Understanding the margin between the flow rate of a solar pump and the well or borehole flow rate.
Alberto Llario |
What can be the margin between the water flow rate of a borehole or a well and the actual flow rate of the solar pump?
You can select a solar pump to match whichever the flow of the borehole or a well is.
One Reply to "Understanding the margin between the flow rate of a solar pump and the well or borehole flow rate."
A borehole has what is called a “tested yield” that is, a point at which the rate of pumping out of the borehole remains constant even with continued pumping. This is also the point at which the level of the water in the borehole does not change with continued pumping, and this is recorded as the “dynamic water level” of the borehole (also known as pumping water level). This point is determined during the pumping and yield tests, at the time the borehole was drilled. However, design yield (referred to as “safe yield” of the borehole and which leads to pump selection, should be always between 60% and 70% of the tested yield. This is to ensure that the pump does not affect the integrity of the borehole.