空調(diào)水管、流量、流速、管徑自動計算以及推薦表和水管各種參數(shù)對照表

1、管管徑徑/流流速速/流流量量對對照照表表管管徑徑(DN)流流量量 m m3 3/h/h0.4m/s0.6m/s0.8m/s1.0m/s1.2m/s1.4m/s1.6m/s1.8m/s2.0m/s2.2m/s2.4m/s200.50.70.91.11.41.61.82.02.32.52.7250.71.11.41.82.12.52.83.23.53.94.2321.21.72.32.93.54.14.65.25.86.46.9401.82.73.64.55.46.37.28.19.010.010.9502.84.25.77.18.59.911.312.714.115.617.0654.87.29

2、.611.914.316.719.121.523.926.328.7807.210.914.518.121.725.329.032.636.239.843.410011.317.022.628.333.939.645.250.956.562.267.912517.726.535.344.253.061.970.779.588.497.2106.015025.438.250.963.676.389.1101.8114.5127.2140.0152.720045.267.990.5113.1135.7158.3181.0203.6226.2248.8271.425070.7106.0141.417

3、6.7212.1247.4282.7318.1353.4388.8424.1300101.8152.7203.6254.5305.4356.3407.1458.0508.9559.8610.7350138.5207.8277.1346.4415.6484.9554.2623.4692.7762.0831.3400181.0271.4361.9452.4542.9633.3723.8814.3904.8995.31085.7450229.0343.5458.0572.6687.1801.6916.11030.61145.11259.61374.1500282.7424.1565.5706.984

4、8.2989.61131.01272.31413.71555.11696.5600407.1610.7814.31017.91221.41425.01628.61832.22035.72239.32442.9700554.176 831.264 1108.35 1385.44 1662.53 1939.62 2216.71 2493.79 2770.88 3047.97 3325.06800723.822 1085.73 1447.64 1809.56 2171.47 2533.38 2895.293257.23619.11 3981.02 4342.93900916.087 1374.13

5、1832.17 2290.22 2748.26 3206.31 3664.35 4122.39 4580.44 5038.48 5496.5210001130.97 1696.46 2261.94 2827.43 3392.923958.44523.89 5089.37 5654.86 6220.35 6785.8312001628.62442.93257.24071.54885.85700.16514.47328.781438957.39771.6管徑(DN)流流速速推推薦薦值值m/s:20253240506580100125150200閉式系統(tǒng) 0.5-0.6 0.6-0.7 0.7-0.

6、90.8-10.9-1.2 1.1-1.4 1.2-1.6 1.3-1.8 1.5-2.0 1.6-2.2 1.8-2.5開式系統(tǒng) 0.4-0.5 0.5-0.6 0.6-0.8 0.7-0.9 0.8-1.0 0.9-1.2 1.1-1.4 1.2-1.6 1.4-1.8 1.5-2.0 1.6-2.3鍍鋅鋼管外徑內(nèi)徑DN1521.7516.25DN2026.7521.25DN2533.527DN3242.2535.75DN404841DN506053DN6575.568DN8088.580.5DN100114106DN125140131DN150165156DN200219203DN250

7、2732572.6m/s2.8m/s3.0m/s內(nèi)內(nèi)面面積積m m2 22.93.23.40.0003144.64.95.30.0004917.58.18.70.00080411.812.713.60.00125718.419.821.20.00196331.133.435.80.00331847.050.754.30.00502773.579.284.80.007854114.9123.7132.50.012272165.4178.1190.90.017671294.1316.7339.30.031416459.5494.8530.10.049087661.6712.5763.40.0706

8、86900.5969.81039.10.0962111176.21266.71357.20.1256641488.61603.21717.70.1590431837.81979.22120.60.1963492646.52850.03053.60.2827433602.15 3879.23 4156.320.384844644704.84 5066.75 5428.670.502654225954.57 6412.61 6870.650.636171757351.327916.88482.290.7853972210585.9 11400.2 12214.51.1309722503003504

