风管压力损失计算

1、hh+.式中儿风管的沿程阻力(PQ;'%风管的局部阻力0)。hil-avaf(G-57)式中：拿位管长阻力(P"e),T-2(Kt标净压力凡IMPa时，i-67X(6-R)amL风管民理(m)ii取值如下表空气管沿程阻力损失喳流递阻力损失。(Pg衰口Q1小'tmmJ:二G4"50m!hm-7stjiVEq?I瓦U0.葡1&口fUiimw10*386.薨II,kxilK瓦67H.io，加c.>0304,呻11口口氏1口口002254.附19,SQ士00一.巨：力口5.ID24,509.9uU.a立¥泉<129.3U10.配n.m3

2、'I'&123tSO伍6uu.UC3SUMl购.册Id.WiLi?I.jB.60a7().IE,421%2Ct0.CkMB1IS76,Sft3.谒v.>1|工<|LLLHJ&t)打20S3,w3.WK.4u21.£tiU.J06O)2.21131.Jt.731),打3.O63.7625.加0,00701-U3l通005.立16心3.S?5,0320.800,0080时30227.0d.相3J.6Q儿福需56昭4UIL地限：ir>2心-Ou?.18Zi.lu4.5*JJS.盟31k(KTaoloo20.40M巩on7.第31*7(1&l

3、t;ijT他口了QPN(nur.)405075100150m3/hin34iuIvcVJri43.200.01209.5444.206.1214.265&400.C14011.2063.007.1419.253.172.4057.6CI0.016C12.8081.308.1624.803.623.0864.800.018014.100.009.1831.lu4.083.9272.000.020015.96121.0010.2038.V4.534.7781.000.022517.90153.0011.5047.705.095.95900.025019.90”9.0012.7559.105

4、.667.333.1A1.6899.UO0.U27514.t«470.505.238.753.502.020.030015.30RX2D6.8:1Ui.453.822.39126.UO0.035017.8B112.507.93I4.U54.4S».20144.000.04WZU.40144.509.0618.305.094.14152.000.045022.95181.001G.2C22705.72.18180.000.05011.3227.906.366.35216.CO0.06013.6C39-707.649.053.40114252.000.07015.8552.70

5、89112.133.1.52288.000.C8D18.11691010.1815.804.531.97324.UO20.35.0011.4519.555.C9Z47D<mm>QICO150283503003504grn3/hV1V*c*iV1*XVeI360.00i.10012.7223.905.66013.180.692432.000.I20IS.2734.406.794.贽3.82Ct935504.000.14017.8116.007.935.774.451.32576.000.16020.3559.709.057.115.091.703.270.5!4648.0018010

6、199305.？32.15：3.68c.m720.000.2811.3211.506.362.624.u8«>.S48IU.000.22512.751).la7.163.284.591.013.19仇119900.000.253Ml"17.W7.96-1.045.IC1.293.540.5C299U.00U.27515.5521.ia8.784.885.611.543.9U0.5M1080.(H)0.3W16.9s24.959.555.786.121.794.25u.7143.120.3271280.000.3501'J.6035.2011.137.687.1

7、42.4S4.960.9503.840.4381140.000.40OIZ.739.918.163.175.661.2351.160.5703.190.2851620.000.45011.3212.529.181.006.361.r168U.7123.590.3601830.CC0.50015.9115.3010.204.877.08L9G5.23工占二3.钟0.44C2160.00.(>no19.1021.112.246.S8&5O2.726.241.237&780.6282520.000.7M14.289.409.913.667.28l.tir.二S«0.8

8、472S80.00i.8g16.3011.9311.314718.32z.15;6.邻1784QDN(mni>25030。350too15。5OU6UOm'/hVt*.Ji今tV1V.1VJ1800.CO0.5003.15。.2如2160.tnO.frfK)3.78n.33.069.1962520.000.7004.400.4563.570.2652883.CO$uo5.030.5914.083.3423240.CO0.%Q18.3515.3012.755.909.352.707.181.3强5.66a7421.590.1283.190.1703600.CO1.03020.4(：

9、14.157.1»l：403.327.9()1.676.290.9h：5.190.5243.540.2093960.101.10015.578.6311.423.948.772.606.920.965.610.6313.XiI).2504320.COL2gP.OGL.二12.474.679.552.377.551.2936.1257434240.2W5040.CO1.40019.8C11.ir14.5G6.3511.173.17a801.737.141.r4.960.3955760.M1.600hi.618.1012.754.10Kj.062.258.161.285.660.5126

10、480.001.800IX.70Ic.Sci14.355.1511.322.829.181.636.370.6437200.COZ.8Q20.8012.W15.956.3312.583.4610.201.987.080.7898100.CO2.250l?.9O7.9514.154.3C11.502.487.96D.9839000.002.5CK)19.959.«O15.715.3012.7fiJ.088.加1.229900.CO2.75017.3。6.3811.043.6?9.751.461H80O.O3.000IS.877.55lx304.33io.611.7012600.003.

