B09_Attach_28_Well_Pump_Calcs_0003.pdf
PDF 631 KB Posted
- Attached to
- ACAD 312255 - Rehabilitate Schoodic Water System
- Solicitation number
- 140P2022R0043
About this file
This document contains engineering calculations and technical specifications for a submersible well pump to be used in the ACAD 312255 project to rehabilitate the Schoodic water system for Acadia National Park. Key details include:
-
Hydraulic calculations determine a 5 HP pump is required to meet the design flow of 75 GPM against a total dynamic head of 174.5 feet. Detailed headloss calculations are provided for pipe segments and fittings in the distribution system. System curves show the pump and system performance characteristics.
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Technical specifications and construction details for Goulds model 85GS50-M50412 submersible well pump indicate a rated capacity of 81.7 GPM at 177 feet TDS. Dimensions, materials of construction, hydraulic performance curves and power requirements are specified. The pump is to be driven by a 5 HP 230V single phase motor.
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PROJECT NAME/NO. ACADIA Schoodic W/WW
SHEET NO. OF
CALCULATED BY J. SREY DATE 3/21/2022
CHECKED BY P. QUERN DATE 3/21/2022
SUBJECT Well Pump Clalc
PUMP HORSEPOWER CALCULATION
Desired Design Flow (gpm) = 70
Discharge Elevation/HGL (ft) = 66 Suction Elevation/HGL (ft) = 40 drawdown to 5' above pump intake
Static Head/Lift (ft) = 26 Pump Station Friction Head (ft) = 33 see headloss tab
Distribution System Friction Head (ft) = 115.5 50 psi at backpressure TDH ft) = 174.5
Anticipated Pump Efficiency = 63% combined pump/motor,see pump curve Anticipated Motor Efficiency =
Calculated HP = 4.9
Recommended Motor HP = 5 standard motor size
Discharge Pressure (psi) = 75.5 at pump
Lift to discharge pipe (ft) = 109 Lift to discharge pipe (psi) = 47.2
Discharge Pressure (psi) = 28.4 in pump station
WELL PUMP
EL. 154'
EL. 152
EL. 149 FF
Static Water Level = 152 - 100 = 52' Set at 50 psi
Low Water Level (assume 5' above pump intake) = EL. 40'
EL. 66
top of screen 120' depth = EL. 32'
30' long well screen Backpressure Valve bottom of well 150' depth = EL. 2'
CALCULATED BY J. SREY DATE 3/21/2022
CHECKED BY P. QUERN DATE 3/21/2022
SUBJECT Well Pump Clalc
DESIGN FLOW OF 75 GPM
Segment 1 - Drop pipe to discharge Segment 2 - Discharge in Building to HDPE Adapter Segment 3 - Discharge HDPE to gate valve Segment 4 - Existing Main to WTP segment flow = 75 Major Losses Size Length Flow Velocity C-value hL Segment 1 4 120 75 1.92 120 0.62 Segment 2 4 19 75 1.92 120 0.10 Segment 3 4 3700 75 1.92 150 12.61 Segment 4 4 2576 75 1.92 100 18.59 Minor Losses Quantity K-value
Inlet/Outlet 4 1 75 1.92 1 0.06 Check Valve - Silent 4 1 75 1.92 0.94 0.05
Tee - thru branch 4 1 75 1.92 1.02 0.06 Ball Valve 4 1 75 1.92 0.05 0.00
Elbow - Standard - 90 4 8 75 1.92 0.51 0.23 Elbow - Standard - 45 4 6 75 1.92 0.27 0.09 select 4 0 75 1.92 0 0.00 32.41
TOTAL WELL HEADLOSS 32.41
CALCULATED BY J. SREY DATE
CHECKED BY P. QUERN DATE
SUBJECT Well Pump Clalc
CALCULATING HEADLOSSES FOR SYSTEM CURVE
flow = 20 40 60 80 100 120 Pipe Major Losses Size Length hL hL hL hL hL hL Segment 1 4 120 0.05 0.19 0.41 0.70 1.05 1.47 Segment 2 4 19 0.01 0.03 0.06 0.11 0.17 0.23 Segment 3 4 3700 1.09 3.94 8.34 14.21 21.47 30.08 Segment 4 4 2576 1.61 5.81 12.30 20.94 31.65 44.34
Fitting Minor Losses Inlet/Outlet 4 1 0.00 0.02 0.04 0.06 0.10 0.15
Check Valve - Silent 4 1 0.00 0.02 0.03 0.06 0.10 0.14 Tee - thru branch 4 1 0.00 0.02 0.04 0.07 0.10 0.15
Ball Valve 4 1 0.00 0.00 0.00 0.00 0.01 0.01 Elbow - Standard - 90 4 16 0.03 0.13 0.30 0.53 0.83 1.19 Elbow - Standard - 45 4 6 0.01 0.03 0.06 0.11 0.16 0.24 select 4 0 0.00 0.00 0.00 0.00 0.00 0.00 select 6 1 0.00 0.00 0.00 0.00 0.00 0.00 select 6 1 0.00 0.00 0.00 0.00 0.00 0.00
2.82 10.18 21.58 36.79 55.63 78.00
TOTAL WELL HEADLOSS 2.82 10.18 21.58 36.79 55.63 78.00
3/21/2022 3/21/2022
CALCULATED BY J. SREY DATE 3/21/2022
CHECKED BY P. QUERN DATE 3/21/2022
SUBJECT Well Pump Clalc
