Acoustic cooling

We have experience researching novel acoustic cooling technologies and have patent applied for 2 novel concepts. In most cases, we were dealing with miniature cooling systems that may have applications in small portable devices like mobile phones etc.

Many current acoustic cooling solutions focus on methods of moving air in a linear direction. Our thought process is different, leading to many novel solutions – please ask for more information as we do not advertise many details publicly.

We have researched a number of novel approaches;

(1) Elimination of the boundary layer.

Laser sheet imaging showing air moving past an object

Laser sheet imaging showing air moving past an object

We were able to demonstrate experimentally that air moving over a rough surface created a boundary layer that prevented the air from absorbing heat from a rough surface. This is not that surprising since the negative effects of boundary layer creation are well known.

When applying our acoustic solution, we were able to create airflow into small features of the rough surface that was previously inaccessible to the airflow. We were able to effectively eliminate the boundary layer using acoustic sound waves (in this application, the boundary layer was created by ambient airflow – convection). This cooling was more effective than using forced air cooling. In essence the acoustic solution was more effective than a miniature fan.

(2) Air pump using a varying pressure gradient created by an acoustic standing wave.

We were able to convert high intensity noise into an assembly where the sound could be used to cool a system. This has a number of applications in relation to cooling aerospace propulsion systems or automotive systems. It is also a method where noise generated by these systems could potentially be reduced while taking wasted energy and using it to enhance cooling.

(3) Other proprietary cooling solutions.

We also have a number of other proprietary acoustic cooling solutions. Please inquire for more information.