1.计算依据
假定流速法是以风道内空气流速作为控制指标，计算出风道的断面尺寸和压力损失，再按各环路间的压损差值进行2.计算公式
a.计算摩擦阻力系数的公式采用的是柯列勃洛克－怀特公式。b.管段损失 ＝ 沿程损失＋局部损失 即：Pg ＝ ΣPl + ΣPd。c.Pdn ＝ Pd1＋ Σ(Pm×L＋ Pz)。3.计算结果
风管水力计算表（假定流速法）编号 管段0管段1管段2管段3管段4管段5管段6管段7管段8管段9管段10管段11管段12管段13管段14管段15管段16管段17管段18管段19管段20管段21风量(m^3/h)风速(m/s)856.50702.28581.34460.40394.90329.40263.90131.0065.5065.5079.0575.1765.5055.4455.4465.5065.5065.5065.5067.4065.5065.506.206.506.736.665.716.355.092.531.261.261.521.451.261.071.071.261.261.261.261.301.261.26Rm(Pa/m)2.973.574.194.603.454.983.290.910.260.260.360.330.260.190.190.260.260.260.260.270.260.26宽(mm) 320.00250.00200.00160.00160.00120.00120.00120.00120.00120.00120.00120.00120.00120.00120.00120.00120.00120.00120.00120.00120.00120.00高(mm) 120.00120.00120.00120.00120.00120.00120.00120.00120.00120.00120.00120.00120.00120.00120.00120.00120.00120.00120.00120.00120.00120.00长(m)1.991.337.071.337.071.337.071.337.083.893.894.113.893.313.313.893.893.893.893.613.893.89ζ 0.000.050.050.040.090.130.130.990.970.2114.4315.8924.2634.5637.1526.0825.5317.6523.1013.4114.193.11△Pd(Pa)0.001.271.361.061.763.152.023.790.930.2020.1320.0523.2423.7225.4924.9824.4516.9122.1313.6013.592.984.计算汇总
当前最不利环路的阻力损失为125.87 Pa。
值进行调整，以达到平衡。
△Pl(Pa)5.904.7529.616.1324.376.6423.231.211.851.011.421.371.010.640.641.021.011.011.010.991.011.01△P(Pa)5.906.0230.977.2026.139.7825.255.002.781.2221.5521.4224.2524.3626.1426.0025.4717.9223.1414.5914.613.99
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