Pump Curve - Goulds System Curve 1 - Low Static Head Flow TDH Static Back- Friction Total gpm feet Flow Head pressure Head Head
0 309 gpm feet feet feet feet 20 295 0 14 115.5 0 129.50 40 268 20 14 115.5 0.18 129.68 60 228 40 14 115.5 2.82 132.32 80 177 60 14 115.5 10.18 139.68
100 127 80 14 115.5 21.58 151.08 120 60 100 14 115.5 36.79 166.29
120 14 115.5 55.63 185.13
100% Speed 3550 100% 88% 88% System Curve 2 - High Static Head
N2 3550 3124 3124 Static Back- Friction Total (N2/N1) 1.00 0.88 0.88 Flow Head pressure Head Head
(N2/N1)^2 1.00 0.77 0.77 gpm feet feet feet feet 0 26 115.5 0.00 141.50
Q2 H2 20 26 115.5 0.18 141.68 gpm FT 40 26 115.5 2.82 144.32
0.0 239.3 60 26 115.5 10.18 151.68
17.6 228.4 80 26 115.5 21.58 163.08
35.2 207.5 100 26 115.5 36.79 178.29
52.8 176.6 120 26 115.5 55.63 197.13
70.4 137.1
88.0 98.3
105.6 46.5
0 20 40 60 80 100 120 140
To ta l D yn am ic
H ea d (fe et
Flow (gpm)
New 5 HP Pump and System Curves
Single Pump
On VFD
Low Static Head
High Static Head
Fluid pH-v alue at t A
Operating temperature t A
Density at t A
Vapor pressure at t A
Kin. v iscosity at t A
Nominal f low
Nominal head
Static head
Inlet pressure
AltitudeAv ailable sy stem NPSH
°F psi lb/f t³ f t²/s
US g.p.m.
f t f t psi f tf t
Water
Solids
39.2
62.4
0 14.5
1.689E-5
Env ironmental temperature 68
°F
85GS50 - M50412
1 0No. of pumps Reserv e //
Pump ty pe
Operating data
Impeller R
Max.
designed
Min.
Speed
Max. working pressure
Nominal
Max-
Min-
Flow
No. of stages Nominal at Qmax at Qmin
Head
Head H(Q=0)
NPSH 3%
Shaf t power
Max. shaf t power
Ef f iciency psi inch inch inch
US g.p.m.
US g.p.m.
US g.p.m.
f t f t f t hp hp f t f t
133.8
Make
Max. casing pressure psi
59.9
308.5310
81.7
177.4
81.7( )
Pump data rpm
( )Weight
Motor data
Specif ic design
Rated power
Speed
Electric v oltage
Electric current
Degree of protection
Frame size
Ty pe 230 V (M50412)
1ph 3WIRE
5 hp
230 V
B
IP 55
3450 rpm
24 A lb 88
Remarks:
Project no.
Project
Customer Contact Phone number Email
25.03.2022Date
Insulation class
RAL 5010
Te ch ni ca l D at a
Colour
Goulds Water Technology
Submersible Well Pumps
Jennica Srey Line
Jennica Srey Line
Jennica Srey Line
Jennica Srey Text Box 200 V, M50430
Jennica Srey Line
Jennica Srey Text Box 3 phase
Jennica Srey Callout Per Addendum 1
Jennica Srey Arrow
Edward Whatley Cloud
85GS50 - M50412
Project no.
Project
Customer Contact Phone number Email
25.03.2022Date
C on st ru ct io n D at a
MaterialsPump
1 - Discharge Head
2 - Check Valv e Poppet
3 - Check Valv e Seal
4 - Check Valv e Seat
5 - Check Valv e Retaining Ring
6 - Bearing Spider - Upper
7 - Bearing
8 - Klipring
9 - Dif f user 10 - Impeller 11 - Bowl
12 - Intermediate Sleev e* 13 - Intermediate Shaf t Coupling* 14 - Intermediate Bearing Spider* 15 - Intermediate Bearing Spider*
Remarks:
AISI 304 SS
AISI 304 SS
AISI 303 SS
AISI 304 SS
17-4 PH Stainless Steel
AISI 304 SS, Powder Metal
16 - Shim
17 - Screws – Cable Guard
18 - Motor Adapter
19 - Casing
20 - Shaf t
21 - Coupling
AISI 303 SS
AISI 303 SS
BUNA, FDA Compliant
AISI 304 SS
AISI 302 SS
Glass f illed engineered composite
Proprietary Engineered Poly mer
AISI 301 SS
Glass Filled Engineered Composite Glass Filled Engineered Composite
AISI 304 SS
AISI 304 SS, Powder Metal AISI 304 SS, Powder Metal Glass f illed engineered composite
AISI 303 SS
85GS50 - M50412
Project no.
Project
Customer Contact Phone number Email
25.03.2022Date
Head
85GS50
177 ft
81.7 US g.p.m.
[ft]
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125[US g.p.m.]
Power data referred to:
Water [100%] ; 39.2°F; 62.4lb/ft³; 1.69E-5ft²/s
Operating Data Specification Flow Head
Hydraulic data (duty point)
Flow Head
170 f t 80 US g.p.m.
81.7 US g.p.m.
177 f t
Impeller R Frequency Speed
Impeller design
3450 rpm
0 inch
0 f tStatic head
Perf ormance according to ANSI/HI 14.6 - Grade 2B
Hz
Te nd er H yd ra ul ic
Hydraulic Data
Dimensions
Weight lb
L 4213/16
Motor Length 2711/16 inch
85GS50 - M50412
Project no.
Project
Customer Contact Phone number Email
25.03.2022Date
D im en si on al
D at a
Drawing
85GS50 with motor
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