《βppr水力计算表》word版

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1、NFβPP-R空调工程水力计算上海英泰塑胶有限公司25管道水力计算4.5.1水力计算公式由下式计算得出：i=105Ch—1.85dj—4.87qg1.85式中i—管道单位长度水头损失（kPa/m）；dj—管道计算内径（m）；Ch—海澄-威廉系数，Ch=140；qg—设计流量（m3/s）。本条计算沿程阻力损失的公式引用《建筑给水聚丙烯管道工程技术规范》GB/T50349-2005为20％～30％；参照《建筑给水排水设计规范》GB50015-2003，则生活给水网为25％～30％，生产为20％。4.5.2管道计算内

2、径是根据不同的管系列S确定。为方便使用，表3.2.2-1列出了空调用NFβPP-R常用的四种管系列的计算内径。4.5.3水温修正系数K1按下式确定：K1=0.226式中—计算表格中采用的水的运动粘滞系数（cm2/s）；″—选用工作水温采用的水的运动粘滞系数（cm2/s）。4.5.4空调用NFβPP-R水利摩阻比钢管小,其粗糙系数n=0.0014～0.002,阻力系数为0.015～0.021，故选用流速时可适当提高,但不宜大于3.0m/s。附录A水力计算表A.0.1当管内水温为10℃时，NFβPP-R管水力计算表

3、分别按管系列S5、S4、S3.2编制,见本附录表A.0.1-1、A.0.1-2、A.0.1-3、A.0.1-4。A.0.2当管内水温为60℃时，NFβPP-R管水力计算表分别按管系列S5、S4、S3.2编制，见本附录表A.0.2-1、A.0.2-2、A.0.2-3、A.0.2-4。25表A.0.1-1空调用NFβPP-R管S5管系列水力计算表（10℃）iLdn(mm)2025324050637590110160(Pa/m)υ(m/s)Q(m3/h)υ(m/s)Q(m3/h)υ(m/s)Q(m3/h)υ(m/s)

4、Q(m3/h)υ(m/s)Q(m3/h)υ(m/s)Q(m3/h)υ(m/s)Q(m3/h)υ(m/s)Q(m3/h)υ(m/s)Q(m3/h)υ(m/s)Q(m3/h)100.090.070.100.120.120.320.140.420.160.810.191.400.212.210.233.560.266.040.3316.16200.130.100.120.180.180.340.200.610.241.170.272.030.303.210.345.170.388.790.4923.51300.160

5、.120.190.220.220.420.250.760.291.460.342.530.384.000.426.440.4810.940.6129.27400.190.140.220.260.260.500.290.890.341.710.392.950.444.670.497.520.5612.780.7134.19500.210.160.250.290.290.560.331.000.391.930.443.330.495.270.558.490.6314.420.8038.57600.240.180.2

6、70.320.320.620.371.110.432.130.493.680.555.810.619.370.7015.910.8842.57700.260.200.300.350.350.670.401.200.472.310.534.000.596.320.6710.180.7617.290.9646.27800.280.210.320.380.370.720.431.290.502.480.574.300.646.790.7110.950.8118.591.0349.37900.290.220.340.4

7、00.400.770.461.380.532.650.614.580.687.240.7611.660.8719.811.1053.001000.310.240.360.430.420.810.481.460.562.800.644.850.727.660.8112.350.9220.971.1656.101100.330.250.380.450.440.860.511.540.592.950.685.100.768.070.8513.000.9622.081.2259.071200.340.260.400.4

8、70.460.900.531.610.623.090.715.350.798.460.8913.631.0123.141.2861.921300.360.270.410.490.480.940.561.680.653.230.745.590.838.830.9314.231.0624.161.3464.651400.370.280.430.510.500.980.581.750.683