9、001.8-2.6 1.9-2.9 1.6-2.51.8-2.61.7-2.4 1.7-2.4 1.6-2.11.8-2.3管管徑徑/流流速速/流流量量對對照照表表流流量量 m m3 3/h/h流流速速推推薦薦值值m/s:知道管徑、流速求流量知道流量、流速求管徑知道流量、管徑求流速管徑（DN）mm53流量（Q）m3/h125流量（Q）m3/h11.18流速（V）m/s1.2流速（V）m/s1.5管徑（DN）mm53流量（Q）m3/h9.5307管徑（DN）mm171.6773流速（V）m/s1.4077注：上述管徑輸入內(nèi)徑值水水流流量量計計算算輸入（黃）or結果（綠）備注冷負荷KW450進出水

10、溫差5輸入值4.55所需冷凍水流量m3/h77.38607051冷凍水泵流量m3/h88.99398108冷卻水流量系數(shù)1.251.251.35所需冷卻水流量m3/h96.73258813冷卻水泵流量m3/h111.2424764冷卻塔水流量系數(shù)1.51.351.5冷卻塔水流量m3/h116.0791058多臺水泵并聯(lián)時，水流量會產(chǎn)生衰減水泵 流量流量的 與單臺泵運行比較 臺數(shù)增加值流量的減少1100/2190905%32516116%42843329%53001640%冷凍水流量L(m3/h)=Q(kW)（4.55）x1.163水流量估算公式冷卻水流量L(m3/h)=（1.251.35）Q(

11、kW)（4.55）x1.163水流量估算公式（順便重點強調(diào)一下）同理：將以上公式溫差取5度，由于能效比不小于4，系數(shù)可取1.25，簡化后，冷卻水流量為機組冷凍凍水流量的約1.25倍，即L(m3/h)=1.25*0.172Q0.215Q冷卻水泵水流量，可按冷凍水流量預留 15的余量，則冷卻水泵流量L (m3/h)0.215Q*1.150.247Q特別提示：冷卻水流量中的Q只能取螺桿機主機制冷量。冷卻塔流量水流量估算公式（順便重點強調(diào)一下）式中Q選設計冷負荷，不宜選末端冷量之和，嚴禁選主機制冷量， 4.55指機組進出水溫度差，標準情況況下溫差為5；1.163為大卡與瓦之間的換算系數(shù)；簡化后：冷凍水

12、流量L (m3/h)0.172Q（該公式適用于管徑計算的流量）冷凍水泵水流量，可按冷凍水流量預留 15的余量，則冷凍水泵流量L (m3/h)0.172Q*1.150.198Q冷凍水流量L(m3/h)=Q(kW)（4.55）x1.163閉式冷凍水泵揚程Hmax=P1+P2+0.05L（1+K）制冷主機水壓降末端水壓降最不利環(huán)路的總水管長度局部阻力當量長度總和與直管總長的比值最不利環(huán)路較長時K取0.20.3；較斷時K取0.40.6水泵揚程計算L(m3/h)=（1.351.5）Q(kW)（4.55）x1.163同理：將以上公式溫差取5度，由于冷卻塔隨著適用時間的增加，換熱效率降低，且冷卻塔使用環(huán)境與

13、設計標況有差別別，故冷卻塔水流量的系數(shù)建議取最大 1.5，冷卻塔的水流量為機組冷凍水流量的 1.5倍，經(jīng)簡化后L(m3/h)=1.5*0.172Q0.258Q特別提示：冷卻水流量中的Q只能取螺桿機主機制冷量。冷卻塔流量一般空調(diào)冷凍水泵的揚程基本在27m32m之間。當系統(tǒng)比較簡單時，可用24m揚程的，當系統(tǒng)比較復雜，最不利環(huán)路管路較長時，可用37m揚程的。開式冷卻水泵揚程Hmax=P1+Z+5+0.05L制冷主機水壓降冷卻塔開式段高度最不利環(huán)路的總水管長度管路中管件局部損失可取5mH2一般空調(diào)冷卻水泵的揚程基本在16m24m之間。當系統(tǒng)比較簡單時，水塔離機組較近時，可用12m揚程的。水泵揚程計算

