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Pressure Drop Calculation - waterfurnace.com · Pressure Drop Calculation Please fill out the...

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Troubleshoot the following problem by using the information provided. The first 20 service technicians to fax the correct answer back to us will win $50. * Fax answers to: Jeff Cross @ (800) 783-5667 * This contest is part of the WaterFurnace E-News sent on Friday. Answers to this problem must be received by 5pm the following Tuesday to qualify. Troubleshooting Contest WFTC023 Technician: Address: Dealer: Phone: Your Information: Pressure Drop Calculation Please fill out the attached worksheet complete with pump curve plotted. Unit is a NDV064A111CTL with five vertical bores totalling 1500 feet of 0.75˝ pipe. Unit: NDV064A111CTL Antifreeze: Methanol (20%) Hose kit: Standard CK4L, 10 feet of Rubber hose. Inside Piping: 1.25˝ - 20 feet total. Outside Piping: 1.25˝ - 70 feet total. Circuit Piping: 0.75˝ Total Fittings: 6
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Page 1: Pressure Drop Calculation - waterfurnace.com · Pressure Drop Calculation Please fill out the attached worksheet complete with pump curve plotted. Unit is a NDV064A111CTL

Troubleshoot the following problem by using the information provided. The first 20 service technicians to fax the correct answer back to us will win $50.

* Fax answers to: Jeff Cross @ (800) 783-5667

* This contest is part of the WaterFurnace E-News sent on Friday. Answers to this problem must be received by 5pm the following Tuesday to qualify.

Troubleshooting Contest

WFTC023

Technician:

Address:

Dealer:

Phone:

Your Information:

Pressure Drop Calculation

Please fill out the attached worksheet complete with pump curve plotted. Unit is a NDV064A111CTL

with five vertical bores totalling 1500 feet of 0.75˝ pipe.

Unit: NDV064A111CTL

Antifreeze: Methanol (20%)

Hose kit: Standard CK4L, 10 feet of Rubber hose.

Inside Piping: 1.25˝ - 20 feet total.

Outside Piping: 1.25˝ - 70 feet total.

Circuit Piping: 0.75˝

Total Fittings: 6

Page 2: Pressure Drop Calculation - waterfurnace.com · Pressure Drop Calculation Please fill out the attached worksheet complete with pump curve plotted. Unit is a NDV064A111CTL

Inside Supply3

Pipe Size

a. WF Unit #1 __________@ ___ gpm _________ft. of hd. x_________temp. corr. factor =___________ft. of hd.

b. Hose Kit ____________@ ___gpm _________ft. x ______________ft. of hd./100 ft. =____________ft. of hd.

c. Inside Piping _________@ ___gpm _________ft. x ______________ft. of hd./100 ft. =____________ft. of hd.(Flow Center to Unit) Pipe Size

TOTAL Unit #1

a. WF Unit #2 __________@ ___ gpm _________ft. of hd. x_________temp. corr. factor =___________ft. of hd.

b. Hose Kit ____________@ ___gpm _________ft. x ______________ft. of hd./100 ft. =____________ft. of hd.

c. Inside Piping _________@ ___gpm _________ft. x ______________ft. of hd./100 ft. =____________ft. of hd.(Flow Center to Unit) Pipe Size

TOTAL Unit #2 ____________ft. of hd.

____________ft. of hd.Unit TOTAL (Largest of Total Unit #1 and Unit #2)

1

2

Job/Client Name __________________________________ GSC Technician __________________________________

Loop Description __________________________________________________________________________________

Total Trench/Bore ____________________________________________________ Number of Circuits ____________

Antifreeze __________________________________________________________ Minimum Loop Temperature _____

Residential Pressure Drop Calculation Worksheet

The purpose of the following formulasis to generate 3 points on the systemperformance curve.

Point 1Total gpm = 3 gpm per ton = _______Total pd = pd of the system = _______

Point 2Total gpm 2 = .667 x gpm = _______Total pd 2 = .5 x pd = _______

Point 3 Total gpm 3 = 1.33 x gpm = _______Total pd 3 = 2 x pd = _______

Point 1 is generated from the designflow need and the pressure drop (pd)associated with this particular pipingsystem. Points 2 and 3 are generatedfrom point 1.

TOTAL SYSTEM PRESSURE DROP Total gpm= ______________ Total pressure drop= _________ft. of hd.

Fittings (Add 2 ft. of hd. for every 10 fittings) ___________ft. of hd.6

Circuit Piping __________@ ____gpm _________ft. x ___________ft. of hd./100 ft. =______________ft. of hd.Pipe Size

5

Outside Supply& Return Piping _________@ ____gpm _________ft. x ____________ft. of hd./100 ft. =____________ft. of hd.

Return Piping(to FC) _________@ ___gpm ________ft. x __________ft. of hd./100 ft. =____________ft. of hd.

4Pipe Size

NOTE: If using pumps other than shown, refer to the manufacturer’s performance data for those pumps.

