Thursday, July 20, 2006

Some Facts About Solar Powered Water Pumps

Solar powered water pumps are similar to traditional pumps in the exception that they generate electricity by themselves through high quality solar panels. Energy stored from the sun and converted into energy is transfered as a DC (direct current) power supply. As solar panels naturally produce DC electricity, solar water pumps must be compatible to DC power in order to run properly. Most open water source solar water pumps (such as submersible floating pumps) that are used in ponds, springs, and streams naturally used DC power as an energy source. However, most wells use a centrifugal water pump that uses AC power. In that case, DC power create by the solar panels must be transformed into AC power through an inverter adapter. Becuase this adds to the complexity and expense of the solar water pump, most of them use a DC electricity as a power supply.

On a different note, you'll be happy to know that solar powered water pumps also work when it's cloudy. Even though efficiency is diminished, they still will provide power for many hours. However, when purchasing a solar water pump, make sure that it has sufficient capacity to store energy from sunny days for at least three to five days worth of excess energy.