Exhaust Fan Noise Reduction

But even if you don t exhaust noise can still be quite unpleasant.

Exhaust fan noise reduction. Causes of fan noise. An open fan inlet or outlet is a common culprit behind excessive noise levels. Fan noise is roughly proportional to the 5th power of fan speed. To check the exact noise level your fan is producing use a db meter and place it in front of the air flow once the inline fan is on.

It can be especially annoying if you have a race car that could easily claim the top spot in the next need for speed game. Loud exhaust noise is common in cars that have powerful engines. We received the rushlight noise abatement award for innovation in environmental noise control by applying our noise reduction technology to three 4mw industrial fans at a tata steel works as well as eliminating a long running environmental noise problem tata also reduced its capital costs 800 000 and running costs c 200k. The following table provides a guide to the trade off that can be expected.

There are other factors and solutions to consider but we will address those in future posts. Having said that there are a few ways you can reduce exhaust noise to a significant degree. Applications in the field of ventilation refrigeration and air conditioning technology have an additional option regarding noise reduction with the help of another passive component. Usually when the noise level crosses 75 db we take it as too loud to tolerate.

If you find the score anything between 70 85 db you need to read the rest of the article carefully. Fan silencer for industrial fan noise reduction. Fan noise reduced by 99 and costs by 80 using new technology. An inlet and or outlet silencer can adequately reduce the noise levels for many of these applications.

Noise emanating from ventilation fans is a function of many variables and causes for example. 1 vortex shedding this is a broad band noise source generated by air separation from the blade surface and trailing edge. The problem was solved by fitting a simple fan noise suppression solution to the intake of the existing ducting. Noise reduction solutions for all types of industrial fans.

A cardboard trim waste extract fan was exposing nearby workers to 89 dba. So in many cases it is possible to achieve a large noise reduction from a small drop in fan speed by changing control systems or pulley sizes and re setting dampers. This silencing method achieved an 8 dba fan noise reduction lowering workers noise levels to 81 dba for very low cost. Waste trim fan noise control.

This time the component works on the exhaust side of the fan and is restricted to use on axial fans. We have successfully achieved high noise reductions on many exhaust fans and other types of industrial fan. Exhaust fan noise reduction.