Grundfos Pump Curve - UP26 - 99

50

60

70

UP26-99 SINGLE

UP26-99 DOUBLE

0

10

20

30

40

0 5 10 15 20 25 30 35

HE

AD

(FE

ET

)

FLOW (GPM)

Page 3: Pressure Drop Calculation - waterfurnace.com · Pressure Drop Calculation Please fill out the attached worksheet complete with pump curve plotted. Unit is a NDV064A111CTL

Unit Pressure Drop Tables

Residential Unit Pressure Drop

Ent. Water Temp. CorrectionºF ºC Factor30 -1 1.0870 21 0.9390 32 0.88110 43 0.83

* Pressure Drops shown at50ºF EWT. For PressureDrops at other EWTs, use table below.

Closed Loop (minimum) Closed Loop (optimum)

Series Model & Size Flow Rate Pressure Drop* Flow Rate Pressure Drop*

GPM PSI Ft. Head GPM PSI Ft. Head

NS022 4.5 1.6 3.8 6.0 2.7 6.2

NS030 6.0 2.8 6.6 8.0 4.8 11.1

Envision NS036 7.0 1.9 4.5 9.0 3.3 7.5

Single Speed NS042 8.0 2.1 4.8 11.0 4.1 9.4

NS048 9.0 2.1 4.9 12.0 3.7 8.4

NS060 12.0 3.6 8.4 15.0 5.3 12.3

NS070 15.0 4.0 9.3 18.0 5.5 12.7

ND026 Low 5.0 1.8 4.3 7.0 3.4 7.9

ND026 High 6.0 2.6 6.0 8.0 4.4 10.1

ND038 Low 6.0 1.6 3.7 8.0 2.6 6.1

Envision ND038 High 7.0 2.1 4.8 9.0 3.2 7.4

Dual Capacity ND049 Low 8.0 1.8 4.2 11.0 3.1 7.2

ND049 High 9.0 2.2 5.2 12.0 3.6 8.4

ND064 Low 10.0 2.5 5.7 14.0 4.7 10.8

ND064 High 12.0 3.5 8.1 16.0 6.0 13.8

ND072 Low 13.0 3.3 7.5 16.0 4.6 10.6

ND072 High 15.0 4.2 9.8 18.0 5.7 13.1

E024 4.5 1.4 3.2 6.0 2.4 5.6

E030 5.5 2.0 4.7 7.0 3.1 7.2

E & EZ E035 7.0 3.4 7.9 9.0 5.4 12.4

Single Speed E040 8.0 3.3 7.7 11.0 4.7 10.9

E047 9.0 3.5 8.2 12.0 5.6 12.9

E058 11.0 2.9 6.7 14.0 4.6 10.6

E066 13.0 4.1 9.5 16.0 5.8 13.4

E036 Low 4.0 1.0 2.2 5.0 1.5 3.4

E036 High 7.0 2.8 6.5 9.0 4.5 10.4

E048 Low 6.0 1.9 4.4 9.0 3.5 8.1

E & EZ E048 High 9.0 3.5 8.1 12.0 5.6 12.9

Dual Capacity E060 Low 8.0 2.0 4.6 11.0 2.9 6.7

E060 High 11.0 2.9 6.7 14.0 4.6 10.6

E072 Low 10.0 2.6 6.0 13.0 4.1 9.5

E072 High 13.0 4.1 9.5 16.0 5.8 13.4

ES ES024 4.5 1.8 4.2 6.0 2.7 6.2

Single Speed ES030 6.0 2.7 6.3 8.0 4.4 10.2

ES036 Low 4.0 1.2 2.7 5.0 1.7 3.9

ES036 High 7.0 2.9 6.7 9.0 4.7 10.9

ES048 Low 6.0 1.9 4.4 9.0 3.5 8.1

ES ES048 High 9.0 3.5 8.2 12.0 5.6 12.9

Dual Capacity ES060 Low 8.0 2.0 4.6 11.0 2.9 6.7

ES060 High 11.0 2.9 6.7 14.0 4.6 10.6

ES072 Low 10.0 2.6 6.0 13.0 4.1 9.5

ES072 High 13.0 4.1 9.5 16.0 5.8 13.4

RT046 9.0 5.2 12.0 12.0 8.3 19.2

Synergy3 RT056 11.0 5.4 12.5 14.0 7.7 17.8

RT066 13.0 6.7 15.5 16.0 10.3 23.8

Page 4: Pressure Drop Calculation - waterfurnace.com · Pressure Drop Calculation Please fill out the attached worksheet complete with pump curve plotted. Unit is a NDV064A111CTL

Pipe Pressure Drop Tables

Pressure Drop for Rubber HosePer 100 ft, of hose, in feet of head

BRINE 1 WATER @ 32°F BRINE 4 20% METHANOL @ 30°F Viscosity 0.001243 lbm/ft sec Darcy-Weisbach Method Viscosity 0.002072 lbm/ft sec Darcy-Weisbach MethodDensity 62.42 lb/ft3 Density 60.80 lb/ft3

