http://www.onislam.net/english/health-and-science/news/488731-solar-pump-revolutionizes-eritrea.html
Solar Pump Revolutionizes Eritrea
By PollutionSolutions-online.com:
A farming community in Africa is now able to irrigate its crops on a
reliable year-round basis, thanks to a solar pumping solution from NOV Mono.
The Sun-Sub submersible pump system is located on the banks of the Mereb
River in the East African Muslim country of Eritrea, where the community
now has greatly improved access to water.
Working with the team at Visual Direct International, a leading provider
of energy management products and systems, the Mono Sun-Sub pumping
system was fitted with a stationary array.
This enables it to draw some 100m^3 of water per day from the 7.3m deep
well, and pump it over 228 meters to a concrete surface reservoir.
This can hold up to 4 days' supply, ensuring that the farmers always
have water to irrigate their citrus trees. The Sun-Sub can operate at
speeds of 1800-2400 revolutions per minute (rpm), and is powered by
2,400W of solar panels.
"Severe shortages of diesel, and very high prices, mean that
conventional pumps are often not an option for irrigation water duties
in places like Eritrea," says Mono's Maurice Calderon.
"However, Mono has a very successful track record of providing solar
pumps for this type of application. We help farmers cut their costs, and
make a reliable source of water a practical and affordable option. This
helps them increase production and also generate new sources of income
by planting new crops that were not previously viable."
Mono's Sun-Sub submersible pump uses simple, proven technology, and so
can be relied on to deliver every time.
Available with either a stationary or GPS tracking array, and with power
options ranging from 150 Watts up to 2400 Watts, it can produce very
high flows and discharge pressures.
It requires no external diesel or electrical power supply, and can
easily be configured for automatic operation by the use of float
switches, a pressure kit or a built-in electronic control.
This allows the Sun-Sub to turn on when water is required, and then turn
off once any storage vessels are full, thereby conserving water and
reducing wear on the pump.
The Sun-Sub's progressing cavity pump provides maximum water output,
even in bores containing silt or iron oxide.
It delivers water with every rotation, while its low speed capability
extends rotor and stator life in abrasive bores
All Sun-Sub systems are supplied complete with pre-wired solar modules,
array frames, pump element, submersible motor and solar motor controller.
This makes them easy to assemble and install, and with all electrical
plugs and sockets pre-fitted, no specialist electrical knowledge is
required.
Received on Fri Jul 03 2015 - 09:14:51 EDT