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Solar water pumps are, for many, a more reasonable source of energy for pumping wells
than windmills. While both windmills and solar powered pumps are useful in
remote areas that are not tied to the grid, solar power is generally both less
expensive than its wind-powered counterpart, as well as easier to install.
For locations beyond the reach of power lines and with little wind, solar pumps
offer a clean and simple alternative to fuel-burning generators.
Using the principle of 'thermo dynamics' they require no batteries, no high-voltage electricity, no engine consuming gasoline or diesel fuel - only harmless, low-voltage, solar-generated electricity, eternally available and pollution free and requiring very little maintenance.
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Surface Solar Pumps
The most economical DC water pumps are surface
(non-submersible) pumps. They can reduce pumping energy consumption by half or
more, compared to conventional AC pumps. Surface pumps can pull the water up to
10 meters (suction capacity) and lift or push up to 100 meters. Solar pumps have a
wide range of applications and can provide as little as 2 liters per minute
and up to 250 liters per minute. Surface pumps must be protected from weather.
Submersible Solar Pumps
Submersible water pumps are used in well pumping up to 10 meters,
pressurized and non-pressurized irrigation, home water systems and livestock
watering. There are no limits to how large solar-powered pumping systems can be
built. But, they tend to be most competitive in small installations where
combustion engines are least economical. Windmills
Windmills can provide an economic way of providing water for many areas. they require no electricity, little to no maintenance and are easy and cheaply repaired. Windmills do require a constant wind. They can pump from a depth of 135 meters.
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of products.
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