How much flow does the solar water pump have

How does a solar water pump work?

Solar water pumps are designed to provide a flow of water (GPM) for a given pressure or lift (head). Pump "head" is measured in feet, and represents the total lift the pump can raise water from a low point to a high point. Sometimes head is expressed as (PSI), and 1ft of head=0.433PSI.

How do I determine the size of a solar water pump?

To determine the size of the solar water pump you require, carry out the following: Minimum pumping flow: Calculate the minimum pumping flow from your daily water needs. Total dynamic head: Calculate the total dynamic head from the depth of the well and the distance from the water source to your storage cistern or house.

How to choose a solar water pump?

Solar water pumps are specially designed to work at variable power. You’ll have to look at their performance chart showing the water flow in the pump power and the dynamic head function. With this configuration, you’ll have to look for a solar pump with a minimum flow rate of 0.83 gal/min and a dynamic head of 70.14ft. Solar water pump flow chart.

How much power does a solar water pump need?

Solar water pump flow chart. In this example, the 12V DC water pump meets the water supply requirements (70ft, 0.83 gal/min) with a power of only 24W (2.0Ampsx12V=24W). What size solar system does your water pump need?

How many GPM does a solar water pump provide?

The pump curves are published by pump manufactures. In the examples above, based on the piping system described, the three pumps will provide 2.75, 3.3, and 4.1 GPM respectively. Power to the pump: Every solar water pump can produce a range of flows and pressures.

Does a solar water pump produce a lot of water?

Solar panels are variable power generators — their power output varies throughout the day and year. Consequently, a solar water pump’s water production also varies. This can become problematic as your water needs are relatively stable, though there is often an increase during the summer months.