14、膨脹水箱選型局部阻力當量長度總和與直管總長的比值最不利環(huán)路較長時K取0.20.3；較斷時K取0.40.6膨脹水箱有效容積VC=0.0006（t2-t1）V0 （L）水最高工作溫水最低工作溫水膨脹系數(shù)系統(tǒng)儲水量VC=0.5Q （L）冷量（KW）簡易公式：Q等同于冷凍水流量中的Q膨脹水箱選型一般空調(diào)冷卻水泵的揚程基本在16m24m之間。當系統(tǒng)比較簡單時，水塔離機組較近時，可用12m揚程的。各各種種管管道道的的壁壁厚厚及及內(nèi)內(nèi)外外徑徑序序號號管管道道名名稱稱規(guī)規(guī)格格型型號號外外徑徑內(nèi)內(nèi)徑徑壁壁厚厚備備注注1 1PVCPVC電電工工套套管管DN16DN1616.0016.0013.2013.201.4

15、01.40國國標標DN20DN2020.0020.0017.0017.001.501.50國國標標DN25DN2525.0025.0021.6021.601.701.70國國標標DN32DN3232.0032.0028.0028.002.002.00國國標標2 2PVCPVC給給水水管管1.25MPa1.25MPaDN20DN2020.0020.0016.0016.002.002.00國國標標DN25DN2525.0025.0021.0021.002.002.00國國標標DN32DN3232.0032.0028.0028.002.002.00國國標標DN40DN4040.0040.0035.2

16、035.202.402.40國國標標DN50DN5050.0050.0044.0044.003.003.00國國標標DN63DN6363.0063.0055.4055.403.803.80國國標標DN75DN7575.0075.0066.0066.004.504.50國國標標DN90DN9090.0090.0079.2079.205.405.40國國標標DN110DN110110.00110.0098.6098.605.705.70國國標標3 3PPRPPR冷冷給給水水管管1.25MPa1.25MPaDN20DN2020.0020.0016.0016.002.002.00國國標標DN25DN2

17、525.0025.0020.4020.402.302.30國國標標DN32DN3232.0032.0026.0026.003.003.00國國標標DN40DN4040.0040.0032.6032.603.703.70國國標標DN50DN5050.0050.0040.8040.804.604.60國國標標DN63DN6363.0063.0051.4051.405.805.80國國標標DN75DN7575.0075.0061.2061.206.906.90國國標標DN90DN9090.0090.0073.6073.608.208.20國國標標DN110DN110110.00110.0090.00

18、90.0010.0010.00國國標標4 4PPRPPR冷冷熱熱給給水水管管1.6MPa1.6MPaDN20DN2020.0020.0015.4015.402.302.30國國標標DN25DN2525.0025.0019.4019.402.802.80國國標標DN32DN3232.0032.0024.8024.803.603.60國國標標DN40DN4040.0040.0031.0031.004.504.50國國標標DN50DN5050.0050.0038.8038.805.605.60國國標標DN63DN6363.0063.0048.8048.807.107.10國國標標DN75DN7575

19、.0075.0058.2058.208.408.40國國標標DN90DN9090.0090.0069.8069.8010.1010.10國國標標DN110DN110110.00110.0085.4085.4012.3012.30國國標標5 5PPRPPR熱熱水水給給水水管管2.0MPa2.0MPaDN20DN2020.0020.0014.4014.402.802.80國國標標DN25DN2525.0025.0018.0018.003.503.50國國標標DN32DN3232.0032.0023.2023.204.404.40國國標標DN40DN4040.0040.0029.0029.005.5

20、05.50國國標標DN50DN5050.0050.0036.2036.206.906.90國國標標DN63DN6363.0063.0046.4046.408.308.30國國標標DN75DN7575.0075.0054.4054.4010.3010.30國國標標DN90DN9090.0090.0065.4065.4012.3012.30國國標標DN110DN110110.00110.0079.8079.8015.1015.10國國標標6 6UPVCUPVC塑塑料料排排水水管管DN50DN5050.0050.0046.0046.002.002.00國國標標DN75DN7575.0075.0070

21、.4070.402.302.30國國標標DN110DN110110.00110.00103.60103.603.203.20國國標標DN160DN160160.00160.00152.00152.004.004.00國國標標序序號號管管道道名名稱稱規(guī)規(guī)格格型型號號外外徑徑內(nèi)內(nèi)徑徑壁壁厚厚備備注注7 7鍍鍍鋅鋅鋼鋼管管DN15DN1521.3021.3015.8015.802.752.75國國標標DN20DN2026.5026.5021.0021.002.752.75國國標標DN25DN2533.5033.5027.0027.003.253.25國國標標DN32DN3242.3042.3035.

