Til innholdet

Ultrasonic antifouling

Ultrasonic antifouling is meant to reduce fouling on underwater structures, through using small-scale acoustic cavitation to destroy and discourage attachment of algae and other single-celled organisms.

Principle

Ultrasonic antifouling is based on destroying the micro fouling at the cellular level. By rupturing the cell walls of the organisms the system is supposed to prevent the basic elements of fouling from attaching to the hull.

Basically, the system generates gas bubbles in water. When the bubbles collapse, the local pressure prevents marine growth.

Main components

POWER CONTROL: Provides specific low powered ultrasonic frequencies.
TRANSDUCERS: Emitting the ultrasonic waves.

Methods

HARD CAVITATION: High intensity (>50 W). High and local pressure.
SOFT CAVITATION: Lower intensity. Generates conditions which prevent marine growth.

copper based MGPS/ICAF systems contributes significantly to corrosion protection

Box cooler safety risk

How well does it work?

Perhaps you have seen the adds, where the ultrasonic maker claims this scientifically named system contains a breakthrough combination of ultrasonic waves and multiple frequencies. Some also argue that the waves result in a micro jet action creating a cleaning effect on the hulls surface below the waterline.

Well, ultrasonic treatment is a well proven technique for antifouling and cleaning for certain industrial applications. The challenge of avoiding marin fouling is, however, very complex. To our experience, ultrasonic systems are not yet proven to be sufficiently efficient in sea chests and on box coolers, at least when installed singularly, with no support from other active systems. The best effect comes in conjunction with electrolytic copper based antifouling systems.

How can we assist you?

We encourage ship owners to take part in testing projects in a quest to optimising ultrasonic systems for future application. Let us know if you would like us to provide ultrasonic systems with the intention of testing, tuning and achieving the desired antifouling effect on one of your vessels.

Certifications