26
SOLAR PUMPING
Guidelines - Electrical design and installation
of solar pumps
B/
SIZING,
INSTALLATION
COMMISSIONING
AND USER TRAINING
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27
SOLAR PUMPING
Guidelines - Electrical design and installation of solar pumps
B/
SIZIN
G
, INS
TALL
A
TION C
OMMISSIONIN
G AND USER TRAININ
G
28
SOLAR PUMPING
Guidelines - Electrical design and installation of solar pumps
As explained in the introduction and in the «main components» chapter, this document is
not meant as a solar energy
technical training. The recommended method is to specify to the suppliers the expected results - mainly the daily flow, and
the total head - and to let suppliers propose the ideal sizing as well as the best suited equipment.
However, it may happen that suppliers come up with very different results as to the number of solar panels and the power of
the pump to install. The calculation below only shows a sizing method to verify supplier offers. The check is done in several
steps presented below.
1. SIZING
STEP
1
ELECTRICAL ENERGY NEEDS PER DAY
The goal of solar pumping projects is to lift a certain amount of water at a certain height, every day. This requires a quantity
of mechanical energy (E2). To calculate the electrical energy to be supplied to the motor pump (E1), it is necessary to take
into account the pumps performance, which varies according to each type of pump. If the efficiency of the pump is unknown,
the following reference values will be used:
Dostları ilə paylaş: 