22、8035.803.253.25國國標標DN40DN4048.0048.0041.0041.003.503.50國國標標DN50DN5060.0060.0053.0053.003.503.50國國標標DN65DN6575.5075.5068.0068.003.753.75國國標標DN80DN8088.5088.5080.5080.504.004.00國國標標DN100DN100114.00114.00106.00106.004.004.00國國標標DN125DN125137.00137.00128.00128.004.504.50國國標標DN150DN150168.00168.00159.001

23、59.004.504.50國國標標管管徑徑/ /流流速速/ /流流量量對對照照表表 1 1管管徑徑單單位位：DNDN 流流速速單單位位：m/sm/s 流流量量單單位位：m m3 3/h/h 圓圓周周率率（）：3.14159263.1415926管徑管管 道道 管管 徑徑 規(guī)規(guī) 格格 大大 小?。―NDN） 流量20253240506580100125150200流速0.10.110.180.290.450.711.191.812.834.426.3611.310.20.230.350.580.901.412.393.625.658.8412.7222.620.30.340.530.871.36

24、2.123.585.438.4813.2519.0933.930.40.450.711.161.812.834.787.2411.3117.6725.4545.240.50.570.881.452.263.535.979.0514.1422.0931.8156.550.60.681.061.742.714.247.1710.8616.9626.5138.1767.860.70.791.242.033.174.958.3612.6719.7930.9344.5379.170.80.901.412.323.625.659.5614.4822.6235.3450.8990.480.91.021.59

25、2.614.076.3610.7516.2925.4539.7657.26101.7911.131.772.904.527.0711.9518.1028.2744.1863.62113.101.11.241.943.184.987.7813.1419.9131.1048.6069.98124.411.21.362.123.475.438.4814.3421.7133.9353.0176.34135.721.31.472.303.765.889.1915.5323.5236.7657.4382.70147.031.41.582.474.056.339.9016.7225.3339.5861.85

26、89.06158.341.51.702.654.346.7910.6017.9227.1442.4166.2795.43169.651.61.812.834.637.2411.3119.1128.9545.2470.69101.79180.961.71.923.004.927.6912.0220.3130.7648.0775.10108.15192.271.82.043.185.218.1412.7221.5032.5750.8979.52114.51203.581.92.153.365.508.6013.4322.7034.3853.7283.94120.87214.8822.263.535

27、.799.0514.1423.8936.1956.5588.36127.23226.192.12.383.716.089.5014.8425.0938.0059.3892.78133.60237.502.22.493.896.379.9515.5526.2839.8162.2097.19139.96248.812.32.604.066.6610.4016.2627.4841.6265.03101.61146.32260.122.42.714.246.9510.8616.9628.6743.4367.86106.03152.68271.43管管徑徑/ /流流速速/ /流流量量對對照照表表 2 2

28、管管徑徑單單位位：DNDN 流流速速單單位位：m/sm/s 流流量量單單位位：m m3 3/h/h 圓圓周周率率（）：3.14159263.1415926管徑管管 道道 管管 徑徑 規(guī)規(guī) 格格 大大 小?。―NDN） 流量20253240506580100125150200流速2.52.834.427.2411.3117.6729.8645.2470.69110.45159.04282.742.62.944.597.5311.7618.3831.0647.0573.51114.86165.40294.052.73.054.777.8212.2119.0932.2548.8676.34119.2