FLOWRATE

1” IPS RUBBER HOSE 1 1/2” IPS RUBBER HOSE FLOWRATE

1” IPS RUBBER HOSE 1 1/2” IPS RUBBER HOSEPD (ft) Vel ft/s Re PD (ft) Vel ft/s Re PD (ft) Vel ft/s Re PD (ft) Vel ft/s Re

1 0.15 0.41 1711 0.02 0.21 1141 1 0.18 0.41 1000 0.03 0.21 6672 0.52 0.82 3422 0.08 0.43 2281 2 0.59 0.82 2000 0.09 0.43 13333 1.05 1.23 5133 0.15 0.64 3422 3 1.21 1.23 2999 0.18 0.64 20004 1.74 1.64 6844 0.25 0.86 4562 4 2.00 1.64 3999 0.29 0.86 26665 2.58 2.04 8555 0.38 1.07 5703 5 2.95 2.04 4999 0.43 1.07 33336 3.55 2.45 10266 0.52 1.29 6844 6 4.06 2.45 5999 0.59 1.29 39997 4.64 2.86 11976 0.68 1.50 7984 7 5.31 2.86 6998 0.77 1.50 46668 5.87 3.27 13687 0.86 1.72 9125 8 6.71 3.27 7998 0.98 1.72 53329 7.21 3.68 15398 1.05 1.93 10266 9 8.25 3.68 8998 1.20 1.93 5999

10 8.67 4.09 17109 1.26 2.15 11406 10 9.92 4.09 9998 1.45 2.15 666511 10.24 4.50 18820 1.49 2.36 12547 11 11.72 4.50 10997 1.71 2.36 733212 11.93 4.91 20531 1.74 2.58 13687 12 13.64 4.91 11997 1.99 2.58 799813 13.72 5.31 22242 2.00 2.79 14828 13 15.70 5.31 12997 2.29 2.79 866514 15.62 5.72 23953 2.28 3.01 15969 14 17.87 5.72 13997 2.60 3.01 933115 17.63 6.13 25664 2.57 3.22 17109 15 20.16 6.13 14996 2.94 3.22 999816 19.74 6.54 27375 2.88 3.43 18250 16 22.57 6.54 15996 3.29 3.43 1066417 21.94 6.95 29086 3.20 3.65 19390 17 25.10 6.95 16996 3.66 3.65 1133118 24.25 7.36 30797 3.53 3.86 20531 18 27.74 7.36 17996 4.04 3.86 1199719 26.66 7.77 32508 3.89 4.08 21672 19 30.49 7.77 18995 4.44 4.08 1266420 29.16 8.18 34219 4.25 4.29 22812 20 33.36 8.18 19995 4.86 4.29 1333021 4.63 4.51 23953 21 5.29 4.51 1399722 5.02 4.72 25094 22 5.74 4.72 1466323 5.43 4.94 26234 23 6.21 4.94 1533024 5.85 5.15 27375 24 6.69 5.15 1599625 6.28 5.37 28515 25 7.18 5.37 1666326 6.73 5.58 29656 26 7.69 5.58 1732928 7.66 6.01 31937 28 8.76 6.01 1866230 8.64 6.44 34219 30 9.88 6.44 19995

Rev. 1/06 Rev. 1/06

BRINE 8 25% ETHANOL @ 30°F BRINE 5 30% PROPYLENE GLYCOL @ 30°FViscosity 0.003593 lbm/ft sec Darcy-Weisbach Method Viscosity 0.004972 lbm/ft sec Darcy-Weisbach MethodDensity 61.30 lb/ft3 Density 64.50 lb/ft3

FLOWRATE

1” IPS RUBBER HOSE 1 1/2” IPS RUBBER HOSE FLOWRATE

1” IPS RUBBER HOSE 1 1/2” IPS RUBBER HOSEPD (ft) Vel ft/s Re PD (ft) Vel ft/s Re PD (ft) Vel ft/s Re PD (ft) Vel ft/s Re

1 0.20 0.41 581 0.03 0.21 388 1 0.22 0.41 442 0.03 0.21 2952 0.68 0.82 1163 0.10 0.43 775 2 0.73 0.82 884 0.11 0.43 5893 1.38 1.23 1744 0.20 0.64 1163 3 1.48 1.23 1326 0.22 0.64 8844 2.28 1.64 2325 0.33 0.86 1550 4 2.45 1.64 1768 0.36 0.86 11795 3.38 2.04 2906 0.49 1.07 1938 5 3.62 2.04 2210 0.53 1.07 14736 4.65 2.45 3488 0.68 1.29 2325 6 4.97 2.45 2652 0.72 1.29 17687 6.08 2.86 4069 0.89 1.50 2713 7 6.52 2.86 3094 0.95 1.50 20638 7.69 3.27 4650 1.12 1.72 3100 8 8.23 3.27 3536 1.20 1.72 23579 9.44 3.68 5231 1.38 1.93 3488 9 10.11 3.68 3978 1.47 1.93 2652

