Pump System Sizing & Layout Diagrams; Pump System Sizing - Lorentz PS Série Manuel D'installation Et De Fonctionnement

12 Pump System Sizing & Layout Diagrams
6 Pump System Sizing & Layout Diagrams

6.1 Pump System Sizing

To professionally size and install a water pumping system,
depending on the pump type and application various
variables need to be taken into consideration:
Static head - Vertical height from the dynamic water level
to the highest point of water delivery.
Suction head - Vertical height from the water level to the
pump inlet where the water level is below the pump inlet.
Pressure losses - Loss of water pressure due to pipe
length and friction caused by pipe material and additional
pipe line elements like elbows, valves.
For solar water pumping additionally local irradiation
levels are necessary to calculate the available power during
each day and the effect on water output.
To easily manage and consider the different variables,
LORENTZ strongly advises to size pump systems with
LORENTZ COMPASS, the solar pump planning software.
Figure 1: COMPASS sizing
COMPASS is the LORENTZ tool for designing,
planning and specifying solar pump systems. It
is available for download to all LORENTZ partners on
partnerNET.
COMPASS is a PC-based tool to simply specify solar
pumping systems in real time. It is based on NASA weather
data and uses precise algorithms for even the most complex
calculations.
By selecting the location from a list of more than 250,000
cities, entering the total dynamic head (TDH) and the
necessary amount of water per day the software will
automatically show suitable pump systems and the
necessary size of the PV generator.
For more complex situations COMPASS offers features from
suction head calculation to pipe type specific pressure loss
calculation.
NOTE - Always ensure the values used for
sizing with COMPASS match the conditions
on site. Incorrect parameters can lead to a
wrong sizing report.