29、8171.77305.362.83.174.958.1112.6719.7933.4550.6779.17123.70178.13316.672.93.285.128.4013.1220.5034.6452.4882.00128.12184.49327.9833.395.308.6913.5721.2135.8454.2984.82132.54190.85339.293.13.515.488.9814.0221.9137.0356.1087.65136.95197.21350.603.23.625.659.2614.4822.6238.2357.9190.48141.37203.58361.9

30、13.33.735.839.5514.9323.3339.4259.7293.31145.79209.94373.223.43.856.019.8415.3824.0340.6261.5296.13150.21216.30384.533.53.966.1910.1315.8324.7441.8163.3398.96154.63222.66395.843.64.076.3610.4216.2925.4543.0165.14101.79159.04229.02407.153.74.186.5410.7116.7426.1544.2066.95104.62163.46235.38418.463.84

31、.306.7211.0017.1926.8645.3968.76107.44167.88241.75429.773.94.416.8911.2917.6427.5746.5970.57110.27172.30248.11441.0844.527.0711.5818.1028.2747.7872.38113.10176.71254.47452.394.14.647.2511.8718.5528.9848.9874.19115.92181.13260.83463.704.24.757.4212.1619.0029.6950.1776.00118.75185.55267.19475.014.34.8

32、67.6012.4519.4530.3951.3777.81121.58189.97273.55486.324.44.987.7812.7419.9131.1052.5679.62124.41194.39279.92497.634.55.097.9513.0320.3631.8153.7681.43127.23198.80286.28508.944.65.208.1313.3220.8132.5254.9583.24130.06203.22292.64520.254.75.328.3113.6121.2633.2256.1585.05132.89207.64299.00531.564.85.4

33、38.4813.9021.7133.9357.3486.86135.72212.06305.36542.87管管徑徑/ /流流速速/ /流流量量對對照照表表 3 3管管徑徑單單位位：DNDN 流流速速單單位位：m/sm/s 流流量量單單位位：m m3 3/h/h 圓圓周周率率（）：3.14159263.1415926管徑管管 道道 管管 徑徑 規(guī)規(guī) 格格 大大 小?。―NDN） 流量20253240506580100125150200流速4.95.548.6614.1922.1734.6458.5388.67138.54216.48311.72554.1855.658.8414.4822.62

34、35.3459.7390.48141.37220.89318.09565.495.15.779.0114.7723.0736.0560.9292.29144.20225.31324.45576.805.25.889.1915.0623.5236.7662.1294.10147.03229.73330.81588.115.35.999.3715.3523.9837.4663.3195.91149.85234.15337.17599.425.46.119.5415.6324.4338.1764.5197.72152.68238.56343.53610.735.56.229.7215.9224.88

35、38.8865.7099.53155.51242.98349.89622.045.66.339.9016.2125.3339.5866.90101.34158.34247.40356.26633.355.76.4510.0716.5025.7940.2968.09103.14161.16251.82362.62644.655.86.5610.2516.7926.2441.0069.29104.95163.99256.24368.98655.965.96.6710.4317.0826.6941.7070.48106.76166.82260.65375.34667.2766.7910.6017.3

36、727.1442.4171.68108.57169.65265.07381.70678.586.16.9010.7817.6627.6043.1272.87110.38172.47269.49388.07689.896.27.0110.9617.9528.0543.8374.06112.19175.30273.91394.43701.206.37.1311.1318.2428.5044.5375.26114.00178.13278.33400.79712.516.47.2411.3118.5328.9545.2476.45115.81180.96282.74407.15723.826.57.3

37、511.4918.8229.4145.9577.65117.62183.78287.16413.51735.136.67.4611.6619.1129.8646.6578.84119.43186.61291.58419.87746.446.77.5811.8419.4030.3147.3680.04121.24189.44296.00426.24757.756.87.6912.0219.6930.7648.0781.23123.05192.27300.41432.60769.066.97.8012.1919.9831.2148.7782.43124.86195.09304.83438.9678

