按理论计算管径/mm 最大流速/（m/s）摩擦阻力/（m3/h）流量/（m3/h）△t=4℃时负荷/kw△t=5℃时负荷/kw水容量/（kg/m）对应管径对应平均负荷制冷量KW管径/mmDN150.53900.35 1.63 2.04 0.196 1.8415DN200.63700.77 3.58 4.48 0.356 4.0320DN250.73601.44 6.78.37 0.572 7.5425DN320.72492.53 11.7714.711.00713.24 32DN400.93604.28 19.9124.891.32 22.40 40DN5012907.94 36.9446.171.96441.56 50DN701.126014.3866.9 83.623.42175.26 65DN801.329023.82110.81138.45.153124.6180DN1001.50100DN1251.80125DN1502020253240506580100闭式系统0.5-0.60.6-0.70.7-0.90.8-10.9-1.21.1-1.41.2-1.61.3-1.8开式系统0.4-0.50.5-0.60.6-0.80.7-0.90.8-1.00.9-1.21.1-1.41.2-1.6空调水系统常规工艺镀锌钢管管径流量流速冷量对比表管径(DN)流速推荐值m/s:125150200250300350400闭式系统1.5-2.01.6-2.21.8-2.51.8-2.61.9-2.91.6-2.51.8-2.6开式系统1.4-1.81.5-2.0 1.7-2.41.7-2.41.6-2.11.8-2.3管径(DN) 流量 m3/h0.4m/s0.6m/s0.8m/s1.0m/s1.2m/s1.4m/s1.6m/s1.8m/s200.50.70.91.11.41.61.82.0250.71.11.41.82.12.52.83.2321.21.72.32.93.54.14.65.2401.82.73.64.55.46.37.28.1502.84.25.77.18.59.911.312.7654.87.29.611.9 14.3 16.719.121.5807.210.9 14.5 18.1 21.7 25.329.032.610011.3 17.0 22.6 28.3 33.9 39.645.250.912517.7 26.5 35.3 44.2 53.0 61.970.779.515025.4 38.2 50.9 63.6 76.3 89.1 101.8114.520045.2 67.9 90.5 113.1135.7158.3181.0203.625070.7 106.0141.4176.7212.1247.4282.7318.1300101.8152.7203.6254.5305.4356.3407.1458.0350138.5207.8277.1346.4415.6484.9554.2623.4400181.0271.4361.9452.4542.9633.3723.8814.3450229.0343.5458.0572.6687.1801.6916.11030.6500282.7424.1565.5706.9848.2989.61131.01272.3600407.1610.7814.31017.91221.41425.01628.61832.2管径(DN)流速推荐值m/s:管径/流速/流量对照表2.0m/s2.2m/s2.4m/s2.6m/s2.8m/s3.0m/s202.32.52.72.93.23.4253.53.94.24.64.95.3325.86.46.97.58.18.7409.010.0 10.9 11.8 12.7 13.65014.1 15.6 17.0 18.4 19.8 21.26523.9 26.3 28.7 31.1 33.4 35.88036.2 39.8 43.4 47.0 50.7 54.310056.5 62.2 67.9 73.5 79.2 84.812588.4 97.2 106.0114.9123.7132.5150127.2140.0152.7165.4178.1190.9200226.2248.8271.4294.1316.7339.3250353.4388.8424.1459.5494.8530.1300508.9559.8610.7661.6712.5763.4350692.7762.0831.3900.5969.81039.1400904.8995.31085.71176.21266.71357.2450 1145.11259.61374.11488.61603.21717.7500 1413.71555.11696.51837.81979.22120.6600 2035.72239.32442.92646.52850.03053.6管径(D N )流量 m3/h管径/流速/流量对照表3.36.09.616.822.136.960.885.2
