0.08 -0.06 -0.020.6 0.7 0.8 0.90.67 0.7 0.71 0.73 E7 分流0.54 0.58 0.6 0.62
33、 Fb/Fc 0.50.46 0.49 0.52 0.54 Lb/Lc 0.80.31 0.31 0.32 0.34 b 0.30.31 0.3 0.3 0.310.36 0.32 0.3 0.30.44 0.35 0.31 0.30.55 0.42 0.35 0.320.6 0.8 1 1 Ls/Lc 0.250.17 0.03 0 0 4.360.6 0.7 0.8 0.90.87 0.87 0.86 0.86 E7 分流0.94 0.92 0.9 0.89 Fb/Fc 0.51.06 1.01 0.97 0.94 Lb/Lc 0.80.88 0.8 0.75 0.72 b 0.841.0
34、3 0.91 0.84 0.781.22 1.04 0.94 0.871.44 1.2 1.06 0.961.69 1.38 1.2 1.070.6 0.8 1 1 Ls/Lc 10.17 0.03 0 0 00.6 0.7 0.8 0.90.76 0.76 0.76 0.75 E8 分流0.83 0.8 0.79 0.78 Fb/Fc 0.50.94 0.88 0.85 0.83 Lb/Lc 0.81.1 1.00 0.94 0.9 b 1.061.32 1.16 1.06 0.991.58 1.35 1.2 1.11.89 1.58 1.38 1.24Ls/LcLb/LcLb/LcLb/L
35、c2.25 1.84 1.58 1.42.67 2.14 1.81 1.580.6 0.7 0.8 0.90 0 0 00 0 0 0 Fs/Fc 0.50 0 0 0 Ls/Lc 0.10 0 0 0 b 13.180 0 0 00.04 0 0 00.09 0.04 0 00.18 0.08 0.04 00.31 0.15 0.07 0.040.6 0.7 0.8 0.90.37 0.38 0.39 0.4 E9 分流0.32 0.33 0.34 0.35 Fb/Fc 0.50.34 0.32 0.32 0.32 Lb/Lc 0.10.41 0.36 0.34 0.32 b 22.920.
36、54 0.44 0.38 0.350.73 0.56 0.47 0.410.98 0.73 0.58 0.491.28 0.94 0.73 0.61.65 1.19 0.91 0.730.6 0.7 0.8 0.90 0 0 00 0 0 0 Fs/Fc 0.330 0 0 0 Ls/Lc 0.10 0 0 0 b 4.7010 0 0 00.04 0 0 00.09 0.04 0 00.18 0.08 0.04 00.31 0.15 0.07 0.04E10 分流Fb/Fc 1 1.0050 60 70 75 80 85 900.74 0.86 0.96 0.99 1.02 1.04 1.0
37、4 L1 蝶阀1.21 1.48 1.72 1.82 1.89 1.93 2 D/D0 0.52.12 2.81 3.46 3.73 3.94 4.08 6 0.14.13 6.14 8.38 9.4 10.3 10.8 15 0.19089.57 17.8 30.5 38 45 50.1 10032 113 619 2010 10350 99999 99999Ls/LcLb/LcLs/Lc50 60 65 70 90 L1 蝶阀23.0 60.0 100.0 190.0 99999 H/W 0.526.0 70.0 128.0 210.0 99999 0.126.0 70.0 128.0 2
38、10.0 99999 0.082529.0 80.0 155.0 230.0 9999950 60 70 808.73 14.15 32.11 122.06 L3 平行多叶阀9.00 16.00 37.73 156.58 l/R 0.59.52 18.88 44.79 187.85 109.77 21.75 53.78 288.89 0.8810.03 22.80 65.46 295.2210.53 23.84 73.23 361.0011.21 27.56 97.41 495.3150 60 70 8019.46 70.12 295.21 807.23 L4 对开多叶阀26.73 92.90 346.25 926.34 l/R 0.533.99 118.91 393.36 1045.44 1041.26 143.69 440.25 1163.09 0.9356.47 193.92 520.27 1324.8571.68 245.45 576.00 1521.00107.41 361.00 717.05 1804.40