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Part III: Source Side Design / Closed Loop Installation Guidelines
Table 3-3e: 1" Rubber Hose Pressure Drop per 100ft of Hose
Methanol*
Flow
Rate
PD (ft)
Vel (ft/s)
1
0.12
0.35
2
0.42
0.70
3
0.85
1.06
4
1.41
1.41
5
2.09
1.76
6
2.87
2.11
7
3.76
2.47
8
4.75
2.82
9
5.84
3.17
10
7.02
3.52
11
8.29
3.87
12
9.65
4.23
13
11.11
4.58
14
12.65
4.93
15
14.27
5.28
16
15.97
5.64
17
17.76
5.99
18
19.63
6.34
19
21.58
6.69
20
23.61
7.04
*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 fl uids with antifreeze are shown at 30°F [-1°C]; water is at 50°F [10°C].
Bryant Geothermal Heat Pump Systems
Propylene Glycol*
Re
PD (ft)
Vel (ft/s)
895
0.14
0.35
1789
0.48
0.70
2709
0.98
1.06
3604
1.63
1.41
4499
2.41
1.76
5393
3.31
2.11
6314
4.33
2.47
7208
5.47
2.82
8103
6.73
3.17
8997
8.09
3.52
9892
9.56
3.87
10812
11.13
4.23
11707
12.80
4.58
12602
14.58
4.93
13496
16.45
5.28
14416
18.41
5.64
15311
20.48
5.99
16206
22.63
6.34
17100
24.88
6.69
17995
27.22
7.04
Water-to-Water System Design Guide
Ethanol*
Re
PD (ft)
Vel (ft/s)
507
0.13
0.35
1013
0.43
0.70
1534
0.88
1.06
2041
1.45
1.41
2548
2.14
1.76
3054
2.95
2.11
3575
3.86
2.47
4082
4.87
2.82
4589
5.99
3.17
5095
7.20
3.52
5602
8.51
3.87
6123
9.91
4.23
6630
11.40
4.58
7136
12.98
4.93
7643
14.64
5.28
8164
16.39
5.64
8670
18.23
5.99
9177
20.15
6.34
9684
22.15
6.69
10190
24.23
7.04
Water*
Re
PD (ft)
Vel (ft/s)
807
0.12
0.35
1614
0.42
0.70
2444
0.85
1.06
3251
1.40
1.41
4058
2.07
1.76
4864
2.85
2.11
5694
3.73
2.47
6501
4.71
2.82
7308
5.79
3.17
8115
6.96
3.52
8922
8.23
3.87
9752
9.58
4.23
10559
11.02
4.58
11366
12.55
4.93
12173
14.16
5.28
13003
15.85
5.64
13810
17.62
5.99
14616
19.48
6.34
15423
21.41
6.69
16230
23.42
7.04
Re
923
1847
2796
3720
4643
5567
6516
7440
8363
9286
10210
11160
12083
13006
13930
14879
15803
16726
17650
18573
51
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