11、50017.855.8612.402.32M400,M4.00020.107.5211.152.98DX(nnn)6007008C。90c1000m”ViViiVtVi432cg1.2003.120.1405G4J(X)1.4W3.640.180576c.W)1.6004.160.2313.190.1180648C.CO1.8004.680.2923.580.14B57200.M2.ono，200.3573.9S0.1825"14a810c.凶2.2505.850.4504.480.2273.610.130900c.CO2.500队500.5504.980.2793.93015311

12、80.0873990c.M2.7507.150.6605.170.3364.320.182X500.10S51：U!.：3.0007.800.7805.970.3951.710.2131820.12112600.003.5009.101.0506.970.5305.500.2881.160.167144OD.OO1.00010.401.3707.970.6866.280.3725.090.2161620>.004.50015.933.7911.701.695&960.8617.070.4665.730.270isooi：.n：-：5.00014.6113.no2.D89.951.

13、0557.850.5696.37n.33119600.OC5.50019.475.5611.302.5210.451.178.6d0.6857.000.397216Ms6.00015.502.9711.951.519.42117.64O.>17225200.007.00018.193.9713.932.0211.001.118.910.635288.01；83。025785.1?15.912.6312.571.1213.200.82132400.009.00017.903.2814.131.77IL451.02一.：.；10.0M19.904.0415.702.1612.1.25396O

14、0.OD11.0IXI17.302.62H.001.5113200.00liOOO18.853.1015.281.8046800.01)IX(XXI20.423.16.532.0553400-00u.ow1812.4054000.0060001.062.7457600.01)1S.OOO20.353.12温度修正系数所依温度为TC时,空气密度的修正系数(见表612)；空气温度(V)空气海度COar!气温嗖(-201.1301.0730-151.1051.05200.98-101.09101.03400.95一51.。8151.。25。0.92表12/C、0-2(6-59)(6-60)*Y)温度

15、为C时的空气密度(kg/n?)?温度为20c时的空气密度(kg/m3)；-大气压力为。时的压力修正系数；%-(10X“3压力修正系效与值知值可由表6T3有得pMPa)品p(Ml、)p(MPa)程0.1001.000.1401.330.1801.650.1101.085aI5uL410.1901.730.12V1.17。1601.490.200l.?lU.13V1.25a17uI.S7豪6-13风菅的局部阻力儿.即按公式"61计算rhix10(661)式中e局部阻力系敌.见给水排水我计手册第1卅常用贲科：r一风管中平均空气流速Cm上hP-空气密度(冢，丁)当湿度为费七,压力为76。H3

16、J型I，时,空气密度为hMikg.n?-在其他情况下.中值可用公式(C02)试算1_L29力然273j<»乂IU=僚73+丁式甲P-空F葩时压力(MPfJcT空气册曳CCK1k缩空气的绝对1K力.可由公式(46乃计算：(6 63)人I+比+A.4-h.MLhT式中A、儿分别为风管的沿程阻力和局部阻力(kPah/r,充同装置(睡飞头)以上的曝气泡水深(kP#；也-充氧装矍的阻力(kPa，根据质验数据或有关提料确定事1)当地大气用力MR3根据当地胆有标病，由表611性将:不同地面标嘉的大餐压力表%r板鸟(|UQtoo2CG34>G4005006CiJ大气压力(kTal1。九1

17、l除1】略3IN,；99,3螂397.3也良idu.)7lXiyg1500aoo。大二压h<krj林3徐3!4.39X2敝2假1风机所需所力C-时IE力机可按公式(664)计吊“=h,一砥十%十电(6-64)此加根据设备和系境的耳体情况,尚宜此道适当剩余压力(2000-3000P&).沿程阻力计算,赤可利用图64"士取值如下表（2）压缩空气管道局部阻力系数£值，见表19-8;某些东缩空气管道的分支和断面突变示意,见图19-L质蜡空气管通局部殂力系败僮*198母部用力名称W局部用力名检£学曲学在小的学管1，转与十字皆3.0弯曲半径犬的§曾1.0异径管20。工1500.2华当瞥0.