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26
Pump Sizing Calculation Tables
APPENDIX B
—
Pump Sizing
Table 1: Head Loss Calculation Table for 2" PVC Fittings
Fitting Used
Equivalent Pipe Length
Head Loss of Fitting (ft)
Quantity Used
Totals
45° Elbow
2.7
90° Elbow
8.5
Sweep
3.6
Tee's
12
Total Fitting Equivalent Length (ft)
Feet of Straight Piping Used (ft)
Equivalent Sys Straight Pipe Length (ft)
SunSaver Eq Head
Loss (ft)
# Collectors on Roof/# Rows
Average Bank Size
Pressure Drop (ft)
/
System Dynamic
Head Loss
Calculation
System Flow Rate (GPM)
(#Collectors*0.1GPM/ft
2
ea.)
Head Loss/ft Piping (ft)
(from System Flow Rate)
Total Dynamic Head Loss (ft)
Vertical Head Loss (ft)
Head Loss in other Pool Equipment (ft)
Total Head Loss (ft)
Total Head Loss (psi)
Box A
Box B
Box C
Box D
Box E
Box F
Box G
Box H
Box I
Box J
Box K
Box L
Box M
Box N
Box O
Box P
Box Q
Box R
Box U
Box S
Box T
Box V
Box W
Box X
(A*E)
(B*F)
(C*G)
(D*H)
(I+J+K+L)
(Box P result)
(M+N)
(Box Q*5.1 ft ea. panel)
(Table A2 from box S)
(T*O)
(Pump to top header height)
(R+U+V+W)
(X*0.43)
(total pipe length used)
Box Y
(Losses for filter, heater, etc.)
Table 2: Head Loss at Flow Rates in 2" PVC
Flow Rate (GPM) Head Loss/ft Piping (ft) Flow Rate (GPM) Head Loss/ft Piping (ft)
0
0.000
45
0.036
4.5
0.000
5
50
0.043
8
0.001
55
0.053
10
0.002
60
0.060
15
0.004
65
0.070
20
0.008
70
0.079
25
0.010
75
0.091
30
0.017
80
0.102
35
0.018
85
0.114
40
0.028
90
0.126
2”
PVC Acceptable for Flow Rate
2”
PVC Not Recommended for Flow Rate