10 11.36 4.09 5813 1.66 2.15 3875 10 12.16 4.09 4420 1.77 2.15 294711 13.42 4.50 6394 1.96 2.36 4263 11 14.37 4.50 4862 2.09 2.36 324112 15.63 4.91 6975 2.28 2.58 4650 12 16.73 4.91 5304 2.44 2.58 353613 17.97 5.31 7557 2.62 2.79 5038 13 19.25 5.31 5746 2.81 2.79 383114 20.46 5.72 8138 2.98 3.01 5425 14 21.91 5.72 6188 3.19 3.01 412515 23.09 6.13 8719 3.37 3.22 5813 15 24.73 6.13 6630 3.60 3.22 442016 25.85 6.54 9300 3.77 3.43 6200 16 27.68 6.54 7072 4.03 3.43 471517 28.74 6.95 9882 4.19 3.65 6588 17 30.78 6.95 7514 4.49 3.65 500918 31.77 7.36 10463 4.63 3.86 6975 18 34.02 7.36 7956 4.96 3.86 530419 34.92 7.77 11044 5.09 4.08 7363 19 37.40 7.77 8398 5.45 4.08 559820 38.20 8.18 11626 5.57 4.29 7750 20 40.91 8.18 8840 5.96 4.29 589321 6.06 4.51 8138 21 6.49 4.51 618822 6.58 4.72 8525 22 7.04 4.72 648223 7.11 4.94 8913 23 7.61 4.94 677724 7.66 5.15 9300 24 8.20 5.15 707225 8.23 5.37 9688 25 8.81 5.37 736626 8.81 5.58 10075 26 9.44 5.58 766128 10.03 6.01 10850 28 10.74 6.01 825030 11.32 6.44 11626 30 12.12 6.44 8840

Rev. 1/06 Rev. 1/06

Page 5: Pressure Drop Calculation - waterfurnace.com · Pressure Drop Calculation Please fill out the attached worksheet complete with pump curve plotted. Unit is a NDV064A111CTL

Pipe Pressure Drop Tables (cont.)

Pressure Drop, Polyethylene Pipe, SDR 11Per 100 ft. of pipe, in feet of head

BRINE 1 WATER @ 32°FViscosity 0.001243 lbm/ft secDensity 62.42 lb/ft3 Darcy-Weisbach Method

FLOWRATE

3/4” IPS SDR 11 1” IPS SDR 11 1 1/4” IPS SDR 11 1 1/2” IPS SDR 11 2” IPS SDR 11PD (ft) Vel ft/s Re 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 0.32 0.55 1989 0.11 0.35 1591 0.04 0.22 1260 0.02 0.17 1101 0.01 0.11 8812 1.06 1.11 3979 0.37 0.71 3183 0.12 0.44 2520 0.06 0.34 2202 0.02 0.22 17613 2.16 1.66 5968 0.75 1.06 4774 0.25 0.66 3780 0.13 0.51 3303 0.04 0.32 26424 3.57 2.21 7958 1.24 1.41 6365 0.41 0.89 5040 0.21 0.68 4404 0.07 0.43 35235 5.28 2.76 9947 1.83 1.77 7956 0.60 1.11 6299 0.32 0.85 5505 0.11 0.54 44036 7.26 3.32 11937 2.51 2.12 9548 0.83 1.33 7559 0.44 1.02 6606 0.15 0.65 52847 9.51 3.87 13926 3.29 2.48 11139 1.09 1.55 8819 0.57 1.19 7707 0.20 0.76 61658 12.01 4.42 15916 4.16 2.83 12730 1.37 1.77 10079 0.72 1.35 8808 0.25 0.87 70459 14.76 4.98 17905 5.11 3.18 14321 1.69 1.99 11339 0.89 1.52 9909 0.31 0.97 7926

10 17.75 5.53 19894 6.14 3.54 15913 2.03 2.22 12599 1.07 1.69 11010 0.37 1.08 880611 20.97 6.08 21884 7.26 3.89 17504 2.39 2.44 13859 1.26 1.86 12111 0.44 1.19 968712 24.42 6.63 23873 8.45 4.24 19095 2.79 2.66 15119 1.47 2.03 13212 0.51 1.30 1056813 28.09 7.19 25863 9.72 4.60 20686 3.21 2.88 16378 1.69 2.20 14313 0.59 1.41 1144814 11.07 4.95 22278 3.65 3.10 17638 1.92 2.37 15414 0.67 1.52 1232915 12.49 5.30 23869 4.12 3.32 18898 2.17 2.54 16515 0.75 1.62 1321016 13.99 5.66 25460 4.61 3.55 20158 2.43 2.71 17616 0.84 1.73 1409017 15.55 6.01 27051 5.13 3.77 21418 2.70 2.88 18717 0.94 1.84 1497118 17.19 6.37 28643 5.67 3.99 22678 2.99 3.05 19818 1.03 1.95 1585219 18.89 6.72 30234 6.23 4.21 23938 3.28 3.22 20919 1.14 2.06 1673220 20.67 7.07 31825 6.82 4.43 25198 3.59 3.39 22020 1.24 2.17 1761321 22.51 7.43 33417 7.42 4.65 26458 3.91 3.56 23121 1.35 2.27 1849422 24.42 7.78 35008 8.05 4.87 27717 4.25 3.72 24222 1.47 2.38 1937423 26.39 8.13 36599 8.71 5.10 28977 4.59 3.89 25323 1.59 2.49 2025524 9.38 5.32 30237 4.94 4.06 26424 1.71 2.60 2113625 10.07 5.54 31497 5.31 4.23 27525 1.84 2.71 2201626 10.79 5.76 32757 5.69 4.40 28626 1.97 2.82 2289728 12.28 6.20 35277 6.47 4.74 30827 2.24 3.03 2465830 13.86 6.65 37796 7.30 5.08 33029 2.53 3.25 2641932 15.52 7.09 40316 8.18 5.42 35231 2.83 3.47 2818134 17.25 7.53 42836 9.09 5.76 37433 3.15 3.68 2994236 19.07 7.98 45356 10.05 6.09 39635 3.48 3.90 3170338 20.96 8.42 47876 11.05 6.43 41837 3.83 4.12 3346540 22.93 8.86 50395 12.09 6.77 44039 4.18 4.33 3522642 24.97 9.31 52915 13.16 7.11 46241 4.56 4.55 3698744 27.09 9.75 55435 14.28 7.45 48443 4.94 4.77 3874946 29.28 10.19 57955 15.43 7.79 50645 5.34 4.98 4051048 16.63 8.13 52847 5.76 5.20 4227150 17.86 8.47 55049 6.18 5.42 44032

