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Technology DEMO Video |
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Electrostatic sprayers apply solutions more effectively than conventional
sprayers by applying electrical charge to liquid droplets as they are
sprayed through
a nozzle. The charge causes droplets to wrap around objects, and even overcome
gravity, resulting in thorough, even coverage of the target. Tests have shown
ESS sprayers achieve 4 to 10 times better coverage than conventional sprayers.
The process by which ESS sprayers apply the charge is called induction
charging. Induction charging can produce a very high charge without
using high voltages. Other types of charging methods, such as contact
charging, use voltages that are much too high to be safe for many
applications.
As the spray is atomized the droplets pass an electrode inside of the nozzle.
Electrons are induced onto the droplets and they leave the nozzle with a high
negative charge.
The droplets are carried in an air stream towards the target. The closer the
charged droplets get to the target, the stronger the electrostatic forces of
attraction.
Charged droplets can travel long distances without losing their charge. The droplets
follow electrical field lines of force and wrap around the target. Once droplets
hit the target they immediately lose the electrical charge.
The force of electrostatic attraction is strong if the droplets are small and
the droplet charge is sufficiently high. ESS sprayers produce highly charged
spray droplets using a unique embedded induction electrode design. The result
is the droplets have a force of attraction of 75 times that of gravity. This
means droplets will reverse direction and move upwards, against gravity, to coat
hidden surfaces.
ESS nozzles are designed to allow many different types of solutions to be sprayed
through them, including heavy powders mixed in all types of liquids. The nozzle
is easy to disassemble for cleaning.
ESS is the world leader in applying electrostatic technology for use in agriculture.
The image below shows how ESS sprayers coat the entire surface of plants, making
pesticides and fertilizers much more effective.
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