Research Article

Determination and Application of Comprehensive Specific Frictional Resistance in Heating Engineering

Table 2

Diameter optimization result.

NumberThermal load
(MW)
Design water-supply temperature
(°C)
Design temperature difference
(°C)
Design flow rate
(kg/s)
Economic specific frictional resistance Comprehensive specific frictional resistance
Pipe diameter
(m)
Specific frictional resistance
(Pa/m)
Flow rate
(m/s)
Specific frictional resistance
(Pa/m)
Pipe diameter
(m)
Corrected pipe diameter
(m)
Flow rate
(m/s)

100184.0013060732.590.7511.90650.6660.71.9
101168.6113060671.320.7431.74670.390.62.4
102160.0513060637.240.7381.66680.6240.62.3
103108.2213060430.880.6381.52770.5210.52.2
10445.5013060181.160.4511.441050.3460.351.9
10530.6113060121.870.35451.271220.2870.31.7
10620.741306082.580.3451.171420.2380.251.7
10710.621205050.740.25421.031970.1830.201.6
10815.391306061.280.25611.251610.2060.22.0
1099.181306036.550.2661.161990.1610.152.1
1106.211306024.730.2300.792350.1330.151.4
1118.561306034.080.2581.082060.1550.151.9
11235.7913060142.500.4311.131150.3090.32.0
1138.661306034.480.2591.102060.1560.152.0
1149.051306036.030.2641.152010.1590.152.0
11518.081306071.990.3341.021510.2230.22.3
1169.661306038.460.2731.221970.1640.152.2
1178.421306033.520.2561.072060.1540.151.9
11816.041306063.860.25661.301580.2100.22.0
1197.821306031.140.2480.992150.1480.151.8
1208.221306032.730.2531.042090.1520.151.9
12162.7213060249.720.5321.27940.4020.42.0
12217.951306071.470.3331.011520.2220.22.3
12310.531306041.930.25290.851880.1720.152.4
12434.2413060136.330.35561.421170.3020.31.9
12516.861306067.130.25731.371550.2150.22.1
1268.331306033.170.2551.062090.1530.151.9
1279.051306036.030.2641.152010.1590.152.0
1287.681306030.580.2460.972150.1470.151.7
1297.211306028.710.2410.912210.1430.151.6
1309.871306039.300.25250.801940.1660.152.2
13110.121306040.290.25260.821920.1680.152.3
100′184.0013060732.590.7511.90640.6450.72.37
101′168.6113060671.320.7431.74650.6300.62.25
102′160.0513060637.240.7381.66740.5250.62.19
103′108.2213060430.880.6381.521000.3500.51.88
104′45.5013060181.160.4511.441150.2900.351.72
105′30.6113060121.870.35451.271340.2410.31.68
106′20.741306082.580.3451.171760.1740.252.39
107′10.621306042.280.25290.861510.2090.151.95
108′15.391306061.280.25611.251850.1630.22.07
109′9.181306036.550.2661.162190.1350.151.40
110′6.211306024.730.2300.791920.1570.151.93
111′8.561306034.080.2581.081090.3120.152.02
112′35.7913060142.500.4311.131920.1580.31.95
113′8.661306034.480.2591.101880.1610.152.04
114′9.051306036.030.2641.151410.2260.151.47
115′18.081306071.990.3341.021830.1670.252.18
116′9.661306038.460.2731.221920.1560.151.90
117′8.421306033.520.2561.071480.2130.152.03
118′16.041306063.860.25661.302000.1500.21.76
119′7.821306031.140.2480.991950.1540.151.85
120′8.221306032.730.2531.04890.4070.151.99
121′62.7213060249.720.5321.271420.2250.41.46
122′17.951306071.470.3331.011760.1740.252.37
123′10.531306041.930.25290.851110.3060.151.93
124′34.2413060136.330.35561.421450.2180.32.14
125′16.861306067.130.25731.371950.1550.21.88
126′8.331306033.170.2551.061880.1610.152.04
127′9.051306036.030.2641.152000.1490.151.73
128′7.681306030.580.2460.972060.1450.151.62
129′7.211306028.710.2410.911810.1680.152.22
130′9.871306039.300.25250.801800.1700.152.28
131′10.121306040.290.25511.90640.6450.152.37