中央空调-管段阻力计算.docx

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1、风量L管长初选风速管道尺寸当量实际流速单位长度摩擦阻力动压局部阻力局部阻力管段管段摩擦阻力总阻力（m3/hLVa×b直径VPm（ρV2/2）系数Z编号RmPm+Z）(m)(m/s)（mm）（mm）(m/s)（Pa）（Pa）ζ（Pa）Pa/m(Pa)1.413.921-20.1222.04.0250×1501624.071.42.89.941.3513.4233.160.3043.022-30.2449.34.0320×1802134.71.413.0213.250.263.4517.770.11.333

2、-40.7323.54.7500×2503335.81.24.220.181.0521.1927.401.02.0184-51.4648.04.7630×5003904.60.64.812.701.0513.3319.780.131.655-62.9288.05.0630×6306307.320.554.432.141.2540.1847.780.13.216-74.026177.5800×8008006.30.457.6523.810.511.9119.561.413.921-20.1222.04.0

3、250×1201624.071.42.89.941.3513.4233.160.3043.022-30.2446.06.0320×1602134.71.413.0213.250.3043.4513.183-40.732104.7250×5003335.81.21220.181.0521.1938.440.265.231.413.924-70.1224.04.0250×1201624.071.42.89.941.3513.4233.160.3043.029-00.2444.04.0320×1602134.

4、71.413.0213.251.0513.9115.93管路总阻力Σ(Pm+Z备注)(Pa)散流器阀门分叉三通78.33矩形弯头渐缩分流三通渐缩分流三通渐缩88.13分流三通分流三通散流器阀门分叉三通84.78分流三通分流三通矩形弯头散流器阀门88.14分叉三通分流三通10.12.02渐缩管长初选当量实际单位长度动压管段管路风量LL风速管道尺寸摩擦阻力局部阻力管段直径流速摩擦阻力（ρV2/2局部阻力总阻力（m3/h(m)Va×bPm系数总阻力备注编号DVRm）ZΣ(Pm+Z)）(m/s（mm）（Pa）

5、ζPm+Z（mm）(m/s)Pa/m（Pa）（Pa）(Pa))(Pa)9-50.4888.04.0400×3203553.81.310.48.661.0519.49分流三通4-50.9763.05.8500×3203906.10.92.1722.330.819.56分流三通4-71.70813.57.0630×4004896.80.8511.4727.740.2618.6818.68矩形弯头11-120.1224.04.0250×1201624.071.45.69.941.432.94散流器1.35阀门

6、8-110.2442.04.03201602134.71.42.813.251.0516.7189.3分流三通8-110.3664.04.8250×3202804.60.93.612.71.0516.94分流三通11-120.7324.04.7500×2503335.81.24.220.180.512.27渐缩6-121.0982.06.0500×4004445.490.71.418.080.510.44渐缩6-140.1222.04.0250×3201624.071.42.89.942.7533.16

7、散流器阀门72.4114-140.2442.04.0320×1602134.71.42.813.251.0511.85分流三通14-40.7322.04.7500×2503335.81.22.820.181.0527.40分流三通3-150.1222.04.0250×1201624.071.42.89.942.7533.16散流器阀门75.2115-150.2446.04.0320×1602134.71.45.613.251.0511.85分流三通15-50.7322.04.7500×2503335.8

8、1.22.420.181.0525.61分流三通主管5.746.07.01000×808887.170.63.630.841.0535.9835.98分流三通0三层26.764.87.52000×1837897.430.11.4833.121.0535.2535.25分流三通总管002一层管径计算和阻力计算管初选当量实际单位长度动压局部阻力管段管段风量L管道尺寸直径流速摩擦阻力摩擦阻力局部阻力长风速（ρV2/2系数总阻力编号（m3/ha×b