Rev. 1/06

BRINE 2 WATER @ 50°FViscosity 0.000912 lbm/ft secDensity 62.42 lb/ft3 Darcy-Weisbach Method

FLOWRATE

3/4” IPS SDR 11 1” IPS SDR 11 1 1/4” IPS SDR 11 1 1/2” IPS SDR 11 2” IPS SDR 11PD (ft) Vel ft/s Re 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 0.29 0.55 2711 0.10 0.35 2169 0.03 0.22 1717 0.02 0.17 1501 0.01 0.11 12002 0.98 1.11 5423 0.34 0.71 4338 0.11 0.44 3434 0.06 0.34 3001 0.02 0.22 24013 2.00 1.66 8134 0.69 1.06 6506 0.23 0.66 5151 0.12 0.51 4502 0.04 0.32 36014 3.30 2.21 10846 1.14 1.41 8675 0.38 0.89 6869 0.20 0.68 6002 0.07 0.43 48015 4.88 2.76 13557 1.69 1.77 10844 0.56 1.11 8586 0.29 0.85 7503 0.10 0.54 60016 6.72 3.32 16269 2.33 2.12 13013 0.77 1.33 10303 0.40 1.02 9003 0.14 0.65 72027 8.80 3.87 18980 3.05 2.48 15182 1.00 1.55 12020 0.53 1.19 10504 0.18 0.76 84028 11.12 4.42 21692 3.85 2.83 17350 1.27 1.77 13737 0.67 1.35 12005 0.23 0.87 96029 13.66 4.98 24403 4.73 3.18 19519 1.56 1.99 15454 0.82 1.52 13505 0.28 0.97 10802

10 16.43 5.53 27115 5.69 3.54 21688 1.88 2.22 17171 0.99 1.69 15006 0.34 1.08 1200311 19.41 6.08 29826 6.72 3.89 23857 2.22 2.44 18889 1.17 1.86 16506 0.40 1.19 1320312 22.60 6.63 32538 7.82 4.24 26026 2.58 2.66 20606 1.36 2.03 18007 0.47 1.30 1440313 26.00 7.19 35249 9.00 4.60 28194 2.97 2.88 22323 1.56 2.20 19507 0.54 1.41 1560414 10.25 4.95 30363 3.38 3.10 24040 1.78 2.37 21008 0.62 1.52 1680415 11.56 5.30 32532 3.81 3.32 25757 2.01 2.54 22509 0.70 1.62 1800416 12.94 5.66 34701 4.27 3.55 27474 2.25 2.71 24009 0.78 1.73 1920417 14.39 6.01 36869 4.75 3.77 29191 2.50 2.88 25510 0.87 1.84 2040518 15.91 6.37 39038 5.25 3.99 30909 2.77 3.05 27010 0.96 1.95 2160519 17.49 6.72 41207 5.77 4.21 32626 3.04 3.22 28511 1.05 2.06 2280520 19.13 7.07 43376 6.31 4.43 34343 3.33 3.39 30011 1.15 2.17 2400521 20.83 7.43 45545 6.87 4.65 36060 3.62 3.56 31512 1.25 2.27 2520622 22.60 7.78 47713 7.45 4.87 37777 3.93 3.72 33013 1.36 2.38 2640623 24.43 8.13 49882 8.06 5.10 39494 4.25 3.89 34513 1.47 2.49 2760624 8.68 5.32 41211 4.58 4.06 36014 1.58 2.60 2880725 9.32 5.54 42929 4.91 4.23 37514 1.70 2.71 3000726 9.99 5.76 44646 5.26 4.40 39015 1.82 2.82 3120728 11.37 6.20 48080 5.99 4.74 42016 2.07 3.03 3360830 12.83 6.65 51514 6.76 5.08 45017 2.34 3.25 3600832 14.36 7.09 54949 7.57 5.42 48018 2.62 3.47 3840934 15.97 7.53 58383 8.42 5.76 51019 2.91 3.68 4080936 17.65 7.98 61817 9.30 6.09 54021 3.22 3.90 4321038 19.40 8.42 65251 10.22 6.43 57022 3.54 4.12 4561040 21.22 8.86 68686 11.19 6.77 60023 3.87 4.33 4801142 23.11 9.31 72120 12.18 7.11 63024 4.22 4.55 5041144 25.07 9.75 75554 13.22 7.45 66025 4.58 4.77 5281246 27.10 10.19 78989 14.28 7.79 69026 4.95 4.98 5521248 15.39 8.13 72027 5.33 5.20 5761350 16.53 8.47 75029 5.72 5.42 60014

