实用水泵计算选型

冷冻水泵选型计算书CHWP-1.2.3.41 .扬程计算其中:H：水泵扬程（mH2O）序号管路规格管径(m)长度(m)流速(m/s)比磨阻力（pa/m)沿程阻力(pa)沿程阻力(mH2O)备注一、H1=Σ管长*比摩阻（mH2O）H1H1=L*hfDN4500.4537.62.00823083.20.31 制冷机房1DN3500.3654.742.00965255.040.53 制冷机房2DN1500.1525.82.002917507.80.75 制冷机房3DN1500.151702.00291494704.95 地下一层4DN1500.15642.00291186241.86 1-4m管井5DN1500.1522.52.002916547.50.65 4mf6DN1250.125101.8029829800.30 4mf7DN1000.1111.8039443340.43 4mf8DN800.08231.5036183030.83 4mf9DN500.05171.1033957630.58 4mf10DN250.02511.70.70343.004013.10.40 5f11DN250.0253.70.70343.001269.10.13 6f12DN250.0253.70.70343.001269.10.13 7f13DN320.0323.70.95428.001583.60.16 8fH=（（H1+H2）+H3）*1.1（mH2O）H1：管路沿程阻力（mH2O）H2：管路局部阻力（mH2O）附表4：H3 ：设备阻力（蒸发器+末端）最不利环路选择：制冷主机-水泵-分水器-地下供水管路-1-4mf管井-塔楼竖井-RF新风机组X/RF-03-管井-地下室-集水器-制冷主机（典型环路）冷冻水泵计算表2006年4月25日14DN320.0323.70.95428.001583.60.16 9f15DN400.0423.70.95358.001324.60.13 10f16DN400.0423.70.95358.001324.60.13 11f17DN400.0423.70.95358.001324.60.13 12f18DN500.053.71.10339.001254.30.13 13f19DN500.053.71.10339.001254.30.13 14f20DN500.053.71.10339.001254.30.13 15f21DN500.053.71.10339.001254.30.13 16f22DN500.053.71.10339.001254.30.13 17f23DN500.053.71.10339.001254.30.13 18f24DN500.053.71.10339.001254.30.13 19f25DN500.053.71.10339.001254.30.13 20f26DN500.053.71.10339.001254.30.13 21f27DN500.053.71.10339.001254.30.13 22f28DN500.058.71.10339.002949.30.29 23f29DN650.0698.71.40394.003427.80.34 RF30DN800.0891.50361.0032490.32 RF31DN1000.141.80394.0015760.16 RF35DN1500.15142.00291.0040740.41 RF44DN1500.1571.52.00291.0020806.52.08 RF-4M管井合计626.1417.42H2序号部件 规格 数量流速V(m/s)局部阻力系数ζ单位阻力（pa/个)局部阻力(pa)局部阻力(mH2O)1弯头 DN35062.000.265203120.000.312弯头 DN25022.000.265201040.000.103弯头 DN20022.000.265201040.000.104弯头 DN150202.000.2652010400.001.045弯头 DN12541.800.264211684....