What You Need To Know Before Installing Your borehole

What you should know or consider when installing a Borehole is firstly know the recharge rate of your borehole, type of casings installed and it’s important to understand the type of pump install in getting the most value out of your borehole.


Drillforce offers a wide range of service such as site survey, installation of AC and DC, drip irrigationa and more, Borehole drilling and Installation our specialty since the day one its been years we have been offering our service to help both domestic and commercial

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What You Need To Know Before Installing Your borehole
What You Need To Know Before Installing Your borehole


BOREHOLE RECHARGE RATE

Bear in mind that the depth of the water is an average measurement. The water level in a borehole will drop as it is pumped out of the borehole, and rise as it is recharged (more on borehole recharge here). The borehole’s recharge rate should also be considered when selecting a pump, particularly where the application involves dewatering.

TOTAL DYNAMIC HEAD

The pump installer or contractor will need to calculate the Total Dynamic Head (TDH) of your installation, which will also help to determine which pump to select. TDH considers the above ground elevation, pipe diameter, pipe length, standing water level and drawdown level. You can find more details about TDH here, but for our purposes, you should check that the person selecting your pump has considered the TDH and has taken this into account when making the final selection.

PIPE DIAMETER

Sizing of the pipes in the installation is also very important to achieve good results from your borehole. A small pipe diameter will create more friction than a larger-diameter pipe, so more pressure and hence more kilowatts will be required to account for the friction loss.

HORIZONTAL DISTANCE

Once the water has been pumped vertically from below the ground to above the ground, it needs to be taken to its final endpoint. The further away this endpoint is from the top of the borehole, the more pressure is required.

GROUND ELEVATION

If there is a difference in height between the top of the borehole and the water’s endpoint (the ground elevation), then this should also be factored into the pump selection process, as it will require additional energy from the pump.

BOREHOLE DIAMETER

Each borehole will be drilled to a specific diameter. The diameter of the borehole will dictate the diameter of the submersible pump that will need to be used in the borehole. Here, you’ll have to do a bit of a cost balancing act, because a pump with a small diameter will generally need to have more stages or impellers than a pump with a larger diameter to achieve the same output.

GET THE BEST RETURN ON INVESTMENT!

Bear in mind that pumps have limits to what they can do. If the range of duties is small, selection becomes much easier; but if there are many duties to cover, you may find yourself having to make some compromises. However, if the above factors are considered, then you have the best chance of selecting a pump that will give you the best return on your borehole investment.
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