Rev. 1/06

Page 6: Pressure Drop Calculation - waterfurnace.com · Pressure Drop Calculation Please fill out the attached worksheet complete with pump curve plotted. Unit is a NDV064A111CTL

Pressure Drop, Polyethylene Pipe, SDR11

Per 100 ft. of pipe, in feet of head

BRINE 8 25% ETHANOL @ 30°F

Viscosity 0.003593 lbm/ft sec

Density 61.30 lb/ft3 Darcy-Weisbach Method

FLOWRATE

3/4” IPS SDR 11 1” IPS SDR 11 1 1/4” IPS SDR 11 1 1/2” IPS SDR 11 2” IPS SDR 11PD (ft) Vel ft/s Re 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 0.41 0.55 676 0.14 0.35 541 0.05 0.22 428 0.02 0.17 374 0.01 0.11 2992 1.39 1.11 1352 0.48 0.71 1081 0.16 0.44 856 0.08 0.34 748 0.03 0.22 5983 2.83 1.66 2028 0.98 1.06 1622 0.32 0.66 1284 0.17 0.51 1122 0.06 0.32 8984 4.68 2.21 2704 1.62 1.41 2162 0.53 0.89 1712 0.28 0.68 1496 0.10 0.43 11975 6.91 2.76 3379 2.39 1.77 2703 0.79 1.11 2140 0.42 0.85 1870 0.14 0.54 14966 9.51 3.32 4055 3.29 2.12 3244 1.09 1.33 2568 0.57 1.02 2244 0.20 0.65 17957 12.45 3.87 4731 4.31 2.48 3784 1.42 1.55 2996 0.75 1.19 2618 0.26 0.76 20948 15.73 4.42 5407 5.45 2.83 4325 1.80 1.77 3424 0.95 1.35 2992 0.33 0.87 23949 19.33 4.98 6083 6.69 3.18 4866 2.21 1.99 3852 1.16 1.52 3366 0.40 0.97 2693

10 23.25 5.53 6759 8.05 3.54 5406 2.65 2.22 4280 1.40 1.69 3741 0.48 1.08 299211 27.47 6.08 7435 9.51 3.89 5947 3.14 2.44 4708 1.65 1.86 4115 0.57 1.19 329112 31.99 6.63 8111 11.07 4.24 6487 3.65 2.66 5136 1.93 2.03 4489 0.67 1.30 359013 36.79 7.19 8787 12.74 4.60 7028 4.20 2.88 5564 2.21 2.20 4863 0.77 1.41 389014 14.50 4.95 7569 4.78 3.10 5993 2.52 2.37 5237 0.87 1.52 418915 16.36 5.30 8109 5.40 3.32 6421 2.84 2.54 5611 0.98 1.62 448816 18.32 5.66 8650 6.04 3.55 6849 3.18 2.71 5985 1.10 1.73 478717 20.37 6.01 9191 6.72 3.77 7277 3.54 2.88 6359 1.23 1.84 508618 22.51 6.37 9731 7.43 3.99 7705 3.91 3.05 6733 1.36 1.95 538619 24.75 6.72 10272 8.16 4.21 8133 4.30 3.22 7107 1.49 2.06 568520 27.07 7.07 10812 8.93 4.43 8561 4.71 3.39 7481 1.63 2.17 598421 29.48 7.43 11353 9.72 4.65 8989 5.13 3.56 7855 1.77 2.27 628322 31.98 7.78 11894 10.55 4.87 9417 5.56 3.72 8229 1.93 2.38 658223 34.57 8.13 12434 11.40 5.10 9845 6.01 3.89 8603 2.08 2.49 688124 12.28 5.32 10273 6.47 4.06 8977 2.24 2.60 718125 13.19 5.54 10701 6.95 4.23 9351 2.41 2.71 748026 14.13 5.76 11129 7.45 4.40 9725 2.58 2.82 777928 16.09 6.20 11985 8.48 4.74 10473 2.94 3.03 837730 18.15 6.65 12841 9.57 5.08 11222 3.31 3.25 897632 20.32 7.09 13697 10.71 5.42 11970 3.71 3.47 957434 22.60 7.53 14553 11.91 5.76 12718 4.12 3.68 1017336 24.98 7.98 15409 13.16 6.09 13466 4.56 3.90 1077138 27.45 8.42 16265 14.47 6.43 14214 5.01 4.12 1136940 30.03 8.86 17121 15.83 6.77 14962 5.48 4.33 1196842 32.71 9.31 17978 17.24 7.11 15710 5.97 4.55 1256644 35.48 9.75 18834 18.70 7.45 16458 6.48 4.77 1316546 38.35 10.19 19690 20.22 7.79 17206 7.00 4.98 1376348 21.78 8.13 17954 7.54 5.20 1436150 23.39 8.47 18703 8.10 5.42 14960

