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Project
Contact
Person in charge
Date
SPREADSHEET 1 WATER PUMPING
CALCULATE THE WATER PUMPING LOAD
Values in green shaded cells are necessary to complete all calculations.
1
Water volume is in liters. Head and distances are in meters.
Water required per day (l/day)
2
3 Peak sun (h/day)
=
/ 4
5 Static level (m)
+
6
+
7 Static lift (m)
Drawdown lift (m)
+
8 Discharge head (m)
+
9 Static Head (m)
=
Pump type Surface centrifugal Surface centrifugal Submersible centrifugal single step Submersible centrifugal multiple step Positive displacement Positive displacement. Jack.
13 1
Water required per day (l/day)
12 X
8
12 Static head (m)
+
Total dynamic head (m)
=
Make Model Pump type Motor type Input voltage (ac/dc)
25% 15% 25% 35% 35% 45% Total dynamic head (m)
11 Friction head (m)
WATER PUMP AND MOTOR INFORMATION
Efficiency
14
10
=
X
Before you fill cell 14 find the water pump appropriate for your project. Consult munufacturer's pump literature to determine pumping efficiency. If pumping efficiency cannot be determined from the manufacturer's literatue use the following guide: TDH 5m 20 m 20 m 20 to 100 m 50 to 100 m 100 or more
Allowance for friction (decimal)
Pumping rate (l/h)
Pumping efficiency 15
/
Energy conversion factor (constant) 367
16
17 Hydraulic energy (Wh/day)
=
22 Amp-hour load (Ah/day) /
19 Array energy (Wh/day)
=
/
21 20
18 Pumping efficiency (decimal)
Wire loss factor (decimal) 0.95
23
=
Nominal system voltage (V)
24 2 /
Amp-hour load (Ah/day)
=
/ Adjusted amp-hour load (Ah/day)
20
25 Peak sun (h/day)
=
Preliminary project current (A)
SPREADSHEET 2 WATER PUMPING
SYSTEM PHOTOVOLTAIC ARRAY SIZE PHOTOVOLTAIC MODULE INFORMATION Make and Model
Before you fill cell 27 select your desired PV modulue. You might have to repeat this step with another module selection to mactch your needs.
Type
26 25
Vmp
Voc
Imp
Isc
27 Project current (A)
Module loss factor (decimal)
19
Nominal system voltage (V)
32
/
SPREADSHEET 3 WATER PUMPING 39 30
Derated project current (A)
=
/ 31
28
.
Rated 33 Number of 34 Number of 35 Total 36 PV module PV modules PV modules number of voltage Vmp in series in parallel PV modules (V) 30 29 = X = X
29
Rated PV module current Imp (A)
37
Module loss factor (decimal)
46
Number of PV modules in parallel (int. num.)
=
/ Rated PV module current Imp (A)
30
Rated 38 PV module voltage Vmp 32 (V) X =
PV array wattage (W)
PUMPED WATER AND PUMPING RATE Number of PV modules in parallel
40 29 X
Rated PV module current Imp (A)
41 19 X
Nominal system voltage (V)
42 17 X
43 Pumping efficiency (decimal)
15 X
Energy conversion factor (constant) 367
44 2 X
45 Peak sun (h/day)
27 X 48
Compare the pumping rate value of cell 51 with the capacity of your water source. Do not exceed the capacity of the water source. 47
