25-08-2017, 09:32 PM
Drinking Water – Water Supply for Small Communities
Drinking Water.pdf (Size: 645.74 KB / Downloads: 44)
Introduction
In many parts of the globe, clean water for drinking and personal hygiene is a very limited resource. The
availability of clean and save water is the basis of a secured, sustainable development of remote communities
and also plays a major role in many small, especially food-related industries.
Where it is lacking, it deprives people of the opportunity to realise their full personal and economic potential.
Very often dirty and insufficient water results in decreased health status and is the reason for the spreading of
many diseases. Particular babies and children suffer from water shortage and bad water quality – very often
their personal development is hampered with permanent effect.
Pumps are used to lift and transport the water to where it is needed – sometimes over substantial distances.
Earlier wind and hands pumps were used, but their applications are very limited and not reliable. They cannot
be transported easily and need regular maintenance of the mechanical parts. Later diesel-operated pumps
came into use, but their popularity is in decline due to rising fuel prices, the cost of spare parts for
maintenance, the need to transport fuel to the system’s location and the noise and pollution they cause.
Since the 90s solar pumps have been developed and reached technological maturity. They are successfully
tested and used for many years in various parts of the world. Despite their higher initial cost, solar-operated
pumps are an economical alternative to the widely used diesel-operated pumps. The breakeven point is
usually reached after 2-4 years only.
Especially solar-operated submersible pumps have proven to be the solution for remote areas with no
connection to the electrical grid. The electric energy is produced by a set of PV modules during daytime. This
renewable, cost-free energy powers the submersible pump which is controlled and optimized by a pump
controller on top of the well. With a battery system attached, the pump can also run at night and provide
electricity for some small lamps, a radio and a telephone charger by the side. The whole system operates
automatically. It is protected by a tank float switch as well as a low water well probe.
LORENTZ Solar Pumps
All LORENTZ solar pump systems are designed to serve your need for a stable water supply in remote and
rural areas. Motors and pump ends are made for operation far away from streets and roads, where experts
are not available for setup and frequent service. LORENTZ provides rough and reliable tools with a high life
expectancy that are easy to install and need no maintenance.
LORENTZ solar pumps are highly efficient and especially constructed for solar operation – they work as long
as there is some daylight, also on cloudy days. They do not need full sun shine. Rather than stopping, they
still provide water at a reduced flow rate. Pumping time is approximately 8h per day or more, depending on
season and latitude of the system location.