BRINE 4 20% METHANOL @ 30°F Viscosity 0.002072 lbm/ft secDensity 60.80 lb/ft3 Darcy-Weisbach Method

FLOWRATE

3/4” IPS SDR 11 1” IPS SDR 11 1 1/4” IPS SDR 11 1 1/2” IPS SDR 11 2” IPS SDR 11PD (ft) Vel ft/s Re 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 0.36 0.55 1162 0.12 0.35 930 0.04 0.22 736 0.02 0.17 643 0.01 0.11 5152 1.21 1.11 2325 0.42 0.71 1860 0.14 0.44 1472 0.07 0.34 1287 0.03 0.22 10293 2.47 1.66 3487 0.85 1.06 2789 0.28 0.66 2209 0.15 0.51 1930 0.05 0.32 15444 4.08 2.21 4650 1.41 1.41 3719 0.47 0.89 2945 0.25 0.68 2573 0.09 0.43 20585 6.04 2.76 5812 2.09 1.77 4649 0.69 1.11 3681 0.36 0.85 3217 0.13 0.54 25736 8.30 3.32 6975 2.87 2.12 5579 0.95 1.33 4417 0.50 1.02 3860 0.17 0.65 30887 10.87 3.87 8137 3.76 2.48 6509 1.24 1.55 5153 0.65 1.19 4503 0.23 0.76 36028 13.74 4.42 9300 4.76 2.83 7439 1.57 1.77 5890 0.83 1.35 5147 0.29 0.87 41179 16.88 4.98 10462 5.84 3.18 8368 1.93 1.99 6626 1.02 1.52 5790 0.35 0.97 4631

10 20.30 5.53 11625 7.03 3.54 9298 2.32 2.22 7362 1.22 1.69 6433 0.42 1.08 514611 23.99 6.08 12787 8.30 3.89 10228 2.74 2.44 8098 1.44 1.86 7077 0.50 1.19 566112 27.93 6.63 13950 9.67 4.24 11158 3.19 2.66 8834 1.68 2.03 7720 0.58 1.30 617513 32.13 7.19 15112 11.12 4.60 12088 3.67 2.88 9571 1.93 2.20 8363 0.67 1.41 669014 12.66 4.95 13018 4.18 3.10 10307 2.20 2.37 9007 0.76 1.52 720415 14.29 5.30 13947 4.71 3.32 11043 2.48 2.54 9650 0.86 1.62 771916 16.00 5.66 14877 5.28 3.55 11779 2.78 2.71 10293 0.96 1.73 823317 17.79 6.01 15807 5.87 3.77 12515 3.09 2.88 10937 1.07 1.84 874818 19.66 6.37 16737 6.48 3.99 13251 3.42 3.05 11580 1.18 1.95 926319 21.61 6.72 17667 7.13 4.21 13988 3.76 3.22 12223 1.30 2.06 977720 23.64 7.07 18597 7.80 4.43 14724 4.11 3.39 12867 1.42 2.17 1029221 25.75 7.43 19526 8.49 4.65 15460 4.48 3.56 13510 1.55 2.27 1080622 27.93 7.78 20456 9.21 4.87 16196 4.86 3.72 14154 1.68 2.38 1132123 30.19 8.13 21386 9.96 5.10 16932 5.25 3.89 14797 1.82 2.49 1183624 10.73 5.32 17669 5.65 4.06 15440 1.96 2.60 1235025 11.52 5.54 18405 6.07 4.23 16084 2.10 2.71 1286526 12.34 5.76 19141 6.50 4.40 16727 2.25 2.82 1337928 14.05 6.20 20613 7.40 4.74 18014 2.56 3.03 1440930 15.85 6.65 22086 8.36 5.08 19300 2.89 3.25 1543832 17.75 7.09 23558 9.35 5.42 20587 3.24 3.47 1646734 19.73 7.53 25031 10.40 5.76 21874 3.60 3.68 1749636 21.81 7.98 26503 11.50 6.09 23160 3.98 3.90 1852538 23.97 8.42 27975 12.64 6.43 24447 4.37 4.12 1955540 26.22 8.86 29448 13.82 6.77 25734 4.79 4.33 2058442 28.56 9.31 30920 15.05 7.11 27020 5.21 4.55 2161344 30.98 9.75 32392 16.33 7.45 28307 5.65 4.77 2264246 33.49 10.19 33865 17.65 7.79 29594 6.11 4.98 2367148 19.02 8.13 30880 6.58 5.20 2470050 20.43 8.47 32167 7.07 5.42 25730

Rev. 1/6/06

Rev. 1/6/06

Pipe Pressure Drop Tables (cont.)

