Flow Controller 3
R e v. : F e b u r a r y 9 , 2 0 1 6
30
G e o t h e r m a l H e a t P u m p S y s t e m s
Pressure Drop
Table 6f: 1” Rubber Hose Pressure Drop per 100ft of Hose
No Antifreeze (50°F [10°C] EWT): Water
Flow
Rate
Methanol*
Propylene Glycol*
Ethanol*
Water*
PD (ft)
Vel (ft/s)
Re
PD (ft)
Vel (ft/s)
Re
PD (ft)
Vel (ft/s)
Re
PD (ft)
Vel (ft/s)
Re
1
0.12
0.35
895
0.14
0.35
507
0.13
0.35
807
0.12
0.35
923
2
0.42
0.70
1789
0.48
0.70
1013
0.43
0.70
1614
0.42
0.70
1847
3
0.85
1.06
2709
0.98
1.06
1534
0.88
1.06
2444
0.85
1.06
2796
4
1.41
1.41
3604
1.63
1.41
2041
1.45
1.41
3251
1.40
1.41
3720
5
2.09
1.76
4499
2.41
1.76
2548
2.14
1.76
4058
2.07
1.76
4643
6
2.87
2.11
5393
3.31
2.11
3054
2.95
2.11
4864
2.85
2.11
5567
7
3.76
2.47
6314
4.33
2.47
3575
3.86
2.47
5694
3.73
2.47
6516
8
4.75
2.82
7208
5.47
2.82
4082
4.87
2.82
6501
4.71
2.82
7440
9
5.84
3.17
8103
6.73
3.17
4589
5.99
3.17
7308
5.79
3.17
8363
10
7.02
3.52
8997
8.09
3.52
5095
7.20
3.52
8115
6.96
3.52
9286
11
8.29
3.87
9892
9.56
3.87
5602
8.51
3.87
8922
8.23
3.87
10210
12
9.65
4.23
10812
11.13
4.23
6123
9.91
4.23
9752
9.58
4.23
11160
13
11.11
4.58
11707
12.80
4.58
6630
11.40
4.58
10559
11.02
4.58
12083
14
12.65
4.93
12602
14.58
4.93
7136
12.98
4.93
11366
12.55
4.93
13006
15
14.27
5.28
13496
16.45
5.28
7643
14.64
5.28
12173
14.16
5.28
13930
16
15.97
5.64
14416
18.41
5.64
8164
16.39
5.64
13003
15.85
5.64
14879
17
17.76
5.99
15311
20.48
5.99
8670
18.23
5.99
13810
17.62
5.99
15803
18
19.63
6.34
16206
22.63
6.34
9177
20.15
6.34
14616
19.48
6.34
16726
19
21.58
6.69
17100
24.88
6.69
9684
22.15
6.69
15423
21.41
6.69
17650
20
23.61
7.04
17995
27.22
7.04
10190
24.23
7.04
16230
23.42
7.04
18573
*Notes:
1. Methanol is at 20% by volume; propylene glycol is at 25% by volume; ethanol is at 25% by volume.
2. Percentage by volume, shown above is 15°F [-9.4°C] freeze protection.
3. All fluids with antifreeze are shown at 30°F [-1°C]; water is at 50°F [10°C].