38、0.3777.9212.3720.2731.6749.4883.62126.67197.92309.25445.32791.687.18.0312.5520.5632.1250.1984.82128.48200.75313.67451.68802.997.28.1412.7220.8532.5750.8986.01130.29203.58318.09458.04814.30管管徑徑/ /流流速速/ /流流量量對對照照表表 4 4管管徑徑單單位位：DNDN 流流速速單單位位：m/sm/s 流流量量單單位位：m m3 3/h/h 圓圓周周率率（）：3.14159263.1415926管徑管管 道道

39、 管管 徑徑 規(guī)規(guī) 格格 大大 小?。―NDN） 流量20253240506580100125150200流速7.38.2612.9021.1433.0251.6087.21132.10206.40322.50464.41825.617.48.3713.0821.4333.4852.3188.40133.91209.23326.92470.77836.927.58.4813.2521.7133.9353.0189.59135.72212.06331.34477.13848.237.68.6013.4322.0034.3853.7290.79137.53214.88335.76483.49859

40、.547.78.7113.6122.2934.8354.4391.98139.34217.71340.18489.85870.857.88.8213.7822.5835.2955.1393.18141.15220.54344.59496.21882.167.98.9313.9622.8735.7455.8494.37142.96223.37349.01502.58893.4789.0514.1423.1636.1956.5595.57144.76226.19353.43508.94904.788.19.1614.3123.4536.6457.2696.76146.57229.02357.855

41、15.30916.098.29.2714.4923.7437.1057.9697.96148.38231.85362.26521.66927.408.39.3914.6724.0337.5558.6799.15150.19234.68366.68528.02938.718.49.5014.8424.3238.0059.38100.35152.00237.50371.10534.38950.028.59.6115.0224.6138.4560.08101.54153.81240.33375.52540.75961.338.69.7315.2024.9038.9160.79102.73155.62

42、243.16379.94547.11972.648.79.8415.3725.1939.3661.50103.93157.43245.99384.35553.47983.958.89.9515.5525.4839.8162.20105.12159.24248.81388.77559.83995.268.910.0715.7325.7740.2662.91106.32161.05251.64393.19566.191006.57910.1815.9026.0640.7263.62107.51162.86254.47397.61572.561017.889.110.2916.0826.3541.1

43、764.32108.71164.67257.30402.03578.921029.199.210.4016.2626.6441.6265.03109.90166.48260.12406.44585.281040.509.310.5216.4326.9342.0765.74111.10168.29262.95410.86591.641051.819.410.6316.6127.2242.5266.44112.29170.10265.78415.28598.001063.119.510.7416.7927.5142.9867.15113.49171.91268.61419.70604.361074

44、.429.610.8616.9627.7943.4367.86114.68173.72271.43424.12610.731085.739.710.9717.1428.0843.8868.57115.88175.53274.26428.53617.091097.049.811.0817.3228.3744.3369.27117.07177.34277.09432.95623.451108.359.911.2017.4928.6644.7969.98118.26179.15279.92437.37629.811119.661011.3117.6728.9545.2470.69119.46180.

45、96282.74441.79636.171130.97管管徑徑流流速速推推薦薦安安全全值值管徑(DN)流流速速推推薦薦值值m/s:20253240506580100125150閉式系統(tǒng) 0.5-0.6 0.6-0.7 0.7-0.90.8-10.9-1.2 1.1-1.4 1.2-1.6 1.3-1.8 1.5-2.01.6-2.2開式系統(tǒng) 0.4-0.5 0.5-0.6 0.6-0.8 0.7-0.9 0.8-1.0 0.9-1.2 1.1-1.4 1.2-1.6 1.4-1.81.5-2.025030035040045050060017.6725.4534.6445.2457.2670.6

46、9101.7935.3450.8969.2790.48114.51141.37203.5853.0176.34103.91135.72171.77212.06305.3670.69101.79138.54180.96229.02282.74407.1588.36127.23173.18226.19286.28353.43508.94106.03152.68207.82271.43343.53424.12610.73123.70178.13242.45316.67400.79494.80712.51141.37203.58277.09361.91458.04565.49814.30159.042

47、29.02311.72407.15515.30636.17916.09176.71254.47346.36452.39572.56706.861017.88194.39279.92381.00497.63629.81777.541119.66212.06305.36415.63542.87687.07848.231221.45229.73330.81450.27588.11744.32918.921323.24247.40356.26484.90633.35801.58989.601425.03265.07381.70519.54678.58858.831060.291526.81282.74