Page 7: Pressure Drop Calculation - waterfurnace.com · Pressure Drop Calculation Please fill out the attached worksheet complete with pump curve plotted. Unit is a NDV064A111CTL

Pipe Pressure Drop Tables (cont.)

Pressure Drop, Polyethylene Pipe, SDR 11

Per 100 ft. of pipe, in feet of head

BRINE 5 30% PROPYLENE GLYCOL @ 30°F

Viscosity 0.004972 lbm/ft sec

Density 64.50 lb/ft3 Darcy-Weisbach Method

FLOWRATE

3/4” IPS SDR 11 1” IPS SDR 11 1 1/4” IPS SDR 11 1 1/2” IPS SDR 11 2” IPS SDR 11PD (ft) Vel ft/s Re 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 0.44 0.55 514 0.15 0.35 411 0.05 0.22 325 0.03 0.17 284 0.01 0.11 2272 1.49 1.11 1028 0.52 0.71 822 0.17 0.44 651 0.09 0.34 569 0.03 0.22 4553 3.03 1.66 1542 1.05 1.06 1233 0.35 0.66 976 0.18 0.51 853 0.06 0.32 6824 5.01 2.21 2056 1.73 1.41 1644 0.57 0.89 1302 0.30 0.68 1138 0.10 0.43 9105 7.40 2.76 2570 2.56 1.77 2055 0.85 1.11 1627 0.45 0.85 1422 0.15 0.54 11376 10.18 3.32 3084 3.53 2.12 2466 1.16 1.33 1953 0.61 1.02 1707 0.21 0.65 13657 13.34 3.87 3598 4.62 2.48 2878 1.52 1.55 2278 0.80 1.19 1991 0.28 0.76 15928 16.85 4.42 4111 5.83 2.83 3289 1.92 1.77 2604 1.01 1.35 2275 0.35 0.87 18209 20.70 4.98 4625 7.17 3.18 3700 2.36 1.99 2929 1.25 1.52 2560 0.43 0.97 2047

10 24.90 5.53 5139 8.62 3.54 4111 2.84 2.22 3255 1.50 1.69 2844 0.52 1.08 227511 29.41 6.08 5653 10.18 3.89 4522 3.36 2.44 3580 1.77 1.86 3129 0.61 1.19 250212 34.25 6.63 6167 11.86 4.24 4933 3.91 2.66 3906 2.06 2.03 3413 0.71 1.30 273013 39.40 7.19 6681 13.64 4.60 5344 4.50 2.88 4231 2.37 2.20 3697 0.82 1.41 295714 15.53 4.95 5755 5.12 3.10 4557 2.70 2.37 3982 0.93 1.52 318515 17.52 5.30 6166 5.78 3.32 4882 3.05 2.54 4266 1.05 1.62 341216 19.62 5.66 6577 6.47 3.55 5207 3.41 2.71 4551 1.18 1.73 364017 21.81 6.01 6988 7.19 3.77 5533 3.79 2.88 4835 1.31 1.84 386718 24.11 6.37 7399 7.95 3.99 5858 4.19 3.05 5120 1.45 1.95 409519 26.50 6.72 7810 8.74 4.21 6184 4.61 3.22 5404 1.60 2.06 432220 28.99 7.07 8221 9.56 4.43 6509 5.04 3.39 5688 1.74 2.17 455021 31.57 7.43 8633 10.41 4.65 6835 5.49 3.56 5973 1.90 2.27 477722 34.25 7.78 9044 11.30 4.87 7160 5.95 3.72 6257 2.06 2.38 500523 37.02 8.13 9455 12.21 5.10 7486 6.44 3.89 6542 2.23 2.49 523224 13.16 5.32 7811 6.93 4.06 6826 2.40 2.60 546025 14.13 5.54 8137 7.45 4.23 7110 2.58 2.71 568726 15.13 5.76 8462 7.98 4.40 7395 2.76 2.82 591528 17.23 6.20 9113 9.08 4.74 7964 3.14 3.03 637030 19.44 6.65 9764 10.25 5.08 8533 3.55 3.25 682532 21.76 7.09 10415 11.47 5.42 9101 3.97 3.47 728034 24.20 7.53 11066 12.76 5.76 9670 4.42 3.68 773536 26.75 7.98 11717 14.10 6.09 10239 4.88 3.90 819038 29.40 8.42 12368 15.50 6.43 10808 5.37 4.12 864540 32.16 8.86 13019 16.95 6.77 11377 5.87 4.33 910042 35.03 9.31 13670 18.46 7.11 11946 6.39 4.55 955544 38.00 9.75 14321 20.03 7.45 12514 6.93 4.77 1001046 41.07 10.19 14971 21.65 7.79 13083 7.50 4.98 1046548 23.32 8.13 13652 8.08 5.20 1092050 25.05 8.47 14221 8.67 5.42 11375

Rev. 1/06


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