48、407.15554.18723.82916.091130.971628.60300.41432.60588.81769.06973.341201.661730.39318.09458.04623.45814.301030.601272.351832.18335.76483.49658.09859.541087.851343.031933.96353.43508.94692.72904.781145.111413.722035.75371.10534.38727.36950.021202.371484.402137.54388.77559.83761.99995.261259.621555.09

49、2239.33406.44585.28796.631040.501316.881625.772341.11424.12610.73831.271085.731374.131696.462442.90250300350400450500600441.79636.17865.901130.971431.391767.152544.69管管徑徑/ /流流速速/ /流流量量對對照照表表 1 1管管徑徑單單位位：DNDN 流流速速單單位位：m/sm/s 流流量量單單位位：m m3 3/h/h 圓圓周周率率（）：3.14159263.1415926管管 道道 管管 徑徑 規(guī)規(guī) 格格 大大 小小（DNDN）

50、管管徑徑/ /流流速速/ /流流量量對對照照表表 2 2管管徑徑單單位位：DNDN 流流速速單單位位：m/sm/s 流流量量單單位位：m m3 3/h/h 圓圓周周率率（）：3.14159263.1415926管管 道道 管管 徑徑 規(guī)規(guī) 格格 大大 小小（DNDN）459.46661.62900.541176.211488.641837.832646.48477.13687.07935.171221.451545.901908.522748.27494.80712.51969.811266.691603.151979.202850.05512.47737.961004.451311.9316

51、60.412049.892951.84530.14763.411039.081357.171717.672120.583053.63547.82788.851073.721402.411774.922191.263155.42565.49814.301108.351447.651832.182261.953257.20583.16839.751142.991492.881889.432332.633358.99600.83865.191177.631538.121946.692403.323460.78618.50890.641212.261583.362003.942474.003562.5

52、7636.17916.091246.901628.602061.202544.693664.35653.84941.541281.531673.842118.452615.383766.14671.52966.981316.171719.082175.712686.063867.93689.19992.431350.811764.322232.972756.753969.72706.861017.881385.441809.562290.222827.434071.50724.531043.321420.081854.802347.482898.124173.29742.201068.7714

53、54.711900.042404.732968.814275.08759.871094.221489.351945.272461.993039.494376.87777.541119.661523.991990.512519.243110.184478.65795.221145.111558.622035.752576.503180.864580.44812.891170.561593.262080.992633.753251.554682.23830.561196.001627.892126.232691.013322.234784.02848.231221.451662.532171.47

54、2748.273392.924885.80250300350400450500600865.901246.901697.172216.712805.523463.614987.59883.571272.351731.802261.952862.783534.295089.38901.241297.791766.442307.192920.033604.985191.17918.921323.241801.082352.422977.293675.665292.96936.591348.691835.712397.663034.543746.355394.74954.261374.131870.

55、352442.903091.803817.045496.53971.931399.581904.982488.143149.053887.725598.32管管徑徑/ /流流速速/ /流流量量對對照照表表 3 3管管徑徑單單位位：DNDN 流流速速單單位位：m/sm/s 流流量量單單位位：m m3 3/h/h 圓圓周周率率（）：3.14159263.1415926管管 道道 管管 徑徑 規(guī)規(guī) 格格 大大 小?。―NDN）989.601425.031939.622533.383206.313958.415700.111007.271450.471974.262578.623263.564029.

56、095801.891024.941475.922008.892623.863320.824099.785903.681042.621501.372043.532669.103378.084170.466005.471060.291526.812078.162714.343435.334241.156107.261077.961552.262112.802759.573492.594311.846209.041095.631577.712147.442804.813549.844382.526310.831113.301603.152182.072850.053607.104453.216412.621130.971628.602216.712895.293664.354523.896514.411148.641654.052251.342940.533721.614594.586616.191166.321679.502285.982985.773778.864665.276717.981183.991704.942320.623031.013836.124735.956819.771